./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson.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_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson.i -s /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/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 997418c6caa3dfe6137e5cc9e02fb9342381aa72 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:08:03,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 10:08:03,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 10:08:03,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 10:08:03,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 10:08:03,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 10:08:03,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 10:08:03,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 10:08:03,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 10:08:03,880 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 10:08:03,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 10:08:03,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 10:08:03,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 10:08:03,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 10:08:03,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 10:08:03,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 10:08:03,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 10:08:03,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 10:08:03,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 10:08:03,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 10:08:03,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 10:08:03,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 10:08:03,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 10:08:03,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 10:08:03,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 10:08:03,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 10:08:03,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 10:08:03,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 10:08:03,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 10:08:03,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 10:08:03,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 10:08:03,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 10:08:03,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 10:08:03,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 10:08:03,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 10:08:03,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 10:08:03,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 10:08:03,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 10:08:03,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 10:08:03,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 10:08:03,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 10:08:03,909 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 10:08:03,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 10:08:03,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 10:08:03,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 10:08:03,928 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 10:08:03,928 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 10:08:03,928 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 10:08:03,928 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 10:08:03,928 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 10:08:03,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 10:08:03,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 10:08:03,929 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 10:08:03,929 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 10:08:03,929 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 10:08:03,929 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 10:08:03,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 10:08:03,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 10:08:03,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 10:08:03,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 10:08:03,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 10:08:03,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 10:08:03,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 10:08:03,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 10:08:03,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 10:08:03,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 10:08:03,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 10:08:03,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 10:08:03,932 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_43fb76c2-48d2-4594-a67f-3d141bad0eb9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 997418c6caa3dfe6137e5cc9e02fb9342381aa72 [2020-12-09 10:08:04,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 10:08:04,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 10:08:04,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 10:08:04,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 10:08:04,136 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 10:08:04,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/peterson.i [2020-12-09 10:08:04,182 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/data/19c2ad4b9/942476297a7749ffaf6ffefc72ad5e5a/FLAGef818e390 [2020-12-09 10:08:04,594 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 10:08:04,594 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/sv-benchmarks/c/pthread-atomic/peterson.i [2020-12-09 10:08:04,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/data/19c2ad4b9/942476297a7749ffaf6ffefc72ad5e5a/FLAGef818e390 [2020-12-09 10:08:04,616 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/data/19c2ad4b9/942476297a7749ffaf6ffefc72ad5e5a [2020-12-09 10:08:04,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 10:08:04,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 10:08:04,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 10:08:04,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 10:08:04,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 10:08:04,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e3b360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04, skipping insertion in model container [2020-12-09 10:08:04,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 10:08:04,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 10:08:04,778 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-09 10:08:04,862 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_43fb76c2-48d2-4594-a67f-3d141bad0eb9/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2020-12-09 10:08:04,866 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_43fb76c2-48d2-4594-a67f-3d141bad0eb9/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2020-12-09 10:08:04,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:08:04,875 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 10:08:04,886 WARN L612 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2020-12-09 10:08:04,901 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_43fb76c2-48d2-4594-a67f-3d141bad0eb9/sv-benchmarks/c/pthread-atomic/peterson.i[30997,31010] [2020-12-09 10:08:04,903 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_43fb76c2-48d2-4594-a67f-3d141bad0eb9/sv-benchmarks/c/pthread-atomic/peterson.i[31682,31695] [2020-12-09 10:08:04,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 10:08:04,957 INFO L208 MainTranslator]: Completed translation [2020-12-09 10:08:04,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04 WrapperNode [2020-12-09 10:08:04,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 10:08:04,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 10:08:04,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 10:08:04,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 10:08:04,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 10:08:04,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 10:08:04,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 10:08:04,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 10:08:04,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:04,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:05,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:05,003 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:05,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... [2020-12-09 10:08:05,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 10:08:05,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 10:08:05,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 10:08:05,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 10:08:05,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/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 10:08:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 10:08:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-12-09 10:08:05,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-12-09 10:08:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-12-09 10:08:05,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-12-09 10:08:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 10:08:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-09 10:08:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 10:08:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 10:08:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 10:08:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-09 10:08:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 10:08:05,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 10:08:05,074 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 10:08:05,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 10:08:05,314 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2020-12-09 10:08:05,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:08:05 BoogieIcfgContainer [2020-12-09 10:08:05,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 10:08:05,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 10:08:05,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 