./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI --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 39038350569cc1983dc9a58167271fc220c66f89 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:24:35,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:24:35,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:24:35,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:24:35,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:24:35,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:24:35,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:24:35,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:24:35,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:24:35,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:24:35,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:24:35,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:24:35,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:24:35,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:24:35,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:24:35,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:24:35,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:24:35,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:24:35,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:24:35,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:24:35,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:24:35,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:24:35,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:24:35,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:24:35,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:24:35,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:24:35,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:24:35,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:24:35,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:24:35,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:24:35,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:24:35,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:24:35,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:24:35,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:24:35,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:24:35,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:24:35,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:24:35,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:24:35,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:24:35,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:24:35,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:24:35,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:24:35,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:24:35,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:24:35,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:24:35,968 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:24:35,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:24:35,969 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:24:35,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:24:35,969 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:24:35,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:24:35,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:24:35,970 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:24:35,970 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:24:35,970 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:24:35,970 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:24:35,971 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:24:35,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:24:35,972 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:24:35,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:24:35,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:24:35,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:24:35,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:24:35,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:24:35,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:24:35,973 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:24:35,974 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:24:35,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:24:35,974 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:24:35,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:24:35,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:24:35,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:24:35,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:24:35,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:24:35,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:24:35,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:24:35,977 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:24:35,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:24:35,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:24:35,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:24:35,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:24:35,979 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_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39038350569cc1983dc9a58167271fc220c66f89 [2021-10-11 02:24:36,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:24:36,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:24:36,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:24:36,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:24:36,381 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:24:36,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c [2021-10-11 02:24:36,451 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/data/80b36b891/9f023f1bcb6d4fe39d5b5c51cddf4a6a/FLAG23a7c9ca3 [2021-10-11 02:24:36,944 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:24:36,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c [2021-10-11 02:24:36,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/data/80b36b891/9f023f1bcb6d4fe39d5b5c51cddf4a6a/FLAG23a7c9ca3 [2021-10-11 02:24:37,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/data/80b36b891/9f023f1bcb6d4fe39d5b5c51cddf4a6a [2021-10-11 02:24:37,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:24:37,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:24:37,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:37,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:24:37,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:24:37,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7000af56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37, skipping insertion in model container [2021-10-11 02:24:37,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:24:37,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:24:37,596 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c[34966,34979] [2021-10-11 02:24:37,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:37,612 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:24:37,695 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/sv-benchmarks/c/openssl-simplified/s3_clnt_1.cil-2.c[34966,34979] [2021-10-11 02:24:37,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:24:37,711 