./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe007_tso.opt.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_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe007_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/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 4116f88163e322474a05a86cb733d0ae1b6fd487 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 18:07:45,176 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:07:45,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:07:45,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:07:45,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:07:45,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:07:45,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:07:45,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:07:45,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:07:45,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:07:45,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:07:45,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:07:45,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:07:45,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:07:45,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:07:45,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:07:45,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:07:45,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:07:45,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:07:45,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:07:45,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:07:45,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:07:45,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:07:45,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:07:45,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:07:45,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:07:45,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:07:45,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:07:45,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:07:45,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:07:45,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:07:45,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:07:45,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:07:45,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:07:45,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:07:45,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:07:45,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:07:45,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:07:45,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:07:45,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:07:45,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:07:45,209 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:07:45,218 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:07:45,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:07:45,219 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:07:45,219 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:07:45,219 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:07:45,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:07:45,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:07:45,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:07:45,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:07:45,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:07:45,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:07:45,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:07:45,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:07:45,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:07:45,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:07:45,222 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_7721d41a-8765-42c7-95e1-b0b2da38aa26/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 -> 4116f88163e322474a05a86cb733d0ae1b6fd487 [2019-12-07 18:07:45,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:07:45,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:07:45,333 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:07:45,333 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:07:45,334 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:07:45,334 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe007_tso.opt.i [2019-12-07 18:07:45,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/data/6bc400657/60fe9f96379d415d825ce51372c17d33/FLAGb1307d428 [2019-12-07 18:07:45,841 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:07:45,841 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/sv-benchmarks/c/pthread-wmm/safe007_tso.opt.i [2019-12-07 18:07:45,851 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/data/6bc400657/60fe9f96379d415d825ce51372c17d33/FLAGb1307d428 [2019-12-07 18:07:46,354 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/data/6bc400657/60fe9f96379d415d825ce51372c17d33 [2019-12-07 18:07:46,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:07:46,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:07:46,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:07:46,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:07:46,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:07:46,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dcfafaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46, skipping insertion in model container [2019-12-07 18:07:46,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:07:46,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:07:46,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:07:46,616 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:07:46,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:07:46,693 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:07:46,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46 WrapperNode [2019-12-07 18:07:46,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:07:46,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:07:46,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:07:46,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:07:46,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:07:46,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:07:46,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:07:46,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:07:46,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... [2019-12-07 18:07:46,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:07:46,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:07:46,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:07:46,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:07:46,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/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 18:07:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:07:46,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 18:07:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 18:07:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 18:07:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 18:07:46,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:07:46,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:07:46,785 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 18:07:46,958 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:07:46,958 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 18:07:46,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:07:46 BoogieIcfgContainer [2019-12-07 18:07:46,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:07:46,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:07:46,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:07:46,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:07:46,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:07:46" (1/3) ... [2019-12-07 18:07:46,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bd9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:07:46, skipping insertion in model container [2019-12-07 18:07:46,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:07:46" (2/3) ... [2019-12-07 18:07:46,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53bd9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:07:46, skipping insertion in model container [2019-12-07 18:07:46,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:07:46" (3/3) ... [2019-12-07 18:07:46,964 INFO L109 eAbstractionObserver]: Analyzing ICFG safe007_tso.opt.i [2019-12-07 18:07:46,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 18:07:46,970 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:07:46,974 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:07:46,975 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 18:07:46,992 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,992 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,992 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,992 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,992 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,993 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,994 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,994 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:46,994 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 18:07:47,008 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-12-07 18:07:47,020 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:07:47,020 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:07:47,020 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:07:47,020 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:07:47,020 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:07:47,020 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:07:47,020 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:07:47,020 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:07:47,028 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 55 transitions [2019-12-07 18:07:47,029 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 18:07:47,054 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 18:07:47,055 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:07:47,059 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:07:47,060 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 64 places, 55 transitions [2019-12-07 18:07:47,070 INFO L134 PetriNetUnfolder]: 1/52 cut-off events. [2019-12-07 18:07:47,070 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 18:07:47,071 INFO L76 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 24 event pairs. 