./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/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 6b3c250012519fd938045a9de2b2041e2cefaa93 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 06:19:35,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 06:19:35,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 06:19:35,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 06:19:35,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 06:19:35,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 06:19:35,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 06:19:35,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 06:19:35,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 06:19:35,772 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 06:19:35,773 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 06:19:35,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 06:19:35,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 06:19:35,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 06:19:35,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 06:19:35,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 06:19:35,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 06:19:35,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 06:19:35,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 06:19:35,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 06:19:35,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 06:19:35,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 06:19:35,790 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 06:19:35,791 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 06:19:35,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 06:19:35,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 06:19:35,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 06:19:35,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 06:19:35,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 06:19:35,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 06:19:35,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 06:19:35,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 06:19:35,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 06:19:35,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 06:19:35,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 06:19:35,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 06:19:35,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 06:19:35,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 06:19:35,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 06:19:35,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 06:19:35,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 06:19:35,805 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 06:19:35,829 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 06:19:35,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 06:19:35,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 06:19:35,830 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 06:19:35,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 06:19:35,830 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 06:19:35,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 06:19:35,831 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 06:19:35,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 06:19:35,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 06:19:35,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 06:19:35,831 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 06:19:35,832 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 06:19:35,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 06:19:35,832 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 06:19:35,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 06:19:35,833 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 06:19:35,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 06:19:35,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 06:19:35,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 06:19:35,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 06:19:35,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 06:19:35,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 06:19:35,834 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 06:19:35,834 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 06:19:35,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 06:19:35,835 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 06:19:35,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 06:19:35,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 06:19:35,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 06:19:35,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 06:19:35,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 06:19:35,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 06:19:35,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 06:19:35,836 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 06:19:35,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 06:19:35,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 06:19:35,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 06:19:35,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 06:19:35,837 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_e7d73a19-63ae-46b1-95b7-cec0b6f80693/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b3c250012519fd938045a9de2b2041e2cefaa93 [2020-12-09 06:19:36,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 06:19:36,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 06:19:36,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 06:19:36,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 06:19:36,025 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 06:19:36,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/../../sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i [2020-12-09 06:19:36,067 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/data/cd8a23935/0be16d84dc8a4baf929c7c5f2df6391e/FLAGda1287718 [2020-12-09 06:19:36,488 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 06:19:36,488 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i [2020-12-09 06:19:36,498 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/data/cd8a23935/0be16d84dc8a4baf929c7c5f2df6391e/FLAGda1287718 [2020-12-09 06:19:36,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/data/cd8a23935/0be16d84dc8a4baf929c7c5f2df6391e [2020-12-09 06:19:36,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 06:19:36,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 06:19:36,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 06:19:36,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 06:19:36,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 06:19:36,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@409c1756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36, skipping insertion in model container [2020-12-09 06:19:36,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 06:19:36,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 06:19:36,681 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i[949,962] [2020-12-09 06:19:36,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:19:36,786 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 06:19:36,795 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/sv-benchmarks/c/pthread-wmm/safe037_pso.opt.i[949,962] [2020-12-09 06:19:36,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 06:19:36,873 INFO L208 MainTranslator]: Completed translation [2020-12-09 06:19:36,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36 WrapperNode [2020-12-09 06:19:36,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 06:19:36,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 06:19:36,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 06:19:36,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 06:19:36,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 06:19:36,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 06:19:36,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 06:19:36,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 06:19:36,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... [2020-12-09 06:19:36,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 06:19:36,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 06:19:36,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 06:19:36,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 06:19:36,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/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 [2020-12-09 06:19:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 06:19:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 06:19:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 06:19:36,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 06:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-09 06:19:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-09 06:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-09 06:19:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-09 06:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-09 06:19:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-09 06:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 06:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 06:19:36,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 06:19:36,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 06:19:36,999 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-09 06:19:37,262 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 06:19:37,262 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 06:19:37,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:19:37 BoogieIcfgContainer [2020-12-09 06:19:37,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 06:19:37,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 06:19:37,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 06:19:37,268 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 06:19:37,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:19:36" (1/3) ... [2020-12-09 06:19:37,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4221640e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:19:37, skipping insertion in model container [2020-12-09 06:19:37,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:19:36" (2/3) ... [2020-12-09 06:19:37,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4221640e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:19:37, skipping insertion in model container [2020-12-09 06:19:37,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:19:37" (3/3) ... [2020-12-09 06:19:37,271 INFO L111 eAbstractionObserver]: Analyzing ICFG safe037_pso.opt.i [2020-12-09 06:19:37,282 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 06:19:37,282 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 06:19:37,285 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 06:19:37,285 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 06:19:37,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,308 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,308 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,308 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,309 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,309 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,310 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,311 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,311 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,312 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,313 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,315 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,315 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,315 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,319 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,319 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,321 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,321 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,321 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 06:19:37,323 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-09 06:19:37,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 06:19:37,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 06:19:37,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 06:19:37,346 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 06:19:37,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 06:19:37,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 06:19:37,346 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 06:19:37,346 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 06:19:37,346 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 06:19:37,355 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 06:19:37,356 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-09 06:19:37,359 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 76 transitions, 167 flow [2020-12-09 06:19:37,360 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 76 transitions, 167 flow [2020-12-09 06:19:37,392 INFO L129 PetriNetUnfolder]: 2/73 cut-off events. [2020-12-09 06:19:37,392 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-12-09 06:19:37,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2020-12-09 06:19:37,398 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2020-12-09 06:19:39,351 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 06:19:39,583 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-12-09 06:19:39,789 INFO L131 LiptonReduction]: Checked pairs total: 2701 [2020-12-09 06:19:39,789 INFO L133 LiptonReduction]: Total number of compositions: 66 [2020-12-09 06:19:39,793 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-12-09 06:19:39,811 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-12-09 06:19:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-12-09 06:19:39,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 06:19:39,816 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:19:39,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:19:39,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:19:39,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:19:39,821 INFO L82 PathProgramCache]: Analyzing trace with hash -747620084, now seen corresponding path program 1 times [2020-12-09 06:19:39,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:19:39,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831052138] [2020-12-09 06:19:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:19:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:19:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:19:39,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831052138] [2020-12-09 06:19:39,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:19:39,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 06:19:39,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378720140] [2020-12-09 06:19:39,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:19:39,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:19:39,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:19:40,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:19:40,001 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 4 states. [2020-12-09 06:19:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:19:40,056 INFO L93 Difference]: Finished difference Result 281 states and 711 transitions. [2020-12-09 06:19:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 06:19:40,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 06:19:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:19:40,066 INFO L225 Difference]: With dead ends: 281 [2020-12-09 06:19:40,066 INFO L226 Difference]: Without dead ends: 180 [2020-12-09 06:19:40,067 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 [2020-12-09 06:19:40,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-09 06:19:40,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-12-09 06:19:40,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-09 06:19:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 440 transitions. [2020-12-09 06:19:40,104 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 440 transitions. Word has length 8 [2020-12-09 06:19:40,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:19:40,104 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 440 transitions. [2020-12-09 06:19:40,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:19:40,105 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 440 transitions. [2020-12-09 06:19:40,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 06:19:40,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:19:40,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:19:40,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 06:19:40,106 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:19:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:19:40,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1314201068, now seen corresponding path program 1 times [2020-12-09 06:19:40,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:19:40,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454080172] [2020-12-09 