./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b55cd39bd506cf3dcd548eec1f2cee49419f161 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:42:45,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:42:45,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:42:45,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:42:45,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:42:45,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:42:45,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:42:45,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:42:45,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:42:45,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:42:45,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:42:45,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:42:45,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:42:45,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:42:45,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:42:45,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:42:45,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:42:45,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:42:45,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:42:45,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:42:45,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:42:45,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:42:45,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:42:45,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:42:45,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:42:45,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:42:45,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:42:45,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:42:45,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:42:45,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:42:45,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:42:45,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:42:45,764 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:42:45,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:42:45,765 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:42:45,765 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:42:45,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:42:45,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:42:45,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:42:45,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:42:45,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:42:45,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:42:45,777 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:42:45,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:42:45,778 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:42:45,778 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:42:45,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:42:45,779 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:42:45,780 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:42:45,780 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:42:45,780 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:42:45,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:42:45,780 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:42:45,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:42:45,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:42:45,782 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:42:45,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:42:45,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:42:45,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:42:45,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:42:45,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:42:45,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:42:45,783 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan 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 -> Taipan 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 -> 5b55cd39bd506cf3dcd548eec1f2cee49419f161 [2019-12-07 20:42:45,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:42:45,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:42:45,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:42:45,895 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:42:45,895 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:42:45,896 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-12-07 20:42:45,932 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/data/0964c9011/af0c3c260a10498a90b5acb17c47cd1c/FLAG61549a71d [2019-12-07 20:42:46,454 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:42:46,455 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2019-12-07 20:42:46,467 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/data/0964c9011/af0c3c260a10498a90b5acb17c47cd1c/FLAG61549a71d [2019-12-07 20:42:46,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/data/0964c9011/af0c3c260a10498a90b5acb17c47cd1c [2019-12-07 20:42:46,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:42:46,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:42:46,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:42:46,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:42:46,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:42:46,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:42:46" (1/1) ... [2019-12-07 20:42:46,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766fdc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:46, skipping insertion in model container [2019-12-07 20:42:46,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:42:46" (1/1) ... [2019-12-07 20:42:46,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:42:47,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:42:47,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:42:47,239 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:42:47,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:42:47,319 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:42:47,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47 WrapperNode [2019-12-07 20:42:47,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:42:47,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:42:47,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:42:47,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:42:47,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,336 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,351 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:42:47,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:42:47,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:42:47,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:42:47,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,360 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... [2019-12-07 20:42:47,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:42:47,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:42:47,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:42:47,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:42:47,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/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 20:42:47,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:42:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-12-07 20:42:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:42:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:42:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-12-07 20:42:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-12-07 20:42:47,426 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-12-07 20:42:47,426 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-12-07 20:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-12-07 20:42:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-12-07 20:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-12-07 20:42:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-12-07 20:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-12-07 20:42:47,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:42:47,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:42:47,429 WARN L205 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-12-07 20:42:47,637 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:42:47,637 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 20:42:47,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:42:47 BoogieIcfgContainer [2019-12-07 20:42:47,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:42:47,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:42:47,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:42:47,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:42:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:42:46" (1/3) ... [2019-12-07 