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:24:37,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37 WrapperNode [2021-10-11 02:24:37,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:24:37,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:37,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:24:37,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:24:37,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:24:37,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:24:37,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:24:37,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:24:37,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... [2021-10-11 02:24:37,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:24:37,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:24:37,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:24:37,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:24:37,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:24:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:24:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:24:37,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:24:37,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:24:38,104 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-11 02:24:38,663 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-11 02:24:38,663 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-11 02:24:39,070 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:24:39,072 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:24:39,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39 BoogieIcfgContainer [2021-10-11 02:24:39,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:24:39,077 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:24:39,077 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:24:39,081 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:24:39,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:24:37" (1/3) ... [2021-10-11 02:24:39,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2310675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:39, skipping insertion in model container [2021-10-11 02:24:39,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:24:37" (2/3) ... [2021-10-11 02:24:39,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2310675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:24:39, skipping insertion in model container [2021-10-11 02:24:39,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39" (3/3) ... [2021-10-11 02:24:39,085 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_1.cil-2.c [2021-10-11 02:24:39,103 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:24:39,107 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:24:39,123 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:24:39,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:24:39,148 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:24:39,148 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:24:39,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:24:39,149 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:24:39,149 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:24:39,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:24:39,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:24:39,164 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states. [2021-10-11 02:24:39,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 02:24:39,171 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:39,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:39,172 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:39,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:39,178 INFO L82 PathProgramCache]: Analyzing trace with hash 974095135, now seen corresponding path program 1 times [2021-10-11 02:24:39,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894215583] [2021-10-11 02:24:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:39,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894215583] [2021-10-11 02:24:39,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:39,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:39,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062266899] [2021-10-11 02:24:39,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:39,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:39,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:39,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:39,505 INFO L87 Difference]: Start difference. First operand 84 states. Second operand 3 states. [2021-10-11 02:24:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:39,778 INFO L93 Difference]: Finished difference Result 196 states and 338 transitions. [2021-10-11 02:24:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:39,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2021-10-11 02:24:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:39,804 INFO L225 Difference]: With dead ends: 196 [2021-10-11 02:24:39,804 INFO L226 Difference]: Without dead ends: 107 [2021-10-11 02:24:39,818 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 [2021-10-11 02:24:39,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-10-11 02:24:39,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2021-10-11 02:24:39,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2021-10-11 02:24:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 155 transitions. [2021-10-11 02:24:39,879 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 155 transitions. Word has length 19 [2021-10-11 02:24:39,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:39,881 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 155 transitions. [2021-10-11 02:24:39,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:39,881 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 155 transitions. [2021-10-11 02:24:39,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 02:24:39,884 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:39,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:39,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:24:39,885 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:39,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:39,888 INFO L82 PathProgramCache]: Analyzing trace with hash 127670874, now seen corresponding path program 1 times [2021-10-11 02:24:39,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:39,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545088743] [2021-10-11 02:24:39,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:40,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545088743] [2021-10-11 02:24:40,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:40,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484869437] [2021-10-11 02:24:40,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:40,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:40,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:40,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:40,008 INFO L87 Difference]: Start difference. First operand 102 states and 155 transitions. Second operand 3 states. [2021-10-11 02:24:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,196 INFO L93 