./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_power.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_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_power.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/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 f9a4b5bbd2d49fcd5fe4c071ba7abbd074599b09 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:53:36,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:53:36,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:53:36,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:53:36,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:53:36,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:53:36,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:53:36,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:53:36,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:53:36,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:53:36,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:53:36,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:53:36,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:53:36,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:53:36,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:53:36,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:53:36,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:53:36,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:53:36,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:53:36,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:53:36,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:53:36,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:53:36,211 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:53:36,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:53:36,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:53:36,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:53:36,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:53:36,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:53:36,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:53:36,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:53:36,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:53:36,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:53:36,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:53:36,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:53:36,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:53:36,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:53:36,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:53:36,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:53:36,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:53:36,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:53:36,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:53:36,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:53:36,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:53:36,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:53:36,294 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:53:36,294 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:53:36,295 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:53:36,295 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:53:36,295 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:53:36,296 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:53:36,296 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:53:36,296 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:53:36,296 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:53:36,297 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:53:36,297 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:53:36,297 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:53:36,298 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:53:36,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:53:36,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:53:36,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:53:36,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:53:36,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:53:36,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:53:36,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:53:36,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:53:36,301 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:53:36,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:53:36,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:53:36,302 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:53:36,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:53:36,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:53:36,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:53:36,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:53:36,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:53:36,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:53:36,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:53:36,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:53:36,304 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:53:36,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:53:36,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:53:36,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:53:36,305 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:53:36,305 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_acd79632-4e77-4bb7-a987-31af44a8ed1e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9a4b5bbd2d49fcd5fe4c071ba7abbd074599b09 [2020-11-22 12:53:36,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:53:36,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:53:36,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:53:36,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:53:36,682 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:53:36,683 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe037_power.opt.i [2020-11-22 12:53:36,774 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/data/8996add66/8ce44083b50e43ada3c9b9e5861381fa/FLAG007d5835a [2020-11-22 12:53:37,451 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:53:37,454 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/sv-benchmarks/c/pthread-wmm/safe037_power.opt.i [2020-11-22 12:53:37,481 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/data/8996add66/8ce44083b50e43ada3c9b9e5861381fa/FLAG007d5835a [2020-11-22 12:53:37,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/data/8996add66/8ce44083b50e43ada3c9b9e5861381fa [2020-11-22 12:53:37,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:53:37,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:53:37,665 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:53:37,666 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:53:37,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:53:37,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:53:37" (1/1) ... [2020-11-22 12:53:37,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cffad3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:37, skipping insertion in model container [2020-11-22 12:53:37,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:53:37" (1/1) ... [2020-11-22 12:53:37,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:53:37,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:53:38,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:53:38,283 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:53:38,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:53:38,466 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:53:38,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38 WrapperNode [2020-11-22 12:53:38,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:53:38,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:53:38,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:53:38,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:53:38,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,495 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:53:38,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:53:38,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:53:38,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:53:38,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... [2020-11-22 12:53:38,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:53:38,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:53:38,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:53:38,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:53:38,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/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 [2020-11-22 12:53:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 12:53:38,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-22 12:53:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:53:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 12:53:38,643 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-22 12:53:38,643 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-22 12:53:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-22 12:53:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-22 12:53:38,644 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-22 12:53:38,644 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-22 12:53:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:53:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-22 12:53:38,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:53:38,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:53:38,648 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-22 12:53:39,198 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:53:39,198 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-22 12:53:39,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:53:39 BoogieIcfgContainer [2020-11-22 12:53:39,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:53:39,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:53:39,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:53:39,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:53:39,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:53:37" (1/3) ... [2020-11-22 12:53:39,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:53:39, skipping insertion in model container [2020-11-22 12:53:39,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:53:38" (2/3) ... [2020-11-22 12:53:39,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:53:39, skipping insertion in model container [2020-11-22 12:53:39,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:53:39" (3/3) ... [2020-11-22 12:53:39,212 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_power.opt.i [2020-11-22 12:53:39,236 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-22 12:53:39,236 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:53:39,242 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:53:39,243 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-22 12:53:39,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,291 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,291 