20:42:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70402bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:42:47, skipping insertion in model container [2019-12-07 20:42:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:42:47" (2/3) ... [2019-12-07 20:42:47,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70402bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:42:47, skipping insertion in model container [2019-12-07 20:42:47,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:42:47" (3/3) ... [2019-12-07 20:42:47,642 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2019-12-07 20:42:47,649 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-12-07 20:42:47,649 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:42:47,653 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:42:47,653 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2019-12-07 20:42:47,672 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,672 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,672 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,673 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,674 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,675 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,675 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,675 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,675 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,675 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,675 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-12-07 20:42:47,692 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 20:42:47,705 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:42:47,705 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:42:47,705 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:42:47,705 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:42:47,705 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:42:47,705 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:42:47,705 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:42:47,705 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:42:47,714 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 63 transitions [2019-12-07 20:42:47,715 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-12-07 20:42:47,748 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-12-07 20:42:47,748 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:42:47,752 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 20:42:47,755 INFO L68 FinitePrefix]: Start finitePrefix. Operand has 75 places, 63 transitions [2019-12-07 20:42:47,766 INFO L134 PetriNetUnfolder]: 1/59 cut-off events. [2019-12-07 20:42:47,766 INFO L135 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2019-12-07 20:42:47,767 INFO L76 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs. 12/69 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2019-12-07 20:42:47,768 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 732 [2019-12-07 20:42:47,769 INFO L170 etLargeBlockEncoding]: Semantic Check. [2019-12-07 20:42:48,675 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2019-12-07 20:42:48,959 INFO L206 etLargeBlockEncoding]: Checked pairs total: 749 [2019-12-07 20:42:48,959 INFO L214 etLargeBlockEncoding]: Total number of compositions: 49 [2019-12-07 20:42:48,961 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 19 transitions [2019-12-07 20:42:48,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 94 states. [2019-12-07 20:42:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states. [2019-12-07 20:42:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:42:48,976 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:48,977 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:48,977 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:48,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:48,980 INFO L82 PathProgramCache]: Analyzing trace with hash 364087523, now seen corresponding path program 1 times [2019-12-07 20:42:48,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:48,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847667819] [2019-12-07 20:42:48,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,134 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 20:42:49,134 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847667819] [2019-12-07 20:42:49,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:42:49,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535065427] [2019-12-07 20:42:49,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:42:49,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:42:49,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:42:49,149 INFO L87 Difference]: Start difference. First operand 94 states. Second operand 3 states. [2019-12-07 20:42:49,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,171 INFO L93 Difference]: Finished difference Result 86 states and 212 transitions. [2019-12-07 20:42:49,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:42:49,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 20:42:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,181 INFO L225 Difference]: With dead ends: 86 [2019-12-07 20:42:49,181 INFO L226 Difference]: Without dead ends: 70 [2019-12-07 20:42:49,182 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:42:49,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-12-07 20:42:49,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2019-12-07 20:42:49,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-12-07 20:42:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 164 transitions. [2019-12-07 20:42:49,215 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 164 transitions. Word has length 10 [2019-12-07 20:42:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,216 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 164 transitions. [2019-12-07 20:42:49,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:42:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 164 transitions. [2019-12-07 20:42:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:42:49,217 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,217 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,218 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash -662886856, now seen corresponding path program 1 times [2019-12-07 20:42:49,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,218 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786949520] [2019-12-07 20:42:49,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,290 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 20:42:49,290 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786949520] [2019-12-07 20:42:49,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:42:49,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741433575] [2019-12-07 20:42:49,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:42:49,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:42:49,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:42:49,292 INFO L87 Difference]: Start difference. First operand 70 states and 164 transitions. Second operand 4 states. [2019-12-07 20:42:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,310 INFO L93 Difference]: Finished difference Result 89 states and 189 transitions. [2019-12-07 20:42:49,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:42:49,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 20:42:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,311 INFO L225 Difference]: With dead ends: 89 [2019-12-07 20:42:49,311 INFO L226 Difference]: Without dead ends: 79 [2019-12-07 20:42:49,312 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:42:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-12-07 20:42:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2019-12-07 20:42:49,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 20:42:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 149 transitions. [2019-12-07 20:42:49,318 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 149 transitions. Word has length 11 [2019-12-07 20:42:49,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,319 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 149 transitions. [2019-12-07 20:42:49,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:42:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 149 transitions. [2019-12-07 20:42:49,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 20:42:49,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,320 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,320 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,320 INFO L82 PathProgramCache]: Analyzing trace with hash 