Difference]: Finished difference Result 230 states and 354 transitions. [2021-10-11 02:24:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:40,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-10-11 02:24:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,199 INFO L225 Difference]: With dead ends: 230 [2021-10-11 02:24:40,199 INFO L226 Difference]: Without dead ends: 129 [2021-10-11 02:24:40,200 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 [2021-10-11 02:24:40,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-10-11 02:24:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2021-10-11 02:24:40,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2021-10-11 02:24:40,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 194 transitions. [2021-10-11 02:24:40,211 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 194 transitions. Word has length 20 [2021-10-11 02:24:40,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,212 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 194 transitions. [2021-10-11 02:24:40,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:40,212 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 194 transitions. [2021-10-11 02:24:40,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-11 02:24:40,214 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,214 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:40,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:24:40,215 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash -722663545, now seen corresponding path program 1 times [2021-10-11 02:24:40,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:40,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848434030] [2021-10-11 02:24:40,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:40,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848434030] [2021-10-11 02:24:40,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:40,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908602189] [2021-10-11 02:24:40,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:40,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:40,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:40,299 INFO L87 Difference]: Start difference. First operand 124 states and 194 transitions. Second operand 3 states. [2021-10-11 02:24:40,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,451 INFO L93 Difference]: Finished difference Result 268 states and 423 transitions. [2021-10-11 02:24:40,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:40,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2021-10-11 02:24:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,459 INFO L225 Difference]: With dead ends: 268 [2021-10-11 02:24:40,459 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:24:40,464 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 [2021-10-11 02:24:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:24:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-10-11 02:24:40,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-10-11 02:24:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 226 transitions. [2021-10-11 02:24:40,481 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 226 transitions. Word has length 37 [2021-10-11 02:24:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,482 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 226 transitions. [2021-10-11 02:24:40,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:40,482 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 226 transitions. [2021-10-11 02:24:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-11 02:24:40,490 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:40,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:24:40,491 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1445870942, now seen corresponding path program 1 times [2021-10-11 02:24:40,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:40,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665752955] [2021-10-11 02:24:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:40,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665752955] [2021-10-11 02:24:40,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:40,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282123537] [2021-10-11 02:24:40,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:40,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:40,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:40,593 INFO L87 Difference]: Start difference. First operand 143 states and 226 transitions. Second operand 3 states. [2021-10-11 02:24:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:40,747 INFO L93 Difference]: Finished difference Result 287 states and 453 transitions. [2021-10-11 02:24:40,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:40,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-10-11 02:24:40,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:40,751 INFO L225 Difference]: With dead ends: 287 [2021-10-11 02:24:40,751 INFO L226 Difference]: Without dead ends: 145 [2021-10-11 02:24:40,753 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 [2021-10-11 02:24:40,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-11 02:24:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2021-10-11 02:24:40,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2021-10-11 02:24:40,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 224 transitions. [2021-10-11 02:24:40,780 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 224 transitions. Word has length 38 [2021-10-11 02:24:40,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:40,780 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 224 transitions. [2021-10-11 02:24:40,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:40,781 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 224 transitions. [2021-10-11 02:24:40,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-11 02:24:40,783 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:40,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:40,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:24:40,783 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:40,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:40,784 INFO L82 PathProgramCache]: Analyzing trace with hash -590919311, now seen corresponding path program 1 times [2021-10-11 02:24:40,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:40,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809136414] [2021-10-11 02:24:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-11 02:24:40,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809136414] [2021-10-11 02:24:40,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:40,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:40,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734642591] [2021-10-11 02:24:40,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:40,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:40,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:40,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:40,871 INFO L87 Difference]: Start difference. First operand 143 states and 224 transitions. Second