./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6295d007fd73e68ecc4d2723d0cfa636974ad3ae .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6295d007fd73e68ecc4d2723d0cfa636974ad3ae ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:31:33,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:31:33,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:31:33,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:31:33,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:31:33,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:31:33,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:31:34,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:31:34,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:31:34,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:31:34,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:31:34,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:31:34,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:31:34,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:31:34,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:31:34,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:31:34,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:31:34,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:31:34,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:31:34,039 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:31:34,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:31:34,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:31:34,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:31:34,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:31:34,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:31:34,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:31:34,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:31:34,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:31:34,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:31:34,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:31:34,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:31:34,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:31:34,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:31:34,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:31:34,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:31:34,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:31:34,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:31:34,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:31:34,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:31:34,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:31:34,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:31:34,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:31:34,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:31:34,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:31:34,139 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:31:34,139 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:31:34,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:31:34,140 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:31:34,140 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:31:34,140 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:31:34,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:31:34,141 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:31:34,141 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:31:34,142 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:31:34,142 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:31:34,142 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:31:34,143 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:31:34,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:31:34,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:31:34,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:31:34,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:31:34,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:31:34,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:31:34,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:31:34,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:31:34,146 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:31:34,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:31:34,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:31:34,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:31:34,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:31:34,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:31:34,148 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:31:34,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:31:34,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:31:34,149 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:31:34,149 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:31:34,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:31:34,149 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:31:34,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:31:34,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:31:34,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:31:34,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:31:34,151 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6295d007fd73e68ecc4d2723d0cfa636974ad3ae [2020-11-30 03:31:34,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:31:34,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:31:34,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:31:34,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:31:34,529 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:31:34,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i [2020-11-30 03:31:34,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/92552b943/4a26c17d6b1447eeb8090b63ad43348a/FLAGe008cdd03 [2020-11-30 03:31:35,139 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:31:35,140 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i [2020-11-30 03:31:35,156 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/92552b943/4a26c17d6b1447eeb8090b63ad43348a/FLAGe008cdd03 [2020-11-30 03:31:35,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/92552b943/4a26c17d6b1447eeb8090b63ad43348a [2020-11-30 03:31:35,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:31:35,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:31:35,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:31:35,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:31:35,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:31:35,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27779ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35, skipping insertion in model container [2020-11-30 03:31:35,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:31:35,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:31:35,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:31:35,839 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:31:35,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:31:35,879 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:31:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35 WrapperNode [2020-11-30 03:31:35,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:31:35,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:31:35,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:31:35,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:31:35,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,897 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:31:35,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:31:35,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:31:35,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:31:35,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... [2020-11-30 03:31:35,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:31:35,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:31:35,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:31:35,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:31:35,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:31:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:31:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:31:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:31:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:31:36,689 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:31:36,689 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 03:31:36,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:36 BoogieIcfgContainer [2020-11-30 03:31:36,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:31:36,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:31:36,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:31:36,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:31:36,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:31:35" (1/3) ... [2020-11-30 03:31:36,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1980c355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:31:36, skipping insertion in model container [2020-11-30 03:31:36,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:35" (2/3) ... [2020-11-30 03:31:36,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1980c355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:31:36, skipping insertion in model container [2020-11-30 03:31:36,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:36" (3/3) ... [2020-11-30 03:31:36,704 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound10.i [2020-11-30 03:31:36,715 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:31:36,721 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 03:31:36,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 03:31:36,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:31:36,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:31:36,760 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:31:36,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:31:36,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:31:36,761 