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,292 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,292 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,293 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,294 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,294 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,294 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,295 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,295 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,296 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,296 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,297 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,299 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,318 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,318 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,326 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,327 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,327 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,334 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,335 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,335 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-22 12:53:39,337 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-22 12:53:39,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-22 12:53:39,390 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:53:39,390 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:53:39,390 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:53:39,390 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:53:39,390 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:53:39,391 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:53:39,391 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:53:39,391 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:53:39,409 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-11-22 12:53:39,412 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 12:53:39,416 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 80 transitions, 175 flow [2020-11-22 12:53:39,418 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 87 places, 80 transitions, 175 flow [2020-11-22 12:53:39,508 INFO L129 PetriNetUnfolder]: 3/77 cut-off events. [2020-11-22 12:53:39,508 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-22 12:53:39,514 INFO L80 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 77 events. 3/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-22 12:53:39,520 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-22 12:53:41,131 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-11-22 12:53:42,177 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-22 12:53:42,312 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-22 12:53:42,512 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-11-22 12:53:42,599 INFO L131 LiptonReduction]: Checked pairs total: 2901 [2020-11-22 12:53:42,599 INFO L133 LiptonReduction]: Total number of compositions: 75 [2020-11-22 12:53:42,604 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-11-22 12:53:42,638 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-22 12:53:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-22 12:53:42,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:53:42,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:42,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:42,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:42,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:42,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1054042143, now seen corresponding path program 1 times [2020-11-22 12:53:42,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:42,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829805383] [2020-11-22 12:53:42,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:43,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829805383] [2020-11-22 12:53:43,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:43,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 12:53:43,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121559292] [2020-11-22 12:53:43,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:53:43,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:43,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:53:43,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:53:43,035 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-11-22 12:53:43,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:43,193 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-11-22 12:53:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:53:43,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 12:53:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:43,220 INFO L225 Difference]: With dead ends: 281 [2020-11-22 12:53:43,221 INFO L226 Difference]: Without dead ends: 180 [2020-11-22 12:53:43,222 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 [2020-11-22 12:53:43,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-11-22 12:53:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-11-22 12:53:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-22 12:53:43,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-11-22 12:53:43,336 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-11-22 12:53:43,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:43,338 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-11-22 12:53:43,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:53:43,339 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-11-22 12:53:43,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 12:53:43,342 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:43,343 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:43,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:53:43,343 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:43,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1550829140, now seen corresponding path program 1 times [2020-11-22 12:53:43,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:43,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925746511] [2020-11-22 12:53:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:43,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925746511] [2020-11-22 12:53:43,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:43,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:53:43,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191842272] [2020-11-22 12:53:43,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 12:53:43,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:43,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 12:53:43,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 12:53:43,493 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-11-22 12:53:43,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:43,592 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-11-22 12:53:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:53:43,594 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-22 12:53:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:43,595 INFO L225 Difference]: With dead ends: 163 [2020-11-22 12:53:43,596 INFO L226 Difference]: Without dead ends: 126 [2020-11-22 12:53:43,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:53:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-22 12:53:43,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-11-22 12:53:43,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-11-22 12:53:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-11-22 12:53:43,611 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-11-22 12:53:43,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:43,612 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-11-22 12:53:43,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 12:53:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-11-22 12:53:43,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 12:53:43,615 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:43,616 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:43,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 12:53:43,616 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:43,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:43,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1926964344, now seen corresponding path program 1 times [2020-11-22 12:53:43,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:43,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556121720] [2020-11-22 12:53:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:43,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:43,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556121720] [2020-11-22 12:53:43,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:43,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 12:53:43,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723137666] [2020-11-22 12:53:43,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:53:43,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:43,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:53:43,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:53:43,793 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-11-22 12:53:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:43,907 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-11-22 12:53:43,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 12:53:43,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-22 12:53:43,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:43,909 INFO L225 Difference]: With dead ends: 118 [2020-11-22 12:53:43,909 INFO L226 Difference]: Without dead ends: 108 [2020-11-22 12:53:43,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-22 12:53:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-22 12:53:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-22 12:53:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-22 12:53:43,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-11-22 12:53:43,919 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-11-22 12:53:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:43,920 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-11-22 12:53:43,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:53:43,920 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-11-22 12:53:43,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:53:43,922 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:43,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:43,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 12:53:43,922 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:43,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:43,923 INFO L82 PathProgramCache]: Analyzing trace with hash 337836795, now seen corresponding path program 1 times [2020-11-22 12:53:43,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:43,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369309065] [2020-11-22 