./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.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_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/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 30b2ae2bbbfcb385de0df7e20f17282d477a17c8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:05:00,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:05:00,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:05:00,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:05:00,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:05:00,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:05:00,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:05:00,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:05:00,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:05:00,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:05:00,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:05:00,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:05:00,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:05:00,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:05:00,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:05:00,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:05:00,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:05:00,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:05:00,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:05:00,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:05:00,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:05:00,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:05:00,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:05:00,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:05:00,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:05:00,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:05:00,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:05:00,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:05:00,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:05:00,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:05:00,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:05:00,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:05:00,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:05:00,197 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:05:00,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:05:00,198 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:05:00,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:05:00,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:05:00,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:05:00,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:05:00,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:05:00,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 14:05:00,209 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:05:00,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:05:00,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 14:05:00,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 14:05:00,210 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 14:05:00,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:05:00,210 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:05:00,211 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:05:00,212 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:05:00,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:05:00,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:05:00,212 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 14:05:00,212 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:05:00,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:05:00,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:05:00,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:05:00,213 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:05:00,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:05:00,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 14:05:00,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:05:00,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:05:00,213 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:05:00,213 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_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/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 -> 30b2ae2bbbfcb385de0df7e20f17282d477a17c8 [2019-12-07 14:05:00,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:05:00,318 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:05:00,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:05:00,321 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:05:00,321 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:05:00,322 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/peterson.i [2019-12-07 14:05:00,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/data/2cf96fd5c/09bcff4e92b74580ae6291a526f629a3/FLAGf3b04343b [2019-12-07 14:05:00,708 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:05:00,709 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/sv-benchmarks/c/pthread-atomic/peterson.i [2019-12-07 14:05:00,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/data/2cf96fd5c/09bcff4e92b74580ae6291a526f629a3/FLAGf3b04343b [2019-12-07 14:05:00,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/data/2cf96fd5c/09bcff4e92b74580ae6291a526f629a3 [2019-12-07 14:05:00,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:05:00,730 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:05:00,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:05:00,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:05:00,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:05:00,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:05:00" (1/1) ... [2019-12-07 14:05:00,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bf35b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:00, skipping insertion in model container [2019-12-07 14:05:00,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:05:00" (1/1) ... [2019-12-07 14:05:00,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:05:00,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:05:00,990 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:05:00,997 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:05:01,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:05:01,072 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:05:01,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01 WrapperNode [2019-12-07 14:05:01,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:05:01,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:05:01,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:05:01,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:05:01,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:05:01,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:05:01,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:05:01,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:05:01,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... [2019-12-07 14:05:01,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:05:01,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:05:01,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:05:01,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:05:01,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/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 14:05:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 14:05:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-12-07 14:05:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-12-07 14:05:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-12-07 14:05:01,170 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-12-07 14:05:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 14:05:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 14:05:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 14:05:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:05:01,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:05:01,172 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 14:05:01,363 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:05:01,363 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 14:05:01,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:05:01 BoogieIcfgContainer [2019-12-07 14:05:01,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:05:01,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:05:01,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:05:01,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:05:01,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:05:00" (1/3) ... [2019-12-07 14:05:01,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e33916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:05:01, skipping insertion in model container [2019-12-07 14:05:01,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:05:01" (2/3) ... [2019-12-07 14:05:01,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e33916 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:05:01, skipping insertion in model container [2019-12-07 14:05:01,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:05:01" (3/3) ... [2019-12-07 14:05:01,369 INFO L109 eAbstractionObserver]: Analyzing ICFG peterson.i [2019-12-07 14:05:01,375 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 14:05:01,375 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:05:01,380 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-12-07 14:05:01,380 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 14:05:01,396 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,397 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,397 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,397 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,397 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,398 