925343788, now seen corresponding path program 1 times [2019-12-07 20:42:49,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635579914] [2019-12-07 20:42:49,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,389 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 20:42:49,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635579914] [2019-12-07 20:42:49,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 20:42:49,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131038317] [2019-12-07 20:42:49,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 20:42:49,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 20:42:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:42:49,390 INFO L87 Difference]: Start difference. First operand 71 states and 149 transitions. Second operand 6 states. [2019-12-07 20:42:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,435 INFO L93 Difference]: Finished difference Result 76 states and 150 transitions. [2019-12-07 20:42:49,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 20:42:49,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-12-07 20:42:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,437 INFO L225 Difference]: With dead ends: 76 [2019-12-07 20:42:49,437 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 20:42:49,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:42:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 20:42:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2019-12-07 20:42:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 20:42:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 109 transitions. [2019-12-07 20:42:49,441 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 109 transitions. Word has length 12 [2019-12-07 20:42:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,441 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 109 transitions. [2019-12-07 20:42:49,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 20:42:49,441 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 109 transitions. [2019-12-07 20:42:49,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 20:42:49,442 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,442 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,442 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1348878632, now seen corresponding path program 1 times [2019-12-07 20:42:49,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668635678] [2019-12-07 20:42:49,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,498 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 20:42:49,498 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668635678] [2019-12-07 20:42:49,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 20:42:49,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471438365] [2019-12-07 20:42:49,499 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 20:42:49,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 20:42:49,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:42:49,500 INFO L87 Difference]: Start difference. First operand 58 states and 109 transitions. Second operand 7 states. [2019-12-07 20:42:49,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,559 INFO L93 Difference]: Finished difference Result 56 states and 103 transitions. [2019-12-07 20:42:49,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 20:42:49,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-12-07 20:42:49,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,560 INFO L225 Difference]: With dead ends: 56 [2019-12-07 20:42:49,560 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 20:42:49,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-12-07 20:42:49,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 20:42:49,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2019-12-07 20:42:49,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-12-07 20:42:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 88 transitions. [2019-12-07 20:42:49,563 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 88 transitions. Word has length 13 [2019-12-07 20:42:49,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,563 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 88 transitions. [2019-12-07 20:42:49,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 20:42:49,563 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 88 transitions. [2019-12-07 20:42:49,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 20:42:49,564 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,564 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,564 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1134517083, now seen corresponding path program 1 times [2019-12-07 20:42:49,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,565 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196586188] [2019-12-07 20:42:49,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,608 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 20:42:49,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196586188] [2019-12-07 20:42:49,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:42:49,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566871437] [2019-12-07 20:42:49,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:42:49,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:42:49,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:42:49,610 INFO L87 Difference]: Start difference. First operand 45 states and 88 transitions. Second operand 5 states. [2019-12-07 20:42:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,628 INFO L93 Difference]: Finished difference Result 59 states and 104 transitions. [2019-12-07 20:42:49,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:42:49,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 20:42:49,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,629 INFO L225 Difference]: With dead ends: 59 [2019-12-07 20:42:49,629 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 20:42:49,629 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:42:49,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 20:42:49,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2019-12-07 20:42:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-12-07 20:42:49,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 54 transitions. [2019-12-07 20:42:49,633 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 54 transitions. Word has length 14 [2019-12-07 20:42:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,633 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 54 transitions. [2019-12-07 20:42:49,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:42:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 54 transitions. [2019-12-07 20:42:49,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 20:42:49,634 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,634 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,634 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1937154369, now seen corresponding path program 2 times [2019-12-07 20:42:49,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788780844] [2019-12-07 20:42:49,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,687 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 20:42:49,687 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788780844] [2019-12-07 20:42:49,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:42:49,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581969662] [2019-12-07 20:42:49,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:42:49,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:42:49,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:42:49,689 INFO L87 Difference]: Start difference. First operand 33 states and 54 transitions. Second operand 5 states. [2019-12-07 20:42:49,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,708 INFO L93 Difference]: Finished difference Result 42 states and 64 transitions. [2019-12-07 20:42:49,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:42:49,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-12-07 20:42:49,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,709 INFO L225 Difference]: With dead ends: 42 [2019-12-07 20:42:49,709 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 20:42:49,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-12-07 20:42:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 20:42:49,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 20:42:49,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 20:42:49,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-12-07 20:42:49,712 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 14 [2019-12-07 20:42:49,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,712 