12:53:43,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:44,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369309065] [2020-11-22 12:53:44,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:44,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:53:44,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348860001] [2020-11-22 12:53:44,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:53:44,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:44,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:53:44,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:53:44,019 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-11-22 12:53:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:44,046 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-11-22 12:53:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:53:44,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:53:44,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:44,047 INFO L225 Difference]: With dead ends: 133 [2020-11-22 12:53:44,047 INFO L226 Difference]: Without dead ends: 54 [2020-11-22 12:53:44,048 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 [2020-11-22 12:53:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-22 12:53:44,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-22 12:53:44,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-22 12:53:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-11-22 12:53:44,052 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-11-22 12:53:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:44,052 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-11-22 12:53:44,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:53:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-11-22 12:53:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:53:44,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:44,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:44,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 12:53:44,054 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:44,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 64468355, now seen corresponding path program 2 times [2020-11-22 12:53:44,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:44,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50956559] [2020-11-22 12:53:44,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:44,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50956559] [2020-11-22 12:53:44,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:44,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:53:44,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193424951] [2020-11-22 12:53:44,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:53:44,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:44,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:53:44,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:53:44,152 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-11-22 12:53:44,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:44,187 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-11-22 12:53:44,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:53:44,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:53:44,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:44,188 INFO L225 Difference]: With dead ends: 67 [2020-11-22 12:53:44,189 INFO L226 Difference]: Without dead ends: 30 [2020-11-22 12:53:44,189 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 [2020-11-22 12:53:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-22 12:53:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-22 12:53:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-22 12:53:44,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-22 12:53:44,191 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-22 12:53:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:44,191 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-22 12:53:44,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:53:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-22 12:53:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-22 12:53:44,192 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:53:44,192 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:53:44,192 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 12:53:44,192 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:53:44,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:53:44,192 INFO L82 PathProgramCache]: Analyzing trace with hash -339277395, now seen corresponding path program 3 times [2020-11-22 12:53:44,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:53:44,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484444540] [2020-11-22 12:53:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:53:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:53:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:53:44,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484444540] [2020-11-22 12:53:44,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:53:44,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 12:53:44,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754385699] [2020-11-22 12:53:44,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:53:44,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:53:44,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:53:44,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:53:44,243 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-22 12:53:44,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:53:44,262 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-22 12:53:44,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 12:53:44,262 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-22 12:53:44,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:53:44,262 INFO L225 Difference]: With dead ends: 29 [2020-11-22 12:53:44,262 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:53:44,263 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 [2020-11-22 12:53:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:53:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:53:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:53:44,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:53:44,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-22 12:53:44,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:53:44,264 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:53:44,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:53:44,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:53:44,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:53:44,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 12:53:44,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:53:44 BasicIcfg [2020-11-22 12:53:44,269 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:53:44,270 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:53:44,270 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:53:44,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:53:44,271 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:53:39" (3/4) ... [2020-11-22 12:53:44,274 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:53:44,282 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-11-22 12:53:44,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-11-22 12:53:44,283 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-11-22 12:53:44,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-22 12:53:44,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-22 12:53:44,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:53:44,292 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:53:44,358 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_acd79632-4e77-4bb7-a987-31af44a8ed1e/bin/utaipan/witness.graphml [2020-11-22 12:53:44,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:53:44,361 INFO L168 Benchmark]: Toolchain (without parser) took 6698.83 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 79.0 MB in the beginning and 83.8 MB in the end (delta: -4.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:44,361 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 90.5 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:53:44,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 802.24 ms. Allocated memory is still 117.4 MB. Free memory was 79.0 MB in the beginning and 70.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:44,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 117.4 MB. Free memory was 70.3 MB in the beginning and 68.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:44,364 INFO L168 Benchmark]: Boogie Preprocessor took 33.63 ms. Allocated memory is still 117.4 MB. Free memory was 68.3 MB in the beginning and 66.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:44,364 INFO L168 Benchmark]: RCFGBuilder took 647.55 ms. Allocated memory is still 117.4 MB. Free memory was 66.8 MB in the beginning and 45.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:44,365 INFO L168 Benchmark]: TraceAbstraction took 5065.56 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 44.6 MB in the beginning and 86.9 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:53:44,366 INFO L168 Benchmark]: Witness Printer took 89.33 ms. Allocated memory is still 144.7 MB. Free memory was 86.9 MB in the beginning and 83.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:53:44,370 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 90.6 MB in the beginning and 90.5 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 802.24 ms. Allocated memory is still 117.4 MB. Free memory was 79.0 MB in the beginning and 70.3 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.60 ms. Allocated memory is still 117.4 MB. Free memory was 70.3 MB in the beginning and 68.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.63 ms. Allocated memory is still 117.4 MB. Free memory was 68.3 MB in the beginning and 66.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 647.55 ms. Allocated memory is still 117.4 MB. Free memory was 66.8 MB in the beginning and 45.2 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5065.56 ms. Allocated memory was 117.4 MB in the beginning and 144.7 MB in the end (delta: 27.3 MB). Free memory was 44.6 MB in the beginning and 86.9 MB in the end (delta: -42.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 89.33 ms. Allocated memory is still 144.7 MB. Free memory was 86.9 MB in the beginning and 83.8 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 950 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 2 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 71 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.1s, 87 PlacesBefore, 31 PlacesAfterwards, 80 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 75 TotalNumberOfCompositions, 2901 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 4 procedures, 78 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 115 SDtfs, 168 SDslu, 151 SDs, 0 SdLazy, 57 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2874 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...