./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 129ce07aaaf72d43feda4e85ee0279cc31551c1d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 10:40:54,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 10:40:54,981 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 10:40:54,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 10:40:54,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 10:40:54,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 10:40:54,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 10:40:54,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 10:40:54,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 10:40:54,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 10:40:54,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 10:40:54,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 10:40:54,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 10:40:54,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 10:40:54,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 10:40:54,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 10:40:54,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 10:40:54,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 10:40:54,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 10:40:55,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 10:40:55,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 10:40:55,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 10:40:55,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 10:40:55,004 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 10:40:55,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 10:40:55,006 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 10:40:55,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 10:40:55,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 10:40:55,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 10:40:55,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 10:40:55,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 10:40:55,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 10:40:55,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 10:40:55,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 10:40:55,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 10:40:55,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 10:40:55,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 10:40:55,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 10:40:55,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 10:40:55,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 10:40:55,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 10:40:55,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 10:40:55,021 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 10:40:55,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 10:40:55,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 10:40:55,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 10:40:55,022 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 10:40:55,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 10:40:55,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 10:40:55,024 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 10:40:55,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 10:40:55,024 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 10:40:55,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 10:40:55,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 10:40:55,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 10:40:55,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 10:40:55,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 10:40:55,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 10:40:55,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 10:40:55,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 10:40:55,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 10:40:55,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 10:40:55,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 10:40:55,026 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 10:40:55,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 10:40:55,026 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer 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(__VERIFIER_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 -> 129ce07aaaf72d43feda4e85ee0279cc31551c1d [2019-12-07 10:40:55,126 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 10:40:55,136 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 10:40:55,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 10:40:55,140 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 10:40:55,141 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 10:40:55,141 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2019-12-07 10:40:55,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/data/f43a9400c/4070eaaf98e143c0a0e3953300a2e6d2/FLAG1ffcc0a87 [2019-12-07 10:40:55,598 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 10:40:55,598 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/sv-benchmarks/c/pthread-wmm/safe026_tso.oepc.i [2019-12-07 10:40:55,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/data/f43a9400c/4070eaaf98e143c0a0e3953300a2e6d2/FLAG1ffcc0a87 [2019-12-07 10:40:55,963 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/data/f43a9400c/4070eaaf98e143c0a0e3953300a2e6d2 [2019-12-07 10:40:55,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 10:40:55,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 10:40:55,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 10:40:55,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 10:40:55,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 10:40:55,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:40:55" (1/1) ... [2019-12-07 10:40:55,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee0b347 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:55, skipping insertion in model container [2019-12-07 10:40:55,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 10:40:55" (1/1) ... [2019-12-07 10:40:55,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 10:40:56,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 10:40:56,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:40:56,242 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 10:40:56,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 10:40:56,317 INFO L208 MainTranslator]: Completed translation [2019-12-07 10:40:56,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56 WrapperNode [2019-12-07 10:40:56,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 10:40:56,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 10:40:56,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 10:40:56,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 10:40:56,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 10:40:56,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 10:40:56,348 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 10:40:56,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 10:40:56,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... [2019-12-07 10:40:56,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 10:40:56,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 10:40:56,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 10:40:56,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 10:40:56,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/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 [2019-12-07 10:40:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 10:40:56,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 10:40:56,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 10:40:56,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 10:40:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 10:40:56,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 10:40:56,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 10:40:56,406 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 10:40:56,575 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 10:40:56,576 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 10:40:56,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:40:56 BoogieIcfgContainer [2019-12-07 10:40:56,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 10:40:56,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 10:40:56,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 10:40:56,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 10:40:56,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 10:40:55" (1/3) ... [2019-12-07 10:40:56,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327ae676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:40:56, skipping insertion in model container [2019-12-07 10:40:56,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 10:40:56" (2/3) ... [2019-12-07 10:40:56,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327ae676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 10:40:56, skipping insertion in model container [2019-12-07 10:40:56,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:40:56" (3/3) ... [2019-12-07 10:40:56,581 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.oepc.i [2019-12-07 10:40:56,587 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 10:40:56,587 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 10:40:56,591 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 10:40:56,592 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 10:40:56,609 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,609 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,609 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,609 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,609 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,609 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,610 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,610 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,610 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,610 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,610 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,610 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,611 