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-12-07 20:42:49,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:42:49,712 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2019-12-07 20:42:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 20:42:49,713 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,713 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,713 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,713 INFO L82 PathProgramCache]: Analyzing trace with hash 562302313, now seen corresponding path program 3 times [2019-12-07 20:42:49,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,714 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820559325] [2019-12-07 20:42:49,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,757 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 20:42:49,757 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820559325] [2019-12-07 20:42:49,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:42:49,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894677745] [2019-12-07 20:42:49,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:42:49,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:42:49,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:42:49,758 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 4 states. [2019-12-07 20:42:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,772 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2019-12-07 20:42:49,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:42:49,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 20:42:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,773 INFO L225 Difference]: With dead ends: 28 [2019-12-07 20:42:49,773 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 20:42:49,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 20:42:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 20:42:49,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 20:42:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 20:42:49,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-12-07 20:42:49,775 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 14 [2019-12-07 20:42:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,775 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-12-07 20:42:49,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:42:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2019-12-07 20:42:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 20:42:49,775 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:42:49,776 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:42:49,776 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:42:49,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:42:49,776 INFO L82 PathProgramCache]: Analyzing trace with hash 586461853, now seen corresponding path program 4 times [2019-12-07 20:42:49,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:42:49,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312900891] [2019-12-07 20:42:49,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:42:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:42:49,800 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 20:42:49,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312900891] [2019-12-07 20:42:49,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:42:49,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:42:49,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895642362] [2019-12-07 20:42:49,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:42:49,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:42:49,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:42:49,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:42:49,801 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2019-12-07 20:42:49,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:42:49,812 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2019-12-07 20:42:49,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:42:49,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 20:42:49,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:42:49,813 INFO L225 Difference]: With dead ends: 22 [2019-12-07 20:42:49,813 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:42:49,813 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:42:49,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:42:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:42:49,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:42:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:42:49,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-12-07 20:42:49,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:42:49,814 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:42:49,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:42:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:42:49,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:42:49,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:42:49 BasicIcfg [2019-12-07 20:42:49,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:42:49,819 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:42:49,819 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:42:49,819 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:42:49,819 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:42:47" (3/4) ... [2019-12-07 20:42:49,822 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:42:49,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-12-07 20:42:49,828 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-12-07 20:42:49,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-12-07 20:42:49,829 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-12-07 20:42:49,833 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-12-07 20:42:49,833 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 20:42:49,833 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 20:42:49,865 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5014d0ea-1183-4ba8-9a13-a394e610b1ed/bin/utaipan/witness.graphml [2019-12-07 20:42:49,865 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:42:49,867 INFO L168 Benchmark]: Toolchain (without parser) took 2898.13 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 933.5 MB in the beginning and 904.3 MB in the end (delta: 29.2 MB). Peak memory consumption was 126.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:42:49,867 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:42:49,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 933.5 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:42:49,868 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.41 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 20:42:49,868 INFO L168 Benchmark]: Boogie Preprocessor took 20.24 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 20:42:49,868 INFO L168 Benchmark]: RCFGBuilder took 266.42 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 20:42:49,868 INFO L168 Benchmark]: TraceAbstraction took 2179.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 906.1 MB in the end (delta: 128.2 MB). Peak memory consumption was 128.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:42:49,869 INFO L168 Benchmark]: Witness Printer took 47.04 ms. Allocated memory is still 1.1 GB. Free memory was 906.1 MB in the beginning and 904.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:42:49,870 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 933.5 MB in the beginning and 1.1 GB in the end (delta: -133.4 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.41 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.24 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. * RCFGBuilder took 266.42 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 2179.60 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 906.1 MB in the end (delta: 128.2 MB). Peak memory consumption was 128.2 MB. Max. memory is 11.5 GB. * Witness Printer took 47.04 ms. Allocated memory is still 1.1 GB. Free memory was 906.1 MB in the beginning and 904.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.2s, 75 ProgramPointsBefore, 27 ProgramPointsAfterwards, 63 TransitionsBefore, 19 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 363 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 9 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 749 CheckedPairsTotal, 49 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 5 procedures, 63 locations, 1 error locations. Result: SAFE, OverallTime: 2.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 134 SDslu, 108 SDs, 0 SdLazy, 97 SolverSat, 68 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred 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, 8 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...