06:19:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:19:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:19:40,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:19:40,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454080172] [2020-12-09 06:19:40,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:19:40,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:19:40,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791335734] [2020-12-09 06:19:40,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 06:19:40,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:19:40,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 06:19:40,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 06:19:40,170 INFO L87 Difference]: Start difference. First operand 180 states and 440 transitions. Second operand 5 states. [2020-12-09 06:19:40,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:19:40,201 INFO L93 Difference]: Finished difference Result 163 states and 368 transitions. [2020-12-09 06:19:40,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 06:19:40,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-09 06:19:40,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:19:40,202 INFO L225 Difference]: With dead ends: 163 [2020-12-09 06:19:40,202 INFO L226 Difference]: Without dead ends: 126 [2020-12-09 06:19:40,203 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 [2020-12-09 06:19:40,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-09 06:19:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-12-09 06:19:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-09 06:19:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 278 transitions. [2020-12-09 06:19:40,211 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 278 transitions. Word has length 11 [2020-12-09 06:19:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:19:40,211 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 278 transitions. [2020-12-09 06:19:40,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 06:19:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 278 transitions. [2020-12-09 06:19:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 06:19:40,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:19:40,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:19:40,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 06:19:40,213 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:19:40,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:19:40,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2141841880, now seen corresponding path program 1 times [2020-12-09 06:19:40,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:19:40,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621858478] [2020-12-09 06:19:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:19:40,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:19:40,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:19:40,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621858478] [2020-12-09 06:19:40,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:19:40,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 06:19:40,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813187488] [2020-12-09 06:19:40,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 06:19:40,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:19:40,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 06:19:40,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-09 06:19:40,270 INFO L87 Difference]: Start difference. First operand 126 states and 278 transitions. Second operand 6 states. [2020-12-09 06:19:40,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:19:40,304 INFO L93 Difference]: Finished difference Result 118 states and 260 transitions. [2020-12-09 06:19:40,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 06:19:40,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-09 06:19:40,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:19:40,306 INFO L225 Difference]: With dead ends: 118 [2020-12-09 06:19:40,306 INFO L226 Difference]: Without dead ends: 108 [2020-12-09 06:19:40,307 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 [2020-12-09 06:19:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-09 06:19:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-12-09 06:19:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-09 06:19:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 242 transitions. [2020-12-09 06:19:40,315 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 242 transitions. Word has length 14 [2020-12-09 06:19:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:19:40,315 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 242 transitions. [2020-12-09 06:19:40,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 06:19:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 242 transitions. [2020-12-09 06:19:40,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:19:40,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:19:40,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:19:40,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 06:19:40,317 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:19:40,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:19:40,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1562623596, now seen corresponding path program 1 times [2020-12-09 06:19:40,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:19:40,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109237487] [2020-12-09 06:19:40,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:19:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:19:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:19:40,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109237487] [2020-12-09 06:19:40,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:19:40,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:19:40,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451222877] [2020-12-09 06:19:40,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:19:40,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:19:40,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:19:40,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:19:40,377 INFO L87 Difference]: Start difference. First operand 108 states and 242 transitions. Second operand 4 states. [2020-12-09 06:19:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:19:40,391 INFO L93 Difference]: Finished difference Result 133 states and 289 transitions. [2020-12-09 06:19:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:19:40,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 06:19:40,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:19:40,393 INFO L225 Difference]: With dead ends: 133 [2020-12-09 06:19:40,393 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 06:19:40,393 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 [2020-12-09 06:19:40,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 06:19:40,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-09 06:19:40,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-09 06:19:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-12-09 06:19:40,397 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 17 [2020-12-09 06:19:40,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:19:40,397 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-12-09 06:19:40,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:19:40,398 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-12-09 06:19:40,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:19:40,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:19:40,398 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:19:40,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 06:19:40,399 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:19:40,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:19:40,399 INFO L82 PathProgramCache]: Analyzing trace with hash -715459562, now seen corresponding path program 2 times [2020-12-09 06:19:40,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:19:40,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649515898] [2020-12-09 06:19:40,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:19:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:19:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:19:40,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649515898] [2020-12-09 06:19:40,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:19:40,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:19:40,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382435061] [2020-12-09 