9/59 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2019-12-07 18:07:47,072 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 450 [2019-12-07 18:07:47,072 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 18:07:47,851 INFO L206 etLargeBlockEncoding]: Checked pairs total: 467 [2019-12-07 18:07:47,851 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2019-12-07 18:07:47,854 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 15 transitions [2019-12-07 18:07:47,861 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 46 states. [2019-12-07 18:07:47,862 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-12-07 18:07:47,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 18:07:47,867 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:07:47,867 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:07:47,868 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:07:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:07:47,872 INFO L82 PathProgramCache]: Analyzing trace with hash 2019279745, now seen corresponding path program 1 times [2019-12-07 18:07:47,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:07:47,878 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532629761] [2019-12-07 18:07:47,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:07:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:07:48,043 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 18:07:48,043 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532629761] [2019-12-07 18:07:48,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:07:48,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:07:48,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216335087] [2019-12-07 18:07:48,048 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:07:48,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:07:48,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:07:48,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:07:48,059 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2019-12-07 18:07:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:07:48,103 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2019-12-07 18:07:48,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:07:48,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 18:07:48,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:07:48,114 INFO L225 Difference]: With dead ends: 51 [2019-12-07 18:07:48,114 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 18:07:48,115 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 18:07:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 18:07:48,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 18:07:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 18:07:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 68 transitions. [2019-12-07 18:07:48,140 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 68 transitions. Word has length 8 [2019-12-07 18:07:48,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:07:48,141 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 68 transitions. [2019-12-07 18:07:48,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:07:48,141 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 68 transitions. [2019-12-07 18:07:48,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 18:07:48,147 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:07:48,147 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:07:48,147 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:07:48,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:07:48,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1392638966, now seen corresponding path program 1 times [2019-12-07 18:07:48,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:07:48,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512275723] [2019-12-07 18:07:48,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:07:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:07:48,216 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 18:07:48,216 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512275723] [2019-12-07 18:07:48,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:07:48,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:07:48,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167761816] [2019-12-07 18:07:48,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:07:48,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:07:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:07:48,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:07:48,218 INFO L87 Difference]: Start difference. First operand 36 states and 68 transitions. Second operand 5 states. [2019-12-07 18:07:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:07:48,249 INFO L93 Difference]: Finished difference Result 37 states and 62 transitions. [2019-12-07 18:07:48,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:07:48,249 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-12-07 18:07:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:07:48,250 INFO L225 Difference]: With dead ends: 37 [2019-12-07 18:07:48,250 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 18:07:48,250 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:07:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 18:07:48,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 18:07:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:07:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 50 transitions. [2019-12-07 18:07:48,254 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 50 transitions. Word has length 9 [2019-12-07 18:07:48,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:07:48,254 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 50 transitions. [2019-12-07 18:07:48,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:07:48,254 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 50 transitions. [2019-12-07 18:07:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:07:48,255 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:07:48,255 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:07:48,255 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:07:48,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:07:48,255 INFO L82 PathProgramCache]: Analyzing trace with hash 222216556, now seen corresponding path program 1 times [2019-12-07 18:07:48,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:07:48,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423581231] [2019-12-07 18:07:48,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:07:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:07:48,320 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 18:07:48,320 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423581231] [2019-12-07 18:07:48,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:07:48,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:07:48,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645424887] [2019-12-07 18:07:48,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:07:48,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:07:48,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:07:48,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:07:48,322 INFO L87 Difference]: Start difference. First operand 30 states and 50 transitions. Second operand 6 states. [2019-12-07 18:07:48,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:07:48,365 INFO L93 Difference]: Finished difference Result 28 states and 44 transitions. [2019-12-07 18:07:48,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:07:48,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-12-07 18:07:48,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:07:48,367 INFO L225 Difference]: With dead ends: 28 [2019-12-07 18:07:48,367 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 18:07:48,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-12-07 18:07:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 18:07:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-12-07 18:07:48,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-12-07 18:07:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 38 transitions. [2019-12-07 18:07:48,370 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 38 transitions. Word has length 10 [2019-12-07 18:07:48,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:07:48,371 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 38 transitions. [2019-12-07 18:07:48,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:07:48,371 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 38 transitions. [2019-12-07 18:07:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:07:48,371 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:07:48,371 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:07:48,371 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:07:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:07:48,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1701132098, now seen corresponding path program 1 times [2019-12-07 18:07:48,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:07:48,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211448647] [2019-12-07 18:07:48,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:07:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:07:48,438 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 18:07:48,438 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211448647] [2019-12-07 