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,611 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,611 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 10:40:56,625 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 10:40:56,637 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 10:40:56,637 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 10:40:56,637 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 10:40:56,637 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 10:40:56,638 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 10:40:56,638 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 10:40:56,638 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 10:40:56,638 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 10:40:56,646 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 53 transitions [2019-12-07 10:40:56,647 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 10:40:56,672 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 10:40:56,673 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:40:56,677 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 10:40:56,678 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 62 places, 53 transitions [2019-12-07 10:40:56,688 INFO L134 PetriNetUnfolder]: 1/50 cut-off events. [2019-12-07 10:40:56,688 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 10:40:56,689 INFO L76 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 1/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs. 9/57 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 10:40:56,690 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 10:40:56,691 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 10:40:57,423 INFO L206 etLargeBlockEncoding]: Checked pairs total: 489 [2019-12-07 10:40:57,423 INFO L214 etLargeBlockEncoding]: Total number of compositions: 43 [2019-12-07 10:40:57,426 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 10:40:57,433 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 10:40:57,434 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 10:40:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 10:40:57,439 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:40:57,439 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:40:57,439 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:40:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:40:57,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1221233282, now seen corresponding path program 1 times [2019-12-07 10:40:57,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:40:57,449 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130384212] [2019-12-07 10:40:57,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:40:57,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:40:57,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:40:57,610 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130384212] [2019-12-07 10:40:57,611 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:40:57,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:40:57,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617424114] [2019-12-07 10:40:57,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:40:57,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:40:57,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:40:57,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:40:57,626 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-12-07 10:40:57,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:40:57,670 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2019-12-07 10:40:57,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:40:57,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 10:40:57,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:40:57,678 INFO L225 Difference]: With dead ends: 51 [2019-12-07 10:40:57,678 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 10:40:57,679 INFO L630 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 [2019-12-07 10:40:57,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 10:40:57,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 10:40:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 10:40:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 10:40:57,705 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 10:40:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:40:57,706 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 10:40:57,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:40:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 10:40:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 10:40:57,706 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:40:57,707 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:40:57,707 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:40:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:40:57,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1892083571, now seen corresponding path program 1 times [2019-12-07 10:40:57,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:40:57,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299813665] [2019-12-07 10:40:57,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:40:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:40:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:40:57,786 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299813665] [2019-12-07 10:40:57,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:40:57,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:40:57,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331648996] [2019-12-07 10:40:57,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:40:57,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:40:57,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:40:57,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:40:57,788 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 4 states. [2019-12-07 10:40:57,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:40:57,799 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2019-12-07 10:40:57,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:40:57,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 10:40:57,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:40:57,800 INFO L225 Difference]: With dead ends: 39 [2019-12-07 10:40:57,800 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 10:40:57,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:40:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 10:40:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-12-07 10:40:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 10:40:57,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2019-12-07 10:40:57,805 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 9 [2019-12-07 10:40:57,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:40:57,806 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2019-12-07 10:40:57,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:40:57,806 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2019-12-07 10:40:57,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 10:40:57,806 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:40:57,806 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:40:57,807 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:40:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:40:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash 796554714, now seen corresponding path program 1 times [2019-12-07 10:40:57,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:40:57,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499076245] [2019-12-07 10:40:57,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:40:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:40:57,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:40:57,864 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499076245] [2019-12-07 10:40:57,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:40:57,865 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 10:40:57,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338981329] [2019-12-07 10:40:57,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:40:57,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:40:57,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:40:57,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:40:57,865 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand 4 states. [2019-12-07 10:40:57,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:40:57,877 INFO L93 Difference]: Finished difference Result 39 states and 63 transitions. [2019-12-07 10:40:57,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:40:57,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 10:40:57,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:40:57,878 INFO L225 Difference]: With dead ends: 39 [2019-12-07 10:40:57,878 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 10:40:57,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:40:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 10:40:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2019-12-07 10:40:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 10:40:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 58 transitions. [2019-12-07 10:40:57,882 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 58 transitions. Word has length 9 [2019-12-07 10:40:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:40:57,882 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 58 transitions. [2019-12-07 10:40:57,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:40:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 58 transitions. [2019-12-07 10:40:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 10:40:57,883 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:40:57,883 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:40:57,883 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:40:57,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:40:57,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1474951325, now seen corresponding path program 1 times [2019-12-07 10:40:57,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:40:57,884 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129980816] [2019-12-07 