./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6963db7fce396e00371f494f6797e19a5cce06a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:35:44,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:35:44,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:35:44,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:35:44,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:35:44,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:35:44,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:35:44,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:35:44,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:35:44,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:35:44,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:35:44,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:35:44,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:35:44,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:35:44,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:35:44,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:35:44,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:35:44,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:35:44,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:35:44,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:35:44,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:35:44,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:35:44,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:35:44,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:35:44,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:35:44,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:35:44,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:35:44,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:35:44,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:35:44,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:35:44,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:35:44,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:35:44,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:35:44,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:35:44,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:35:44,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:35:44,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:35:44,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:35:44,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:35:44,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:35:44,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:35:44,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:35:44,187 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:35:44,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:35:44,192 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:35:44,192 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:35:44,192 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:35:44,193 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:35:44,193 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:35:44,193 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:35:44,193 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:35:44,193 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:35:44,194 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:35:44,195 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:35:44,195 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:35:44,195 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:35:44,195 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:35:44,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:35:44,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:35:44,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:35:44,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:35:44,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:35:44,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:35:44,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:35:44,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:35:44,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:35:44,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:35:44,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:35:44,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:35:44,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:35:44,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:35:44,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:35:44,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:35:44,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:35:44,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:35:44,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:35:44,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:35:44,200 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:35:44,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:35:44,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:35:44,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:35:44,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:35:44,201 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6963db7fce396e00371f494f6797e19a5cce06a [2020-11-28 07:35:44,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:35:44,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:35:44,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:35:44,444 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:35:44,459 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:35:44,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2020-11-28 07:35:44,537 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/data/45266b82f/f93c081d65fd42d99bb3d6a34378d667/FLAGcbbf12032 [2020-11-28 07:35:45,033 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:35:45,033 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/sv-benchmarks/c/pthread-wmm/safe016_pso.opt.i [2020-11-28 07:35:45,047 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/data/45266b82f/f93c081d65fd42d99bb3d6a34378d667/FLAGcbbf12032 [2020-11-28 07:35:45,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/data/45266b82f/f93c081d65fd42d99bb3d6a34378d667 [2020-11-28 07:35:45,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:35:45,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:35:45,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:45,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:35:45,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:35:45,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:45,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50992208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45, skipping insertion in model container [2020-11-28 07:35:45,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:45,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:35:45,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:35:45,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:45,788 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:35:45,852 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:35:45,951 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:35:45,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45 WrapperNode [2020-11-28 07:35:45,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:35:45,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:45,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:35:45,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:35:45,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:35:46,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:35:46,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:35:46,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:35:46,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... [2020-11-28 07:35:46,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:35:46,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:35:46,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:35:46,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:35:46,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/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 [2020-11-28 07:35:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 07:35:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-28 07:35:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:35:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:35:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-28 07:35:46,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-28 07:35:46,181 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-28 07:35:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-28 07:35:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-28 07:35:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-28 07:35:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-11-28 07:35:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-11-28 