operand 3 states. [2021-10-11 02:24:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,027 INFO L93 Difference]: Finished difference Result 305 states and 481 transitions. [2021-10-11 02:24:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:41,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2021-10-11 02:24:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,030 INFO L225 Difference]: With dead ends: 305 [2021-10-11 02:24:41,030 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:24:41,031 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 [2021-10-11 02:24:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:24:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2021-10-11 02:24:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-10-11 02:24:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 251 transitions. [2021-10-11 02:24:41,055 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 251 transitions. Word has length 52 [2021-10-11 02:24:41,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,055 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 251 transitions. [2021-10-11 02:24:41,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 251 transitions. [2021-10-11 02:24:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-11 02:24:41,063 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,063 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:41,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:24:41,063 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,064 INFO L82 PathProgramCache]: Analyzing trace with hash -633533354, now seen corresponding path program 1 times [2021-10-11 02:24:41,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704144684] [2021-10-11 02:24:41,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,127 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-11 02:24:41,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704144684] [2021-10-11 02:24:41,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:41,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937297132] [2021-10-11 02:24:41,128 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:41,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:41,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:41,132 INFO L87 Difference]: Start difference. First operand 160 states and 251 transitions. Second operand 3 states. [2021-10-11 02:24:41,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,280 INFO L93 Difference]: Finished difference Result 322 states and 505 transitions. [2021-10-11 02:24:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:41,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2021-10-11 02:24:41,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,282 INFO L225 Difference]: With dead ends: 322 [2021-10-11 02:24:41,283 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:24:41,283 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 [2021-10-11 02:24:41,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:24:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2021-10-11 02:24:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2021-10-11 02:24:41,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 248 transitions. [2021-10-11 02:24:41,302 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 248 transitions. Word has length 53 [2021-10-11 02:24:41,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,303 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 248 transitions. [2021-10-11 02:24:41,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:41,304 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 248 transitions. [2021-10-11 02:24:41,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-11 02:24:41,306 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:41,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-11 02:24:41,307 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1842641970, now seen corresponding path program 1 times [2021-10-11 02:24:41,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93465722] [2021-10-11 02:24:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:24:41,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93465722] [2021-10-11 02:24:41,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:41,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429062134] [2021-10-11 02:24:41,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:41,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:41,381 INFO L87 Difference]: Start difference. First operand 160 states and 248 transitions. Second operand 3 states. [2021-10-11 02:24:41,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,565 INFO L93 Difference]: Finished difference Result 358 states and 562 transitions. [2021-10-11 02:24:41,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:41,565 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2021-10-11 02:24:41,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,568 INFO L225 Difference]: With dead ends: 358 [2021-10-11 02:24:41,568 INFO L226 Difference]: Without dead ends: 198 [2021-10-11 02:24:41,569 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 [2021-10-11 02:24:41,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-10-11 02:24:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-10-11 02:24:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-10-11 02:24:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 313 transitions. [2021-10-11 02:24:41,578 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 313 transitions. Word has length 56 [2021-10-11 02:24:41,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,579 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 313 transitions. [2021-10-11 02:24:41,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:41,579 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 313 transitions. [2021-10-11 02:24:41,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-11 02:24:41,580 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,581 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:41,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:24:41,581 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1726474027, now seen corresponding path program 1 times [2021-10-11 02:24:41,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150623507] [2021-10-11 02:24:41,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:24:41,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150623507] [2021-10-11 02:24:41,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:41,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629754948] [2021-10-11 02:24:41,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:41,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:41,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:41,644 INFO L87 Difference]: Start difference. First operand 198 states and 313 transitions. Second operand 3 states. [2021-10-11 02:24:41,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,787 INFO L93 Difference]: Finished difference Result 412 states and 653 transitions. [2021-10-11 02:24:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:41,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2021-10-11 