10:40:57,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:40:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:40:57,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:40:57,952 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129980816] [2019-12-07 10:40:57,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:40:57,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 10:40:57,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450317454] [2019-12-07 10:40:57,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 10:40:57,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:40:57,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 10:40:57,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:40:57,953 INFO L87 Difference]: Start difference. First operand 34 states and 58 transitions. Second operand 6 states. [2019-12-07 10:40:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:40:57,989 INFO L93 Difference]: Finished difference Result 33 states and 54 transitions. [2019-12-07 10:40:57,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 10:40:57,989 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 10:40:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:40:57,990 INFO L225 Difference]: With dead ends: 33 [2019-12-07 10:40:57,990 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 10:40:57,990 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 10:40:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 10:40:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-12-07 10:40:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 10:40:57,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 35 transitions. [2019-12-07 10:40:57,992 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 35 transitions. Word has length 10 [2019-12-07 10:40:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:40:57,992 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 35 transitions. [2019-12-07 10:40:57,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 10:40:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 35 transitions. [2019-12-07 10:40:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:40:57,993 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:40:57,993 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:40:57,993 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:40:57,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:40:57,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1518589970, now seen corresponding path program 1 times [2019-12-07 10:40:57,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:40:57,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008486476] [2019-12-07 10:40:57,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:40:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:40:58,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:40:58,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008486476] [2019-12-07 10:40:58,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:40:58,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:40:58,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569575163] [2019-12-07 10:40:58,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 10:40:58,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:40:58,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 10:40:58,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 10:40:58,024 INFO L87 Difference]: Start difference. First operand 23 states and 35 transitions. Second operand 4 states. [2019-12-07 10:40:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:40:58,036 INFO L93 Difference]: Finished difference Result 26 states and 37 transitions. [2019-12-07 10:40:58,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:40:58,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 10:40:58,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:40:58,037 INFO L225 Difference]: With dead ends: 26 [2019-12-07 10:40:58,037 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 10:40:58,038 INFO L630 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 [2019-12-07 10:40:58,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 10:40:58,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 10:40:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 10:40:58,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-12-07 10:40:58,039 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-12-07 10:40:58,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:40:58,039 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-12-07 10:40:58,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 10:40:58,039 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-12-07 10:40:58,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 10:40:58,040 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 10:40:58,040 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 10:40:58,040 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 10:40:58,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 10:40:58,040 INFO L82 PathProgramCache]: Analyzing trace with hash 987396476, now seen corresponding path program 2 times [2019-12-07 10:40:58,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 10:40:58,041 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532168559] [2019-12-07 10:40:58,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 10:40:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 10:40:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 10:40:58,083 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532168559] [2019-12-07 10:40:58,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 10:40:58,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 10:40:58,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311692929] [2019-12-07 10:40:58,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 10:40:58,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 10:40:58,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 10:40:58,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 10:40:58,084 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 5 states. [2019-12-07 10:40:58,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 10:40:58,093 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2019-12-07 10:40:58,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 10:40:58,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 10:40:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 10:40:58,094 INFO L225 Difference]: With dead ends: 11 [2019-12-07 10:40:58,094 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 10:40:58,094 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 10:40:58,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 10:40:58,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 10:40:58,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 10:40:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 10:40:58,095 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 10:40:58,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 10:40:58,095 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 10:40:58,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 10:40:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 10:40:58,095 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 10:40:58,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:40:58 BasicIcfg [2019-12-07 10:40:58,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 10:40:58,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 10:40:58,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 10:40:58,098 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 10:40:58,098 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 10:40:56" (3/4) ... [2019-12-07 10:40:58,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 10:40:58,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 10:40:58,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 10:40:58,105 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 10:40:58,108 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 10:40:58,108 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 10:40:58,109 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 10:40:58,136 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f73ee478-05bb-4e85-bee8-ae9a1d41d1ec/bin/uautomizer/witness.graphml [2019-12-07 10:40:58,136 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 10:40:58,138 INFO L168 Benchmark]: Toolchain (without parser) took 2170.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -112.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 11.5 GB. [2019-12-07 10:40:58,138 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:40:58,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:40:58,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:40:58,139 INFO L168 Benchmark]: Boogie Preprocessor took 16.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 10:40:58,139 INFO L168 Benchmark]: RCFGBuilder took 212.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:40:58,139 INFO L168 Benchmark]: TraceAbstraction took 1520.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. [2019-12-07 10:40:58,140 INFO L168 Benchmark]: Witness Printer took 38.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 10:40:58,141 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 938.2 MB in the beginning and 1.1 GB in the end (delta: -151.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.48 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.26 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 212.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1520.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 11.5 GB. * Witness Printer took 38.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.7s, 62 ProgramPointsBefore, 21 ProgramPointsAfterwards, 53 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 1 ChoiceCompositions, 210 VarBasedMoverChecksPositive, 15 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 17 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 489 CheckedPairsTotal, 43 TotalNumberOfCompositions - PositiveResult [Line: 4]: 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, 53 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 59 SDslu, 51 SDs, 0 SdLazy, 52 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...