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,398 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,398 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,398 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,398 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,399 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,399 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 14:05:01,417 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 14:05:01,431 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:05:01,431 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:05:01,431 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:05:01,431 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:05:01,431 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:05:01,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:05:01,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:05:01,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:05:01,440 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 61 places, 62 transitions [2019-12-07 14:05:01,441 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions [2019-12-07 14:05:01,468 INFO L134 PetriNetUnfolder]: 7/62 cut-off events. [2019-12-07 14:05:01,468 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 14:05:01,472 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs. 19/73 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2019-12-07 14:05:01,474 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 61 places, 62 transitions [2019-12-07 14:05:01,484 INFO L134 PetriNetUnfolder]: 7/62 cut-off events. [2019-12-07 14:05:01,485 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 14:05:01,485 INFO L76 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 62 events. 7/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 91 event pairs. 19/73 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2019-12-07 14:05:01,487 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 756 [2019-12-07 14:05:01,487 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 14:05:02,029 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1396 [2019-12-07 14:05:02,029 INFO L214 etLargeBlockEncoding]: Total number of compositions: 33 [2019-12-07 14:05:02,032 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 34 transitions [2019-12-07 14:05:02,049 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 197 states. [2019-12-07 14:05:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2019-12-07 14:05:02,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:05:02,056 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:05:02,057 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:05:02,057 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:05:02,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:05:02,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1379963486, now seen corresponding path program 1 times [2019-12-07 14:05:02,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:05:02,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407815458] [2019-12-07 14:05:02,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:05:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:05:02,168 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 14:05:02,169 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407815458] [2019-12-07 14:05:02,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:05:02,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:05:02,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612364465] [2019-12-07 14:05:02,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 14:05:02,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:05:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 14:05:02,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:05:02,185 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2019-12-07 14:05:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:05:02,201 INFO L93 Difference]: Finished difference Result 197 states and 454 transitions. [2019-12-07 14:05:02,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 14:05:02,202 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 14:05:02,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:05:02,211 INFO L225 Difference]: With dead ends: 197 [2019-12-07 14:05:02,212 INFO L226 Difference]: Without dead ends: 174 [2019-12-07 14:05:02,212 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 14:05:02,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2019-12-07 14:05:02,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2019-12-07 14:05:02,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-12-07 14:05:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 406 transitions. [2019-12-07 14:05:02,250 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 406 transitions. Word has length 6 [2019-12-07 14:05:02,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:05:02,251 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 406 transitions. [2019-12-07 14:05:02,251 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 14:05:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 406 transitions. [2019-12-07 14:05:02,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 14:05:02,251 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:05:02,252 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:05:02,252 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:05:02,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:05:02,252 INFO L82 PathProgramCache]: Analyzing trace with hash 170777462, now seen corresponding path program 1 times [2019-12-07 14:05:02,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:05:02,252 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249151378] [2019-12-07 14:05:02,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:05:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:05:02,291 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 14:05:02,291 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249151378] [2019-12-07 14:05:02,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:05:02,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:05:02,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735302647] [2019-12-07 14:05:02,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:05:02,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:05:02,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:05:02,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:05:02,293 INFO L87 Difference]: Start difference. First operand 174 states and 406 transitions. Second operand 3 states. [2019-12-07 14:05:02,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:05:02,316 INFO L93 Difference]: Finished difference Result 189 states and 416 transitions. [2019-12-07 14:05:02,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:05:02,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-12-07 14:05:02,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:05:02,318 INFO L225 Difference]: With dead ends: 189 [2019-12-07 14:05:02,318 INFO L226 Difference]: Without dead ends: 154 [2019-12-07 14:05:02,318 INFO L630 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 [2019-12-07 14:05:02,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-12-07 14:05:02,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 140. [2019-12-07 14:05:02,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-12-07 14:05:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 317 transitions. [2019-12-07 14:05:02,334 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 317 transitions. Word has length 7 [2019-12-07 14:05:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:05:02,334 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 317 transitions. [2019-12-07 14:05:02,334 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:05:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 317 transitions. [2019-12-07 14:05:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 14:05:02,335 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:05:02,336 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:05:02,336 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:05:02,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:05:02,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1618546552, now seen corresponding path program 1 times [2019-12-07 14:05:02,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:05:02,337 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114979046] [2019-12-07 14:05:02,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:05:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:05:02,369 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 14:05:02,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114979046] [2019-12-07 14:05:02,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:05:02,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:05:02,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750299580] [2019-12-07 14:05:02,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:05:02,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:05:02,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:05:02,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:05:02,371 INFO L87 Difference]: Start difference. First operand 140 states and 317 transitions. Second operand 3 states. [2019-12-07 14:05:02,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:05:02,384 INFO L93 Difference]: Finished difference Result 135 states and 290 transitions. [2019-12-07 14:05:02,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:05:02,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 14:05:02,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:05:02,385 INFO L225 Difference]: With dead ends: 135 [2019-12-07 14:05:02,385 INFO L226 Difference]: Without dead ends: 96 [2019-12-07 14:05:02,385 INFO L630 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 [2019-12-07 14:05:02,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-12-07 14:05:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2019-12-07 14:05:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 14:05:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 204 transitions. [2019-12-07 14:05:02,391 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 204 transitions. Word has length 9 [2019-12-07 14:05:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:05:02,392 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 204 transitions. [2019-12-07 14:05:02,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:05:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 204 transitions. [2019-12-07 14:05:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:05:02,393 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:05:02,393 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:05:02,393 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:05:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:05:02,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1612301587, now seen corresponding path program 1 times [2019-12-07 14:05:02,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:05:02,394 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434461362] [2019-12-07 14:05:02,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:05:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:05:02,425 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 14:05:02,426 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434461362] [2019-12-07 14:05:02,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:05:02,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:05:02,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881840903] [2019-12-07 14:05:02,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:05:02,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:05:02,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:05:02,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:05:02,427 INFO L87 Difference]: Start difference. First operand 96 states and 204 transitions. Second operand 4 states. [2019-12-07 14:05:02,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:05:02,445 INFO L93 Difference]: Finished difference Result 106 states and 227 transitions. [2019-12-07 14:05:02,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:05:02,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 14:05:02,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:05:02,446 INFO L225 Difference]: With dead ends: 106 [2019-12-07 14:05:02,446 INFO L226 Difference]: Without dead ends: 82 [2019-12-07 14:05:02,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 14:05:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-12-07 14:05:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-12-07 14:05:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-12-07 14:05:02,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 160 transitions. [2019-12-07 14:05:02,451 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 160 transitions. Word has length 13 [2019-12-07 14:05:02,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:05:02,451 INFO L462 AbstractCegarLoop]: Abstraction has 82 states and 160 transitions. [2019-12-07 14:05:02,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:05:02,451 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 160 transitions. [2019-12-07 14:05:02,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:05:02,452 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:05:02,452 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:05:02,452 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 14:05:02,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:05:02,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1894970123, now seen corresponding path program 2 times [2019-12-07 14:05:02,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 14:05:02,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644324074] [2019-12-07 14:05:02,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:05:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:05:02,478 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 14:05:02,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644324074] [2019-12-07 14:05:02,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:05:02,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:05:02,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541330698] [2019-12-07 14:05:02,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:05:02,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 14:05:02,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:05:02,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:05:02,480 INFO L87 Difference]: Start difference. First operand 82 states and 160 transitions. Second operand 4 states. [2019-12-07 14:05:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:05:02,489 INFO L93 Difference]: Finished difference Result 36 states and 77 transitions. [2019-12-07 14:05:02,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:05:02,489 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 14:05:02,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:05:02,489 INFO L225 Difference]: With dead ends: 36 [2019-12-07 14:05:02,490 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:05:02,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 14:05:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:05:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:05:02,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:05:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:05:02,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-12-07 14:05:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:05:02,491 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:05:02,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:05:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:05:02,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:05:02,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:05:02 BasicIcfg [2019-12-07 14:05:02,493 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:05:02,494 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:05:02,494 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:05:02,494 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:05:02,495 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:05:01" (3/4) ... [2019-12-07 14:05:02,497 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:05:02,503 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-12-07 14:05:02,503 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-12-07 14:05:02,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 14:05:02,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 14:05:02,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 14:05:02,535 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b8df0ec7-fb86-4d6f-a485-37e0c6a783e8/bin/uautomizer/witness.graphml [2019-12-07 14:05:02,535 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:05:02,537 INFO L168 Benchmark]: Toolchain (without parser) took 1806.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 933.9 MB in the beginning and 860.4 MB in the end (delta: 73.5 MB). Peak memory consumption was 169.5 MB. Max. memory is 11.5 GB. [2019-12-07 14:05:02,538 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:05:02,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -133.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 14:05:02,539 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.41 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:05:02,539 INFO L168 Benchmark]: Boogie Preprocessor took 19.46 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 14:05:02,540 INFO L168 Benchmark]: RCFGBuilder took 242.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 14:05:02,540 INFO L168 Benchmark]: TraceAbstraction took 1128.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 860.4 MB in the end (delta: 180.1 MB). Peak memory consumption was 180.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:05:02,541 INFO L168 Benchmark]: Witness Printer took 41.83 ms. Allocated memory is still 1.1 GB. Free memory is still 860.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 14:05:02,544 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.9 MB). Free memory was 933.9 MB in the beginning and 1.1 GB in the end (delta: -133.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.41 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.46 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 242.17 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1128.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 860.4 MB in the end (delta: 180.1 MB). Peak memory consumption was 180.1 MB. Max. memory is 11.5 GB. * Witness Printer took 41.83 ms. Allocated memory is still 1.1 GB. Free memory is still 860.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.5s, 61 ProgramPointsBefore, 33 ProgramPointsAfterwards, 62 TransitionsBefore, 34 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 11 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 330 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1396 CheckedPairsTotal, 33 TotalNumberOfCompositions - PositiveResult [Line: 690]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 681]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 55 locations, 2 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 139 SDtfs, 60 SDslu, 60 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred 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, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 801 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...