10:08:05,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 10:08:05,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 10:08:04" (1/3) ... [2020-12-09 10:08:05,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c121ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:08:05, skipping insertion in model container [2020-12-09 10:08:05,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 10:08:04" (2/3) ... [2020-12-09 10:08:05,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c121ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 10:08:05, skipping insertion in model container [2020-12-09 10:08:05,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:08:05" (3/3) ... [2020-12-09 10:08:05,324 INFO L111 eAbstractionObserver]: Analyzing ICFG peterson.i [2020-12-09 10:08:05,337 WARN L169 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-09 10:08:05,337 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 10:08:05,341 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 10:08:05,341 INFO L354 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-09 10:08:05,366 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,366 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,366 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,366 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,367 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,367 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,367 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,368 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,369 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,370 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,371 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,371 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,371 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,371 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,372 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,372 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,373 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,373 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,374 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,375 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,376 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,377 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,379 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,379 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~f21~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,380 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~t1~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,380 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t2~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,384 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,385 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,385 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~f12~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,385 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-09 10:08:05,391 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-12-09 10:08:05,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 10:08:05,417 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 10:08:05,417 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 10:08:05,417 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 10:08:05,417 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 10:08:05,417 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 10:08:05,417 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 10:08:05,417 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 10:08:05,417 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 10:08:05,426 INFO L120 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-12-09 10:08:05,428 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 74 transitions, 170 flow [2020-12-09 10:08:05,430 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 74 transitions, 170 flow [2020-12-09 10:08:05,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 73 places, 74 transitions, 170 flow [2020-12-09 10:08:05,461 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-12-09 10:08:05,462 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-12-09 10:08:05,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 74 events. 7/74 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 47. Up to 3 conditions per place. [2020-12-09 10:08:05,469 INFO L116 LiptonReduction]: Number of co-enabled transitions 1116 [2020-12-09 10:08:06,959 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-09 10:08:07,197 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2020-12-09 10:08:07,275 INFO L131 LiptonReduction]: Checked pairs total: 3982 [2020-12-09 10:08:07,275 INFO L133 LiptonReduction]: Total number of compositions: 47 [2020-12-09 10:08:07,279 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 36 transitions, 94 flow [2020-12-09 10:08:07,293 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 285 states. [2020-12-09 10:08:07,294 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2020-12-09 10:08:07,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 10:08:07,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:07,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:07,298 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:07,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:07,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1938310971, now seen corresponding path program 1 times [2020-12-09 10:08:07,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:07,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227270841] [2020-12-09 10:08:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:07,436 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 10:08:07,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227270841] [2020-12-09 10:08:07,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:07,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:08:07,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681806371] [2020-12-09 10:08:07,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:07,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:07,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:07,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:07,450 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2020-12-09 10:08:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:07,484 INFO L93 Difference]: Finished difference Result 319 states and 694 transitions. [2020-12-09 10:08:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:07,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 10:08:07,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:07,494 INFO L225 Difference]: With dead ends: 319 [2020-12-09 10:08:07,494 INFO L226 Difference]: Without dead ends: 224 [2020-12-09 10:08:07,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-09 10:08:07,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 210. [2020-12-09 10:08:07,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-09 10:08:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 481 transitions. [2020-12-09 10:08:07,533 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 481 transitions. Word has length 8 [2020-12-09 10:08:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:07,533 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 481 transitions. [2020-12-09 10:08:07,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:07,534 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 481 transitions. [2020-12-09 10:08:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 10:08:07,535 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:07,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:07,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 10:08:07,535 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:07,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1207543750, now seen corresponding path program 1 times [2020-12-09 10:08:07,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:07,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555225957] [2020-12-09 10:08:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:07,581 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 10:08:07,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555225957] [2020-12-09 10:08:07,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:07,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 10:08:07,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131981554] [2020-12-09 10:08:07,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 10:08:07,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:07,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 10:08:07,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:07,584 INFO L87 Difference]: Start difference. First operand 210 states and 481 transitions. Second operand 3 states. [2020-12-09 10:08:07,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:07,599 INFO L93 Difference]: Finished difference Result 201 states and 446 transitions. [2020-12-09 10:08:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 10:08:07,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 10:08:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:07,601 INFO L225 Difference]: With dead ends: 201 [2020-12-09 10:08:07,601 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 10:08:07,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 10:08:07,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 10:08:07,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2020-12-09 10:08:07,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-09 10:08:07,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 328 transitions. [2020-12-09 10:08:07,611 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 328 transitions. Word has length 10 [2020-12-09 10:08:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:07,611 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 328 transitions. [2020-12-09 10:08:07,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 