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:31:36,761 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:31:36,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:31:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 03:31:36,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 03:31:36,784 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:36,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:36,786 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:36,794 INFO L82 PathProgramCache]: Analyzing trace with hash 677699308, now seen corresponding path program 1 times [2020-11-30 03:31:36,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:36,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223911792] [2020-11-30 03:31:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:36,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:36,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223911792] [2020-11-30 03:31:36,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:36,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:31:36,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36918306] [2020-11-30 03:31:36,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:31:36,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:31:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:31:37,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:31:37,025 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 03:31:37,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:37,045 INFO L93 Difference]: Finished difference Result 32 states and 47 transitions. [2020-11-30 03:31:37,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:31:37,046 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 03:31:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:37,057 INFO L225 Difference]: With dead ends: 32 [2020-11-30 03:31:37,057 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 03:31:37,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:31:37,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 03:31:37,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 03:31:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 03:31:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-11-30 03:31:37,101 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 7 [2020-11-30 03:31:37,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:37,102 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-11-30 03:31:37,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:31:37,102 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-11-30 03:31:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:31:37,103 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:37,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:37,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:31:37,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:37,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1361592338, now seen corresponding path program 1 times [2020-11-30 03:31:37,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:37,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523562119] [2020-11-30 03:31:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:37,142 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:31:37,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [667360520] [2020-11-30 03:31:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/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 [2020-11-30 03:31:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:37,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:31:37,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:37,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:37,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:37,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523562119] [2020-11-30 03:31:37,346 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:31:37,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667360520] [2020-11-30 03:31:37,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:37,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 03:31:37,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171127796] [2020-11-30 03:31:37,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:31:37,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:31:37,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:31:37,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:31:37,350 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 6 states. [2020-11-30 03:31:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:37,415 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-11-30 03:31:37,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:31:37,416 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-30 03:31:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:37,417 INFO L225 Difference]: With dead ends: 34 [2020-11-30 03:31:37,417 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 03:31:37,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:31:37,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 03:31:37,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-30 03:31:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-30 03:31:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-11-30 03:31:37,425 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 8 [2020-11-30 03:31:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:37,425 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-11-30 03:31:37,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:31:37,426 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-11-30 03:31:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:31:37,427 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:37,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:37,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 03:31:37,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:37,652 INFO L82 PathProgramCache]: Analyzing trace with hash 770735189, now seen corresponding path program 1 times [2020-11-30 03:31:37,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:37,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144962041] [2020-11-30 03:31:37,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:37,695 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:31:37,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1663145300] [2020-11-30 03:31:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:31:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:37,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:31:37,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:37,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:37,927 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:31:40,015 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (div c_ULTIMATE.start_main_~r~0 4294967296)) (.cse2 (div (+ c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296)) (.cse5 (= c_ULTIMATE.start_main_~q~0 0))) (let ((.cse0 (not .cse5)) (.cse1 (* (mod c_ULTIMATE.start_main_~A~0 4294967296) (- 1))) (.cse3 (<= .cse4 .cse2))) (and (or .cse0 (<= (div (+ .cse1 c_ULTIMATE.start_main_~r~0 (- 1)) 4294967296) .cse2) .cse3) (or .cse0 (<= .cse4 (div (+ .cse1 c_ULTIMATE.start_main_~r~0) 4294967296)) .cse3) (or (forall ((aux_div_ULTIMATE.start_main_~b~0_99 Int) (aux_mod_ULTIMATE.start_main_~b~0_99 Int)) (or (not (= (mod (+ (* aux_div_ULTIMATE.start_main_~b~0_99 4294967296) (* c_ULTIMATE.start_main_~r~0 (- 1)) aux_mod_ULTIMATE.start_main_~b~0_99) c_ULTIMATE.start_main_~q~0) 0)) (< aux_mod_ULTIMATE.start_main_~b~0_99 0) (<= 4294967296 aux_mod_ULTIMATE.start_main_~b~0_99) (= aux_mod_ULTIMATE.start_main_~b~0_99 (mod c_ULTIMATE.start_main_~A~0 4294967296)))) .cse5)))) is different from false [2020-11-30 03:31:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:40,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144962041] [2020-11-30 03:31:40,166 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:31:40,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663145300] [2020-11-30 03:31:40,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:40,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:31:40,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809727576] [2020-11-30 03:31:40,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:31:40,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:31:40,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:31:40,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2020-11-30 03:31:40,173 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-11-30 03:31:40,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:40,294 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2020-11-30 03:31:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:31:40,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-30 03:31:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:40,300 INFO L225 Difference]: With dead ends: 37 [2020-11-30 03:31:40,300 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 03:31:40,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2020-11-30 03:31:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 03:31:40,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-11-30 03:31:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 03:31:40,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-11-30 03:31:40,310 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2020-11-30 03:31:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:40,311 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-11-30 03:31:40,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:31:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-11-30 03:31:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 03:31:40,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:40,315 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:40,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:31:40,531 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:40,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:40,532 