07:35:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:35:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-28 07:35:46,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:35:46,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:35:46,188 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-28 07:35:46,643 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:35:46,644 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-28 07:35:46,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:46 BoogieIcfgContainer [2020-11-28 07:35:46,646 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:35:46,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:35:46,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:35:46,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:35:46,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:35:45" (1/3) ... [2020-11-28 07:35:46,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9420eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:46, skipping insertion in model container [2020-11-28 07:35:46,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:35:45" (2/3) ... [2020-11-28 07:35:46,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d9420eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:35:46, skipping insertion in model container [2020-11-28 07:35:46,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:46" (3/3) ... [2020-11-28 07:35:46,654 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.opt.i [2020-11-28 07:35:46,664 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-28 07:35:46,665 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:35:46,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:35:46,670 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-28 07:35:46,694 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,695 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,695 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,696 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,696 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,696 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,697 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,697 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,698 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,698 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,699 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,699 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,699 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,699 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,700 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,700 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,703 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,703 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,712 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,712 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,712 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,712 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,722 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,728 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,729 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,729 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-28 07:35:46,734 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-28 07:35:46,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-28 07:35:46,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:35:46,779 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:35:46,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:35:46,779 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:35:46,779 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:35:46,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:35:46,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:35:46,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:35:46,799 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-28 07:35:46,801 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-28 07:35:46,803 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 89 transitions, 198 flow [2020-11-28 07:35:46,805 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 99 places, 89 transitions, 198 flow [2020-11-28 07:35:46,854 INFO L129 PetriNetUnfolder]: 3/85 cut-off events. [2020-11-28 07:35:46,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-28 07:35:46,858 INFO L80 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 85 events. 3/85 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2020-11-28 07:35:46,862 INFO L116 LiptonReduction]: Number of co-enabled transitions 2042 [2020-11-28 07:35:49,491 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-11-28 07:35:49,637 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-28 07:35:49,759 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-11-28 07:35:49,904 INFO L131 LiptonReduction]: Checked pairs total: 4334 [2020-11-28 07:35:49,904 INFO L133 LiptonReduction]: Total number of compositions: 82 [2020-11-28 07:35:49,910 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 26 transitions, 72 flow [2020-11-28 07:35:49,973 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 706 states. [2020-11-28 07:35:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states. [2020-11-28 07:35:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:35:49,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:49,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:49,989 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:49,995 INFO L82 PathProgramCache]: Analyzing trace with hash -782796091, now seen corresponding path program 1 times [2020-11-28 07:35:50,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:50,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589801382] [2020-11-28 07:35:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:50,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589801382] [2020-11-28 07:35:50,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:50,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:35:50,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085436306] [2020-11-28 07:35:50,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:35:50,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:50,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:35:50,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:35:50,263 INFO L87 Difference]: Start difference. First operand 706 states. Second operand 3 states. [2020-11-28 07:35:50,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:50,354 INFO L93 Difference]: Finished difference Result 670 states and 2295 transitions. [2020-11-28 07:35:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:35:50,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-28 07:35:50,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:50,386 INFO L225 Difference]: With dead ends: 670 [2020-11-28 07:35:50,392 INFO L226 Difference]: Without dead ends: 526 [2020-11-28 07:35:50,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:35:50,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2020-11-28 07:35:50,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2020-11-28 07:35:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2020-11-28 07:35:50,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1743 transitions. [2020-11-28 07:35:50,520 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1743 transitions. Word has length 10 [2020-11-28 07:35:50,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:50,521 INFO L481 AbstractCegarLoop]: Abstraction has 526 states and 1743 transitions. [2020-11-28 07:35:50,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:35:50,521 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1743 transitions. [2020-11-28 07:35:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:35:50,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:50,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:50,526 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:35:50,526 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:50,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:50,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1488897790, now seen corresponding path program 1 times [2020-11-28 07:35:50,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:50,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533066833] [2020-11-28 07:35:50,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:50,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:50,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533066833] [2020-11-28 07:35:50,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:50,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:35:50,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881737868] [2020-11-28 07:35:50,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:35:50,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:35:50,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:35:50,673 