06:19:40,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:19:40,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:19:40,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:19:40,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:19:40,448 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-12-09 06:19:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:19:40,458 INFO L93 Difference]: Finished difference Result 67 states and 119 transitions. [2020-12-09 06:19:40,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:19:40,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 06:19:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:19:40,459 INFO L225 Difference]: With dead ends: 67 [2020-12-09 06:19:40,459 INFO L226 Difference]: Without dead ends: 30 [2020-12-09 06:19:40,459 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 [2020-12-09 06:19:40,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-09 06:19:40,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-09 06:19:40,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-09 06:19:40,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-09 06:19:40,461 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-12-09 06:19:40,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:19:40,461 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-09 06:19:40,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:19:40,461 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-09 06:19:40,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 06:19:40,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 06:19:40,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 06:19:40,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 06:19:40,462 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 06:19:40,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 06:19:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1352885548, now seen corresponding path program 3 times [2020-12-09 06:19:40,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 06:19:40,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483249894] [2020-12-09 06:19:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 06:19:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 06:19:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 06:19:40,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483249894] [2020-12-09 06:19:40,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 06:19:40,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 06:19:40,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158956074] [2020-12-09 06:19:40,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 06:19:40,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 06:19:40,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 06:19:40,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 06:19:40,495 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-12-09 06:19:40,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 06:19:40,507 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-12-09 06:19:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 06:19:40,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-09 06:19:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 06:19:40,508 INFO L225 Difference]: With dead ends: 29 [2020-12-09 06:19:40,508 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 06:19:40,508 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 [2020-12-09 06:19:40,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 06:19:40,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 06:19:40,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 06:19:40,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 06:19:40,509 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-12-09 06:19:40,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 06:19:40,509 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 06:19:40,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 06:19:40,509 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 06:19:40,509 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 06:19:40,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 06:19:40,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:19:40 BasicIcfg [2020-12-09 06:19:40,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 06:19:40,513 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 06:19:40,513 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 06:19:40,513 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 06:19:40,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:19:37" (3/4) ... [2020-12-09 06:19:40,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 06:19:40,521 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2020-12-09 06:19:40,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2020-12-09 06:19:40,522 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2020-12-09 06:19:40,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 06:19:40,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 06:19:40,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:19:40,527 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 06:19:40,553 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_e7d73a19-63ae-46b1-95b7-cec0b6f80693/bin/utaipan/witness.graphml [2020-12-09 06:19:40,553 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 06:19:40,554 INFO L168 Benchmark]: Toolchain (without parser) took 4038.99 ms. Allocated memory was 94.4 MB in the beginning and 155.2 MB in the end (delta: 60.8 MB). Free memory was 63.6 MB in the beginning and 126.1 MB in the end (delta: -62.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:19:40,555 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:19:40,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.71 ms. Allocated memory is still 94.4 MB. Free memory was 63.3 MB in the beginning and 49.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 06:19:40,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.04 ms. Allocated memory is still 94.4 MB. Free memory was 49.8 MB in the beginning and 48.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:19:40,556 INFO L168 Benchmark]: Boogie Preprocessor took 19.21 ms. Allocated memory is still 94.4 MB. Free memory was 47.7 MB in the beginning and 46.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 06:19:40,556 INFO L168 Benchmark]: RCFGBuilder took 336.54 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 46.6 MB in the beginning and 94.8 MB in the end (delta: -48.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-09 06:19:40,557 INFO L168 Benchmark]: TraceAbstraction took 3247.32 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 94.8 MB in the beginning and 129.3 MB in the end (delta: -34.5 MB). Peak memory consumption was 78.1 MB. Max. memory is 16.1 GB. [2020-12-09 06:19:40,557 INFO L168 Benchmark]: Witness Printer took 40.87 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 126.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 06:19:40,559 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 94.4 MB. Free memory is still 59.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.71 ms. Allocated memory is still 94.4 MB. Free memory was 63.3 MB in the beginning and 49.8 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.04 ms. Allocated memory is still 94.4 MB. Free memory was 49.8 MB in the beginning and 48.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.21 ms. Allocated memory is still 94.4 MB. Free memory was 47.7 MB in the beginning and 46.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 336.54 ms. Allocated memory was 94.4 MB in the beginning and 127.9 MB in the end (delta: 33.6 MB). Free memory was 46.6 MB in the beginning and 94.8 MB in the end (delta: -48.2 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3247.32 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 94.8 MB in the beginning and 129.3 MB in the end (delta: -34.5 MB). Peak memory consumption was 78.1 MB. Max. memory is 16.1 GB. * Witness Printer took 40.87 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 126.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 837 VarBasedMoverChecksPositive, 36 VarBasedMoverChecksNegative, 5 SemBasedMoverChecksPositive, 31 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 61 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 84 PlacesBefore, 31 PlacesAfterwards, 76 TransitionsBefore, 21 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 2701 MoverChecksTotal - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 133 SDtfs, 126 SDslu, 200 SDs, 0 SdLazy, 94 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2802 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...