INFO L82 PathProgramCache]: Analyzing trace with hash 83412096, now seen corresponding path program 1 times [2020-11-30 03:31:40,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:40,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179435167] [2020-11-30 03:31:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:40,553 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:31:40,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833914650] [2020-11-30 03:31:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:31:40,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:40,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 03:31:40,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:40,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:40,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179435167] [2020-11-30 03:31:40,737 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:31:40,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833914650] [2020-11-30 03:31:40,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:40,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2020-11-30 03:31:40,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070259951] [2020-11-30 03:31:40,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:31:40,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:31:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:31:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:31:40,739 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-11-30 03:31:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:40,841 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-11-30 03:31:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:31:40,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-30 03:31:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:40,845 INFO L225 Difference]: With dead ends: 46 [2020-11-30 03:31:40,845 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 03:31:40,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:31:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 03:31:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2020-11-30 03:31:40,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 03:31:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-11-30 03:31:40,853 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 13 [2020-11-30 03:31:40,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:40,853 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-11-30 03:31:40,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:31:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-11-30 03:31:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 03:31:40,855 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:40,855 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:41,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:31:41,079 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:41,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:41,079 INFO L82 PathProgramCache]: Analyzing trace with hash 578455298, now seen corresponding path program 1 times [2020-11-30 03:31:41,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:41,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336279798] [2020-11-30 03:31:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:41,121 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:31:41,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774650257] [2020-11-30 03:31:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:31:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:41,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 03:31:41,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:45,821 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-11-30 03:31:45,889 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 03:31:58,935 WARN L193 SmtUtils]: Spent 12.78 s on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-11-30 03:31:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:31:59,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:59,301 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:32:01,470 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-30 03:32:16,066 WARN L193 SmtUtils]: Spent 11.50 s on a formula simplification. DAG size of input: 54 DAG size of output: 26 [2020-11-30 03:32:26,058 WARN L193 SmtUtils]: Spent 7.47 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-30 03:32:28,156 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (* c_ULTIMATE.start_main_~b~0 2))) (let ((.cse4 (mod c_ULTIMATE.start_main_~r~0 4294967296)) (.cse5 (div (+ .cse3 (- 4294967296)) 4294967296))) (or (let ((.cse2 (* (- 1) (mod c_ULTIMATE.start_main_~A~0 4294967296))) (.cse0 (* 2 (div (mod .cse3 4294967296) 2) c_ULTIMATE.start_main_~q~0)) (.cse1 (* (- 4294967295) c_ULTIMATE.start_main_~r~0))) (and (<= (div (+ .cse0 .cse1) 4294967296) (div (+ .cse0 .cse1 .cse2) 4294967296)) (<= (div (+ .cse0 .cse1 .cse2 (- 1)) 4294967296) (div (+ .cse0 .cse1 (- 4294967296)) 4294967296)))) (< .cse4 (mod c_ULTIMATE.start_main_~b~0 4294967296)) (<= (div (+ (* .cse4 (- 1)) .cse3 (- 1)) 4294967296) .cse5) (<= (div .cse3 4294967296) .cse5)))) is different from true [2020-11-30 03:32:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2020-11-30 03:32:28,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336279798] [2020-11-30 03:32:28,173 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:32:28,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774650257] [2020-11-30 03:32:28,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1959389828] [2020-11-30 03:32:28,199 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-30 03:32:28,199 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:32:28,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:32:28,210 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:32:28,211 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:32:28,331 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:32:30,854 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:32:33,920 WARN L193 SmtUtils]: Spent 2.84 s on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2020-11-30 03:32:34,140 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 29 [2020-11-30 03:32:34,361 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2020-11-30 03:32:36,542 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:32:36,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:32:36,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-11-30 03:32:36,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875273650] [2020-11-30 03:32:36,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 03:32:36,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:32:36,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 03:32:36,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=165, Unknown=6, NotChecked=26, Total=240 [2020-11-30 03:32:36,545 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 11 states. [2020-11-30 03:33:01,943 WARN L193 SmtUtils]: Spent 16.69 s on a formula simplification that was a NOOP. DAG size: 34 [2020-11-30 03:33:04,669 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 03:33:29,131 WARN L193 SmtUtils]: Spent 8.55 s on a formula simplification that was a NOOP. DAG size: 48 [2020-11-30 03:33:54,529 WARN L193 SmtUtils]: Spent 14.56 s on a formula simplification that was a NOOP. DAG size: 37 [2020-11-30 03:34:45,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:45,462 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-11-30 03:34:45,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 03:34:45,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 16 [2020-11-30 03:34:45,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:45,465 INFO L225 Difference]: With dead ends: 66 [2020-11-30 03:34:45,465 INFO L226 Difference]: Without dead ends: 63 [2020-11-30 03:34:45,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 116.9s TimeCoverageRelationStatistics Valid=82, Invalid=286, Unknown=16, NotChecked=36, Total=420 [2020-11-30 03:34:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-30 03:34:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 36. [2020-11-30 03:34:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 03:34:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-11-30 03:34:45,475 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 16 [2020-11-30 03:34:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:45,475 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-11-30 03:34:45,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 03:34:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-11-30 03:34:45,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 03:34:45,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:45,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:45,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:45,682 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:45,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:45,683 INFO L82 PathProgramCache]: Analyzing trace with hash 749668699, now seen corresponding path program 1 times [2020-11-30 03:34:45,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:45,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508115296] [2020-11-30 03:34:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:45,698 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:45,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145281418] [2020-11-30 03:34:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:45,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:34:45,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:45,806 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:45,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:45,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508115296] [2020-11-30 03:34:45,893 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:45,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145281418] [2020-11-30 03:34:45,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [719195409] [2020-11-30 03:34:45,896 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2020-11-30 03:34:45,896 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:45,896 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:45,897 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:45,897 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:45,921 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:46,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-30 03:34:46,907 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: should have been removed by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateConjuncts(XnfTir.