18:07:48,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:07:48,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:07:48,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484045289] [2019-12-07 18:07:48,439 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:07:48,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:07:48,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:07:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:07:48,440 INFO L87 Difference]: Start difference. First operand 24 states and 38 transitions. Second operand 5 states. [2019-12-07 18:07:48,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:07:48,455 INFO L93 Difference]: Finished difference Result 27 states and 40 transitions. [2019-12-07 18:07:48,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:07:48,455 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:07:48,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:07:48,455 INFO L225 Difference]: With dead ends: 27 [2019-12-07 18:07:48,456 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 18:07:48,456 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:07:48,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 18:07:48,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 18:07:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 18:07:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2019-12-07 18:07:48,458 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2019-12-07 18:07:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:07:48,458 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2019-12-07 18:07:48,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:07:48,458 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2019-12-07 18:07:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:07:48,458 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:07:48,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:07:48,459 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:07:48,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:07:48,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1131912426, now seen corresponding path program 2 times [2019-12-07 18:07:48,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:07:48,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389190822] [2019-12-07 18:07:48,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:07:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:07:48,513 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 18:07:48,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389190822] [2019-12-07 18:07:48,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:07:48,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:07:48,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805168002] [2019-12-07 18:07:48,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:07:48,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:07:48,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:07:48,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:07:48,514 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2019-12-07 18:07:48,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:07:48,527 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2019-12-07 18:07:48,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:07:48,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:07:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:07:48,528 INFO L225 Difference]: With dead ends: 19 [2019-12-07 18:07:48,529 INFO L226 Difference]: Without dead ends: 14 [2019-12-07 18:07:48,529 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:07:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-12-07 18:07:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-12-07 18:07:48,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 18:07:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-12-07 18:07:48,531 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2019-12-07 18:07:48,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:07:48,531 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-12-07 18:07:48,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:07:48,532 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-12-07 18:07:48,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:07:48,532 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:07:48,532 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:07:48,532 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:07:48,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:07:48,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1139321736, now seen corresponding path program 3 times [2019-12-07 18:07:48,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:07:48,533 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425615886] [2019-12-07 18:07:48,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:07:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:07:48,580 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 18:07:48,581 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425615886] [2019-12-07 18:07:48,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:07:48,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:07:48,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272754145] [2019-12-07 18:07:48,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:07:48,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:07:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:07:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:07:48,582 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-12-07 18:07:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:07:48,590 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2019-12-07 18:07:48,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:07:48,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:07:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:07:48,591 INFO L225 Difference]: With dead ends: 13 [2019-12-07 18:07:48,591 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:07:48,591 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:07:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:07:48,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:07:48,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:07:48,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:07:48,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 18:07:48,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:07:48,592 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:07:48,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:07:48,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:07:48,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:07:48,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:07:48 BasicIcfg [2019-12-07 18:07:48,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:07:48,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:07:48,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:07:48,595 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:07:48,596 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:07:46" (3/4) ... [2019-12-07 18:07:48,598 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:07:48,602 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 18:07:48,602 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 18:07:48,603 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 18:07:48,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2019-12-07 18:07:48,606 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 18:07:48,607 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:07:48,642 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7721d41a-8765-42c7-95e1-b0b2da38aa26/bin/uautomizer/witness.graphml [2019-12-07 18:07:48,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:07:48,643 INFO L168 Benchmark]: Toolchain (without parser) took 2285.92 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 933.9 MB in the beginning and 995.0 MB in the end (delta: -61.1 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,644 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:07:48,644 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 933.9 MB in the beginning and 1.0 GB in the end (delta: -116.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,645 INFO L168 Benchmark]: Boogie Preprocessor took 17.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,646 INFO L168 Benchmark]: RCFGBuilder took 216.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,646 INFO L168 Benchmark]: TraceAbstraction took 1635.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 999.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,646 INFO L168 Benchmark]: Witness Printer took 46.67 ms. Allocated memory is still 1.1 GB. Free memory was 999.8 MB in the beginning and 995.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:07:48,649 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 954.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.75 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 84.9 MB). Free memory was 933.9 MB in the beginning and 1.0 GB in the end (delta: -116.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 216.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1635.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 999.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 46.67 ms. Allocated memory is still 1.1 GB. Free memory was 999.8 MB in the beginning and 995.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 0.8s, 64 ProgramPointsBefore, 21 ProgramPointsAfterwards, 55 TransitionsBefore, 15 TransitionsAfterwards, 450 CoEnabledTransitionPairs, 6 FixpointIterations, 15 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 226 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 13 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 467 CheckedPairsTotal, 47 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, 55 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 87 SDslu, 44 SDs, 0 SdLazy, 61 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 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...