02:24:41,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,790 INFO L225 Difference]: With dead ends: 412 [2021-10-11 02:24:41,790 INFO L226 Difference]: Without dead ends: 215 [2021-10-11 02:24:41,791 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 [2021-10-11 02:24:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-11 02:24:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2021-10-11 02:24:41,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-10-11 02:24:41,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 334 transitions. [2021-10-11 02:24:41,800 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 334 transitions. Word has length 65 [2021-10-11 02:24:41,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,801 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 334 transitions. [2021-10-11 02:24:41,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:41,801 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 334 transitions. [2021-10-11 02:24:41,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-11 02:24:41,802 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:41,802 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:41,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:24:41,803 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:41,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:41,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1362899280, now seen corresponding path program 1 times [2021-10-11 02:24:41,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:41,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098003035] [2021-10-11 02:24:41,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-11 02:24:41,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098003035] [2021-10-11 02:24:41,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:41,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:41,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314941176] [2021-10-11 02:24:41,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:41,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:41,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:41,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:41,838 INFO L87 Difference]: Start difference. First operand 213 states and 334 transitions. Second operand 3 states. [2021-10-11 02:24:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:41,980 INFO L93 Difference]: Finished difference Result 427 states and 669 transitions. [2021-10-11 02:24:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:41,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2021-10-11 02:24:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:41,983 INFO L225 Difference]: With dead ends: 427 [2021-10-11 02:24:41,983 INFO L226 Difference]: Without dead ends: 215 [2021-10-11 02:24:41,984 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 [2021-10-11 02:24:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-11 02:24:41,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 213. [2021-10-11 02:24:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-10-11 02:24:41,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 329 transitions. [2021-10-11 02:24:41,997 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 329 transitions. Word has length 66 [2021-10-11 02:24:41,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:41,997 INFO L481 AbstractCegarLoop]: Abstraction has 213 states and 329 transitions. [2021-10-11 02:24:41,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:41,997 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 329 transitions. [2021-10-11 02:24:41,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-10-11 02:24:41,999 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,000 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:24:42,000 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1715660304, now seen corresponding path program 1 times [2021-10-11 02:24:42,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282017958] [2021-10-11 02:24:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:24:42,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282017958] [2021-10-11 02:24:42,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:42,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558312886] [2021-10-11 02:24:42,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:42,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:42,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:42,046 INFO L87 Difference]: Start difference. First operand 213 states and 329 transitions. Second operand 3 states. [2021-10-11 02:24:42,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,177 INFO L93 Difference]: Finished difference Result 440 states and 681 transitions. [2021-10-11 02:24:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:42,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2021-10-11 02:24:42,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,179 INFO L225 Difference]: With dead ends: 440 [2021-10-11 02:24:42,179 INFO L226 Difference]: Without dead ends: 228 [2021-10-11 02:24:42,180 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 [2021-10-11 02:24:42,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-11 02:24:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2021-10-11 02:24:42,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-10-11 02:24:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 345 transitions. [2021-10-11 02:24:42,190 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 345 transitions. Word has length 76 [2021-10-11 02:24:42,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,191 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 345 transitions. [2021-10-11 02:24:42,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:42,191 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 345 transitions. [2021-10-11 02:24:42,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-11 02:24:42,192 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,193 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-11 02:24:42,193 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,194 INFO L82 PathProgramCache]: Analyzing trace with hash 2108633269, now seen corresponding path program 1 times [2021-10-11 02:24:42,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126338081] [2021-10-11 02:24:42,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-10-11 02:24:42,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126338081] [2021-10-11 02:24:42,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:24:42,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:24:42,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042110260] [2021-10-11 02:24:42,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:24:42,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:42,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:24:42,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:24:42,225 INFO L87 Difference]: Start difference. First operand 226 states and 345 transitions. Second operand 3 states. [2021-10-11 02:24:42,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:42,349 INFO L93 Difference]: Finished