10:08:07,612 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 328 transitions. [2020-12-09 10:08:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 10:08:07,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:07,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:07,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 10:08:07,613 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1030642209, now seen corresponding path program 1 times [2020-12-09 10:08:07,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:07,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702363515] [2020-12-09 10:08:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:07,668 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 10:08:07,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702363515] [2020-12-09 10:08:07,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:07,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:08:07,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410411899] [2020-12-09 10:08:07,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:08:07,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:07,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:08:07,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:08:07,669 INFO L87 Difference]: Start difference. First operand 148 states and 328 transitions. Second operand 6 states. [2020-12-09 10:08:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:07,755 INFO L93 Difference]: Finished difference Result 218 states and 503 transitions. [2020-12-09 10:08:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 10:08:07,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 10:08:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:07,757 INFO L225 Difference]: With dead ends: 218 [2020-12-09 10:08:07,757 INFO L226 Difference]: Without dead ends: 158 [2020-12-09 10:08:07,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 10:08:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-09 10:08:07,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 146. [2020-12-09 10:08:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-12-09 10:08:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 319 transitions. [2020-12-09 10:08:07,765 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 319 transitions. Word has length 15 [2020-12-09 10:08:07,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:07,765 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 319 transitions. [2020-12-09 10:08:07,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:08:07,765 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 319 transitions. [2020-12-09 10:08:07,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 10:08:07,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 10:08:07,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 10:08:07,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 10:08:07,767 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 10:08:07,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 10:08:07,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1089270781, now seen corresponding path program 2 times [2020-12-09 10:08:07,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 10:08:07,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694325076] [2020-12-09 10:08:07,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 10:08:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 10:08:07,823 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 10:08:07,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694325076] [2020-12-09 10:08:07,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 10:08:07,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 10:08:07,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137500767] [2020-12-09 10:08:07,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 10:08:07,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 10:08:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 10:08:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 10:08:07,825 INFO L87 Difference]: Start difference. First operand 146 states and 319 transitions. Second operand 6 states. [2020-12-09 10:08:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:08:07,863 INFO L93 Difference]: Finished difference Result 100 states and 236 transitions. [2020-12-09 10:08:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 10:08:07,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 10:08:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:08:07,864 INFO L225 Difference]: With dead ends: 100 [2020-12-09 10:08:07,864 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:08:07,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-09 10:08:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:08:07,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:08:07,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:08:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:08:07,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-12-09 10:08:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:08:07,865 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:08:07,865 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 10:08:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:08:07,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:08:07,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 10:08:07,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 10:08:07 BasicIcfg [2020-12-09 10:08:07,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 10:08:07,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 10:08:07,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 10:08:07,867 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 10:08:07,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 10:08:05" (3/4) ... [2020-12-09 10:08:07,870 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 10:08:07,874 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2020-12-09 10:08:07,874 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2020-12-09 10:08:07,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-09 10:08:07,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 10:08:07,876 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:08:07,877 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 10:08:07,910 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_43fb76c2-48d2-4594-a67f-3d141bad0eb9/bin/utaipan/witness.graphml [2020-12-09 10:08:07,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 10:08:07,911 INFO L168 Benchmark]: Toolchain (without parser) took 3291.08 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 89.0 MB in the beginning and 120.6 MB in the end (delta: -31.5 MB). Peak memory consumption was 29.6 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:07,912 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:08:07,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.05 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 58.9 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:07,913 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.20 ms. Allocated memory is still 119.5 MB. Free memory was 58.8 MB in the beginning and 57.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:07,913 INFO L168 Benchmark]: Boogie Preprocessor took 20.21 ms. Allocated memory is still 119.5 MB. Free memory was 57.0 MB in the beginning and 55.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:08:07,914 INFO L168 Benchmark]: RCFGBuilder took 308.57 ms. Allocated memory is still 119.5 MB. Free memory was 55.7 MB in the beginning and 77.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:07,914 INFO L168 Benchmark]: TraceAbstraction took 2549.58 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 76.8 MB in the beginning and 90.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:07,915 INFO L168 Benchmark]: Witness Printer took 43.11 ms. Allocated memory is still 144.7 MB. Free memory was 90.0 MB in the beginning and 120.6 MB in the end (delta: -30.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 10:08:07,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 73.4 MB. Free memory was 39.1 MB in the beginning and 39.1 MB in the end (delta: 56.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.05 ms. Allocated memory is still 119.5 MB. Free memory was 88.8 MB in the beginning and 58.9 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.20 ms. Allocated memory is still 119.5 MB. Free memory was 58.8 MB in the beginning and 57.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.21 ms. Allocated memory is still 119.5 MB. Free memory was 57.0 MB in the beginning and 55.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 308.57 ms. Allocated memory is still 119.5 MB. Free memory was 55.7 MB in the beginning and 77.6 MB in the end (delta: -22.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2549.58 ms. Allocated memory was 119.5 MB in the beginning and 144.7 MB in the end (delta: 25.2 MB). Free memory was 76.8 MB in the beginning and 90.0 MB in the end (delta: -13.2 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 43.11 ms. Allocated memory is still 144.7 MB. Free memory was 90.0 MB in the beginning and 120.6 MB in the end (delta: -30.6 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 789 VarBasedMoverChecksPositive, 47 VarBasedMoverChecksNegative, 11 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 258 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.8s, 73 PlacesBefore, 38 PlacesAfterwards, 74 TransitionsBefore, 36 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 3 ChoiceCompositions, 47 TotalNumberOfCompositions, 3982 MoverChecksTotal - PositiveResult [Line: 753]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 725]: 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 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 154 SDtfs, 121 SDslu, 181 SDs, 0 SdLazy, 112 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred 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, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1450 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...