INFO L87 Difference]: Start difference. First operand 526 states and 1743 transitions. Second operand 4 states. [2020-11-28 07:35:50,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:50,709 INFO L93 Difference]: Finished difference Result 748 states and 2407 transitions. [2020-11-28 07:35:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:35:50,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 07:35:50,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:50,714 INFO L225 Difference]: With dead ends: 748 [2020-11-28 07:35:50,714 INFO L226 Difference]: Without dead ends: 460 [2020-11-28 07:35:50,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:35:50,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-11-28 07:35:50,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2020-11-28 07:35:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-11-28 07:35:50,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 1467 transitions. [2020-11-28 07:35:50,735 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 1467 transitions. Word has length 11 [2020-11-28 07:35:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:50,735 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 1467 transitions. [2020-11-28 07:35:50,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:35:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 1467 transitions. [2020-11-28 07:35:50,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 07:35:50,745 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:50,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:50,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:35:50,745 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:50,746 INFO L82 PathProgramCache]: Analyzing trace with hash -647802977, now seen corresponding path program 1 times [2020-11-28 07:35:50,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:50,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278539633] [2020-11-28 07:35:50,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:50,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:50,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278539633] [2020-11-28 07:35:50,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:50,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 07:35:50,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641717222] [2020-11-28 07:35:50,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:35:50,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:35:50,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:35:50,801 INFO L87 Difference]: Start difference. First operand 460 states and 1467 transitions. Second operand 3 states. [2020-11-28 07:35:50,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:50,817 INFO L93 Difference]: Finished difference Result 442 states and 1398 transitions. [2020-11-28 07:35:50,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:35:50,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-28 07:35:50,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:50,822 INFO L225 Difference]: With dead ends: 442 [2020-11-28 07:35:50,822 INFO L226 Difference]: Without dead ends: 442 [2020-11-28 07:35:50,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:35:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-11-28 07:35:50,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-11-28 07:35:50,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-11-28 07:35:50,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1398 transitions. [2020-11-28 07:35:50,841 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1398 transitions. Word has length 12 [2020-11-28 07:35:50,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:50,841 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1398 transitions. [2020-11-28 07:35:50,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:35:50,841 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1398 transitions. [2020-11-28 07:35:50,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:35:50,843 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:50,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:50,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:35:50,843 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:50,845 INFO L82 PathProgramCache]: Analyzing trace with hash -912860165, now seen corresponding path program 1 times [2020-11-28 07:35:50,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:50,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471124926] [2020-11-28 07:35:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:50,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:50,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471124926] [2020-11-28 07:35:50,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:50,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:35:50,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104941846] [2020-11-28 07:35:50,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:35:50,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:50,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:35:50,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:35:50,954 INFO L87 Difference]: Start difference. First operand 442 states and 1398 transitions. Second operand 4 states. [2020-11-28 07:35:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:51,019 INFO L93 Difference]: Finished difference Result 788 states and 2333 transitions. [2020-11-28 07:35:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:35:51,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 07:35:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:51,024 INFO L225 Difference]: With dead ends: 788 [2020-11-28 07:35:51,024 INFO L226 Difference]: Without dead ends: 412 [2020-11-28 07:35:51,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:35:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-11-28 07:35:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 376. [2020-11-28 07:35:51,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 376 states. [2020-11-28 07:35:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1087 transitions. [2020-11-28 07:35:51,042 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1087 transitions. Word has length 13 [2020-11-28 07:35:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:51,042 INFO L481 AbstractCegarLoop]: Abstraction has 376 states and 1087 transitions. [2020-11-28 07:35:51,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:35:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1087 transitions. [2020-11-28 07:35:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:35:51,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:51,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:51,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 07:35:51,047 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:51,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:51,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1787336884, now seen corresponding path program 1 times [2020-11-28 07:35:51,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:51,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576517118] [2020-11-28 07:35:51,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:51,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:51,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576517118] [2020-11-28 07:35:51,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:51,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:35:51,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331569399] [2020-11-28 07:35:51,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:35:51,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:51,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:35:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:35:51,180 INFO L87 Difference]: Start difference. First operand 376 states and 1087 transitions. Second operand 4 states. [2020-11-28 07:35:51,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:51,229 INFO L93 Difference]: Finished difference Result 494 states and 1370 transitions. [2020-11-28 07:35:51,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:35:51,230 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-28 07:35:51,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:51,232 INFO L225 Difference]: With dead ends: 494 [2020-11-28 07:35:51,233 INFO L226 Difference]: Without dead ends: 254 [2020-11-28 07:35:51,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:35:51,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-11-28 07:35:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-11-28 07:35:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-11-28 07:35:51,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 707 transitions. [2020-11-28 07:35:51,246 