difference Result 453 states and 691 transitions. [2021-10-11 02:24:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:24:42,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2021-10-11 02:24:42,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:42,351 INFO L225 Difference]: With dead ends: 453 [2021-10-11 02:24:42,352 INFO L226 Difference]: Without dead ends: 228 [2021-10-11 02:24:42,352 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 [2021-10-11 02:24:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-11 02:24:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2021-10-11 02:24:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2021-10-11 02:24:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 339 transitions. [2021-10-11 02:24:42,363 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 339 transitions. Word has length 77 [2021-10-11 02:24:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:42,364 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 339 transitions. [2021-10-11 02:24:42,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:24:42,364 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 339 transitions. [2021-10-11 02:24:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-11 02:24:42,365 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:42,366 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:42,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-11 02:24:42,366 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash -684184935, now seen corresponding path program 1 times [2021-10-11 02:24:42,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:42,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546734608] [2021-10-11 02:24:42,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,446 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:24:42,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546734608] [2021-10-11 02:24:42,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431374354] [2021-10-11 02:24:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:24:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:24:42,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:24:42,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:24:42,755 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-10-11 02:24:42,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:24:42,804 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:24:42,805 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:24:42,910 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:24:42,910 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:24:42,947 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:24:42,947 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:24:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-10-11 02:24:43,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [612133420] [2021-10-11 02:24:43,041 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-10-11 02:24:43,041 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:24:43,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:24:43,054 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:24:43,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:24:43,579 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 203 [2021-10-11 02:24:43,900 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2021-10-11 02:24:44,274 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2021-10-11 02:24:45,151 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2021-10-11 02:24:45,323 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 199 [2021-10-11 02:24:46,073 WARN L197 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 242 [2021-10-11 02:24:46,566 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 207 [2021-10-11 02:24:46,762 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-10-11 02:24:46,983 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2021-10-11 02:24:47,653 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 239 [2021-10-11 02:24:47,860 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 244 [2021-10-11 02:24:48,437 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 239 [2021-10-11 02:24:50,127 FATAL L? ?]: Ignoring exception! java.util.ConcurrentModificationException at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1134) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-11 02:24:50,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:24:50,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 6 [2021-10-11 02:24:50,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73328574] [2021-10-11 02:24:50,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:24:50,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:24:50,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:24:50,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:50,132 INFO L87 Difference]: Start difference. First operand 226 states and 339 transitions. Second operand 7 states. [2021-10-11 02:24:50,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:24:50,273 INFO L93 Difference]: Finished difference Result 1062 states and 1603 transitions. [2021-10-11 02:24:50,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:24:50,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2021-10-11 02:24:50,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:24:50,281 INFO L225 Difference]: With dead ends: 1062 [2021-10-11 02:24:50,282 INFO L226 Difference]: Without dead ends: 1060 [2021-10-11 02:24:50,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:24:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2021-10-11 02:24:50,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 1057. [2021-10-11 02:24:50,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2021-10-11 02:24:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1595 transitions. [2021-10-11 02:24:50,339 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1595 transitions. Word has length 85 [2021-10-11 02:24:50,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:24:50,340 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1595 transitions. [2021-10-11 02:24:50,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:24:50,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1595 transitions. [2021-10-11 02:24:50,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-10-11 02:24:50,342 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:24:50,343 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:24:50,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-11 02:24:50,571 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:24:50,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:24:50,572 INFO L82 PathProgramCache]: Analyzing trace with hash -755864805, now seen corresponding path program 1 times [2021-10-11 02:24:50,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:24:50,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205897394] [2021-10-11 02:24:50,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:24:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:50,606 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:24:50,656 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:24:50,727 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:24:50,728 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:24:50,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-10-11 02:24:50,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:24:50 BoogieIcfgContainer [2021-10-11 02:24:50,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:24:50,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:24:50,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:24:50,859 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:24:50,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:24:39" (3/4) ... [2021-10-11 02:24:50,861 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:24:50,984 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62406e54-5c15-4529-b0bd-4845b11b79cc/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:24:50,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:24:50,986 INFO L168 Benchmark]: Toolchain (without parser) took 13684.21 ms. Allocated memory was 96.5 MB in the beginning and 413.1 MB in the end (delta: 316.7 MB). Free memory was 59.2 MB in the beginning and 342.8 MB in the end (delta: -283.6 MB). Peak memory consumption was 33.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,986 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:24:50,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.95 ms. Allocated memory is still 96.5 MB. Free memory was 59.0 MB in the beginning and 68.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.06 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 65.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,990 INFO L168 Benchmark]: Boogie Preprocessor took 57.76 ms. Allocated memory is still 96.5 MB. Free memory was 65.6 MB in the beginning and 63.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,990 INFO L168 Benchmark]: RCFGBuilder took 1230.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.5 MB in the beginning and 84.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,991 INFO L168 Benchmark]: TraceAbstraction took 11781.00 ms. Allocated memory was 117.4 MB in the beginning and 413.1 MB in the end (delta: 295.7 MB). Free memory was 83.0 MB in the beginning and 355.4 MB in the end (delta: -272.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,991 INFO L168 Benchmark]: Witness Printer took 125.71 ms. Allocated memory is still 413.1 MB. Free memory was 355.4 MB in the beginning and 342.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:24:50,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 96.5 MB. Free memory is still 75.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 409.95 ms. Allocated memory is still 96.5 MB. Free memory was 59.0 MB in the beginning and 68.4 MB in the end (delta: -9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.06 ms. Allocated memory is still 96.5 MB. Free memory was 68.4 MB in the beginning and 65.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.76 ms. Allocated memory is still 96.5 MB. Free memory was 65.6 MB in the beginning and 63.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1230.59 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.5 MB in the beginning and 84.1 MB in the end (delta: -20.6 MB). Peak memory consumption was 52.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11781.00 ms. Allocated memory was 117.4 MB in the beginning and 413.1 MB in the end (delta: 295.7 MB). Free memory was 83.0 MB in the beginning and 355.4 MB in the end (delta: -272.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 16.1 GB. * Witness Printer took 125.71 ms. Allocated memory is still 413.1 MB. Free memory was 355.4 MB in the beginning and 342.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 545]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L550] int s ; [L554] s = 12292 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = 1; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L78] s__state = initial_state [L79] blastFlag = 0 [L80] tmp = __VERIFIER_nondet_int() [L81] cb = 0 [L82] ret = -1 [L83] skip = 0 [L84] tmp___0 = 0 [L85] COND FALSE !(s__info_callback != 0) [L88] COND FALSE !(s__ctx__info_callback != 0) [L92] s__in_handshake ++ [L93] COND FALSE !(tmp___1 - 12288) [L99] COND TRUE 1 [L101] state = s__state [L102] COND TRUE s__state == 12292 [L204] s__new_session = 1 [L205] s__state = 4096 [L206] s__ctx__stats__sess_connect_renegotiate ++ [L211] s__server = 0 [L212] COND FALSE !(cb != 0) [L216] __cil_tmp55 = s__version - 65280 [L217] COND FALSE !(__cil_tmp55 != 768) [L222] s__type = 4096 [L223] COND FALSE !(s__init_buf___0 == 0) [L235] COND FALSE !(! tmp___4) [L239] COND FALSE !(! tmp___5) [L243] s__state = 4368 [L244] s__ctx__stats__sess_connect ++ [L245] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND TRUE s__state == 4368 [L249] s__shutdown = 0 [L250] ret = __VERIFIER_nondet_int() [L251] COND TRUE blastFlag == 0 [L252] blastFlag = 1 [L254] COND FALSE !(ret <= 0) [L257] s__state = 4384 [L258] s__init_num = 0 [L259] COND FALSE !(s__bbio != s__wbio) [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND TRUE s__state == 4384 [L265] ret = __VERIFIER_nondet_int() [L266] COND TRUE blastFlag == 1 [L267] blastFlag = 2 [L269] COND FALSE !(ret <= 0) [L272] COND FALSE !(\read(s__hit)) [L275] s__state = 4400 [L277] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND TRUE s__state == 4400 [L281] COND FALSE !(s__s3__tmp__new_cipher__algorithms - 256) [L284] ret = __VERIFIER_nondet_int() [L285] COND TRUE blastFlag == 2 [L286] blastFlag = 3 [L288] COND FALSE !(ret <= 0) [L292] s__state = 4416 [L293] s__init_num = 0 [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND TRUE s__state == 4416 [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 3 [L299] blastFlag = 4 [L301] COND FALSE !(ret <= 0) [L304] s__state = 4432 [L305] s__init_num = 0 [L306] COND FALSE !(! tmp___6) [L517] COND FALSE !(! s__s3__tmp__reuse_message) [L534] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 4096) [L111] COND FALSE !(s__state == 20480) [L114] COND FALSE !(s__state == 4099) [L117] COND FALSE !(s__state == 4368) [L120] COND FALSE !(s__state == 4369) [L123] COND FALSE !(s__state == 4384) [L126] COND FALSE !(s__state == 4385) [L129] COND FALSE !(s__state == 4400) [L132] COND FALSE !(s__state == 4401) [L135] COND FALSE !(s__state == 4416) [L138] COND FALSE !(s__state == 4417) [L141] COND TRUE s__state == 4432 [L313] ret = __VERIFIER_nondet_int() [L314] COND TRUE blastFlag == 4 [L545] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.5s, OverallIterations: 13, TraceHistogramMax: 6, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 958 SDtfs, 1365 SDslu, 1002 SDs, 0 SdLazy, 956 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 177 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1057occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 31 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 800 ConstructedInterpolants, 0 QuantifiedInterpolants, 141199 SizeOfPredicates, 0 NumberOfNonLiveVariables, 259 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 14 InterpolantComputations, 11 PerfectInterpolantSequences, 621/825 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 incorrect! Received shutdown request...