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 707 transitions. Word has length 13 [2020-11-28 07:35:51,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:51,246 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 707 transitions. [2020-11-28 07:35:51,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:35:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 707 transitions. [2020-11-28 07:35:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:35:51,248 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:51,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:51,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-28 07:35:51,248 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:51,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:51,249 INFO L82 PathProgramCache]: Analyzing trace with hash 238144508, now seen corresponding path program 1 times [2020-11-28 07:35:51,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:51,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72706166] [2020-11-28 07:35:51,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:51,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:51,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72706166] [2020-11-28 07:35:51,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:51,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:35:51,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078559713] [2020-11-28 07:35:51,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:35:51,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:51,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:35:51,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:35:51,346 INFO L87 Difference]: Start difference. First operand 254 states and 707 transitions. Second operand 4 states. [2020-11-28 07:35:51,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:51,406 INFO L93 Difference]: Finished difference Result 315 states and 812 transitions. [2020-11-28 07:35:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:35:51,407 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-28 07:35:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:51,409 INFO L225 Difference]: With dead ends: 315 [2020-11-28 07:35:51,409 INFO L226 Difference]: Without dead ends: 230 [2020-11-28 07:35:51,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:35:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-11-28 07:35:51,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-11-28 07:35:51,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-11-28 07:35:51,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 601 transitions. [2020-11-28 07:35:51,417 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 601 transitions. Word has length 14 [2020-11-28 07:35:51,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:51,418 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 601 transitions. [2020-11-28 07:35:51,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:35:51,418 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 601 transitions. [2020-11-28 07:35:51,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:35:51,418 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:51,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:51,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-28 07:35:51,419 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:51,419 INFO L82 PathProgramCache]: Analyzing trace with hash 243922642, now seen corresponding path program 1 times [2020-11-28 07:35:51,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:51,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33671891] [2020-11-28 07:35:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:51,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:51,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33671891] [2020-11-28 07:35:51,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:51,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:35:51,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470934580] [2020-11-28 07:35:51,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:35:51,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:51,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:35:51,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:35:51,521 INFO L87 Difference]: Start difference. First operand 230 states and 601 transitions. Second operand 5 states. [2020-11-28 07:35:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:51,584 INFO L93 Difference]: Finished difference Result 246 states and 585 transitions. [2020-11-28 07:35:51,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:35:51,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 07:35:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:51,586 INFO L225 Difference]: With dead ends: 246 [2020-11-28 07:35:51,586 INFO L226 Difference]: Without dead ends: 178 [2020-11-28 07:35:51,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:35:51,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-28 07:35:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-11-28 07:35:51,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-11-28 07:35:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 414 transitions. [2020-11-28 07:35:51,593 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 414 transitions. Word has length 15 [2020-11-28 07:35:51,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:51,593 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 414 transitions. [2020-11-28 07:35:51,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:35:51,593 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 414 transitions. [2020-11-28 07:35:51,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:35:51,594 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:51,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:51,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-28 07:35:51,594 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1046603743, now seen corresponding path program 1 times [2020-11-28 07:35:51,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:51,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306605531] [2020-11-28 07:35:51,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:51,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:51,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306605531] [2020-11-28 07:35:51,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:51,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:35:51,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528978813] [2020-11-28 07:35:51,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:35:51,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:51,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:35:51,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:35:51,721 INFO L87 Difference]: Start difference. First operand 178 states and 414 transitions. Second operand 6 states. [2020-11-28 07:35:51,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:51,809 INFO L93 Difference]: Finished difference Result 171 states and 376 transitions. [2020-11-28 07:35:51,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:35:51,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:35:51,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:51,810 INFO L225 Difference]: With dead ends: 171 [2020-11-28 07:35:51,811 INFO L226 Difference]: Without dead ends: 137 [2020-11-28 07:35:51,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:35:51,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-11-28 07:35:51,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-11-28 07:35:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-11-28 07:35:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 301 transitions. [2020-11-28 07:35:51,816 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 301 transitions. Word has length 16 [2020-11-28 07:35:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:51,816 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 301 transitions. [2020-11-28 07:35:51,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:35:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 301 transitions. [2020-11-28 07:35:51,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:35:51,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:51,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:51,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-28 07:35:51,817 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:51,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:51,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1563997083, now seen corresponding path program 1 times [2020-11-28 07:35:51,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:51,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233459495] [2020-11-28 07:35:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:51,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:51,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233459495] [2020-11-28 07:35:51,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:51,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:35:51,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467447305] [2020-11-28 07:35:51,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:35:51,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:51,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:35:51,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:35:51,969 INFO L87 Difference]: Start difference. First operand 137 states and 301 transitions. Second operand 7 states. [2020-11-28 07:35:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:52,119 INFO L93 Difference]: Finished difference Result 132 states and 289 transitions. [2020-11-28 07:35:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:35:52,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-11-28 07:35:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:52,120 INFO L225 Difference]: With dead ends: 132 [2020-11-28 07:35:52,120 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 07:35:52,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:35:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 07:35:52,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-11-28 07:35:52,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-11-28 07:35:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-11-28 07:35:52,122 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 18 [2020-11-28 07:35:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:52,123 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-11-28 07:35:52,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:35:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-11-28 07:35:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:35:52,123 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:35:52,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:35:52,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-28 07:35:52,124 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:35:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:35:52,124 INFO L82 PathProgramCache]: Analyzing trace with hash -299924038, now seen corresponding path program 1 times [2020-11-28 07:35:52,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:35:52,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151385522] [2020-11-28 07:35:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:35:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:35:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:35:52,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151385522] [2020-11-28 07:35:52,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:35:52,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:35:52,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927480869] [2020-11-28 07:35:52,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:35:52,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:35:52,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:35:52,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:35:52,161 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 3 states. [2020-11-28 07:35:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:35:52,168 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-11-28 07:35:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:35:52,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-11-28 07:35:52,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:35:52,170 INFO L225 Difference]: With dead ends: 50 [2020-11-28 07:35:52,170 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:35:52,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:35:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:35:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:35:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:35:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:35:52,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-28 07:35:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:35:52,171 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:35:52,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:35:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:35:52,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:35:52,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-28 07:35:52,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:35:52 BasicIcfg [2020-11-28 07:35:52,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:35:52,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:35:52,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:35:52,175 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:35:52,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:35:46" (3/4) ... [2020-11-28 07:35:52,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:35:52,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-28 07:35:52,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-28 07:35:52,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-28 07:35:52,188 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2020-11-28 07:35:52,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2020-11-28 07:35:52,196 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:35:52,197 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:35:52,197 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:35:52,254 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c60b336-38a0-4468-aaa9-5ab263ba4d05/bin/utaipan/witness.graphml [2020-11-28 07:35:52,254 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:35:52,256 INFO L168 Benchmark]: Toolchain (without parser) took 6894.95 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 93.8 MB in the beginning and 133.9 MB in the end (delta: -40.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,260 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:35:52,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.21 ms. Allocated memory is still 121.6 MB. Free memory was 93.8 MB in the beginning and 78.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.46 ms. Allocated memory is still 121.6 MB. Free memory was 78.7 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,262 INFO L168 Benchmark]: Boogie Preprocessor took 55.39 ms. Allocated memory is still 121.6 MB. Free memory was 76.6 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,262 INFO L168 Benchmark]: RCFGBuilder took 552.29 ms. Allocated memory is still 121.6 MB. Free memory was 75.3 MB in the beginning and 87.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,263 INFO L168 Benchmark]: TraceAbstraction took 5527.56 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 87.0 MB in the beginning and 137.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,264 INFO L168 Benchmark]: Witness Printer took 79.03 ms. Allocated memory is still 176.2 MB. Free memory was 137.0 MB in the beginning and 133.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:35:52,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 83.9 MB. Free memory was 42.4 MB in the beginning and 42.3 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.21 ms. Allocated memory is still 121.6 MB. Free memory was 93.8 MB in the beginning and 78.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.46 ms. Allocated memory is still 121.6 MB. Free memory was 78.7 MB in the beginning and 77.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.39 ms. Allocated memory is still 121.6 MB. Free memory was 76.6 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 552.29 ms. Allocated memory is still 121.6 MB. Free memory was 75.3 MB in the beginning and 87.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5527.56 ms. Allocated memory was 121.6 MB in the beginning and 176.2 MB in the end (delta: 54.5 MB). Free memory was 87.0 MB in the beginning and 137.0 MB in the end (delta: -50.0 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 79.03 ms. Allocated memory is still 176.2 MB. Free memory was 137.0 MB in the beginning and 133.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1489 VarBasedMoverChecksPositive, 67 VarBasedMoverChecksNegative, 13 SemBasedMoverChecksPositive, 54 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.5s, 106 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 99 PlacesBefore, 38 PlacesAfterwards, 89 TransitionsBefore, 26 TransitionsAfterwards, 2042 CoEnabledTransitionPairs, 7 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4334 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.3s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 222 SDtfs, 227 SDslu, 318 SDs, 0 SdLazy, 183 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=706occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 36 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 5404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...