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateSingleDisjuct(XnfTir.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminate(XnfTir.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.applyEliminationInner(PartialQuantifierElimination.java:537) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.applyEliminationOuter(PartialQuantifierElimination.java:505) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.applyTir(PartialQuantifierElimination.java:441) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:285) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:153) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) 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:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) 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) [2020-11-30 03:34:46,912 INFO L168 Benchmark]: Toolchain (without parser) took 191388.89 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 71.7 MB in the beginning and 74.0 MB in the end (delta: -2.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:46,913 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:34:46,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.06 ms. Allocated memory is still 102.8 MB. Free memory was 71.2 MB in the beginning and 81.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:46,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 102.8 MB. Free memory was 81.1 MB in the beginning and 79.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:46,915 INFO L168 Benchmark]: Boogie Preprocessor took 30.19 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 78.8 MB in the end (delta: 844.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:34:46,916 INFO L168 Benchmark]: RCFGBuilder took 737.59 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 56.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:46,916 INFO L168 Benchmark]: TraceAbstraction took 190217.58 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 55.9 MB in the beginning and 74.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:46,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 63.5 MB in the beginning and 63.5 MB in the end (delta: 33.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.06 ms. Allocated memory is still 102.8 MB. Free memory was 71.2 MB in the beginning and 81.5 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.10 ms. Allocated memory is still 102.8 MB. Free memory was 81.1 MB in the beginning and 79.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.19 ms. Allocated memory is still 102.8 MB. Free memory was 79.6 MB in the beginning and 78.8 MB in the end (delta: 844.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 737.59 ms. Allocated memory is still 102.8 MB. Free memory was 78.5 MB in the beginning and 56.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 190217.58 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 55.9 MB in the beginning and 74.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: should have been removed by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: should have been removed by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateConjuncts(XnfTir.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:34:49,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:34:49,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:34:49,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:34:49,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:34:49,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:34:49,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:34:49,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:34:49,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:34:49,799 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:34:49,800 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:34:49,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:34:49,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:34:49,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:34:49,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:34:49,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:34:49,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:34:49,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:34:49,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:34:49,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:34:49,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:34:49,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:34:49,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:34:49,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:34:49,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:34:49,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:34:49,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:34:49,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:34:49,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:34:49,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:34:49,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:34:49,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:34:49,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:34:49,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:34:49,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:34:49,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:34:49,841 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:34:49,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:34:49,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:34:49,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:34:49,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:34:49,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 03:34:49,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:34:49,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:34:49,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:34:49,878 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:34:49,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:34:49,878 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:34:49,879 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:34:49,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:34:49,879 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:34:49,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:34:49,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:34:49,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:34:49,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:34:49,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:34:49,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:34:49,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:34:49,883 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:34:49,883 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 03:34:49,884 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 03:34:49,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:34:49,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:34:49,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:34:49,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:34:49,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:34:49,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 03:34:49,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:34:49,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:34:49,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:34:49,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:34:49,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:34:49,888 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:34:49,888 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 03:34:49,889 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 03:34:49,889 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:34:49,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:34:49,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:34:49,890 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6295d007fd73e68ecc4d2723d0cfa636974ad3ae [2020-11-30 03:34:50,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:34:50,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:34:50,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:34:50,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:34:50,371 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:34:50,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i [2020-11-30 03:34:50,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/f12d00181/7fa82404c1d5400cb8e8483d33eb3f42/FLAG9fdbf5066 [2020-11-30 03:34:51,162 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:34:51,163 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound10.i [2020-11-30 03:34:51,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/f12d00181/7fa82404c1d5400cb8e8483d33eb3f42/FLAG9fdbf5066 [2020-11-30 03:34:51,527 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/data/f12d00181/7fa82404c1d5400cb8e8483d33eb3f42 [2020-11-30 03:34:51,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:34:51,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:34:51,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:34:51,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:34:51,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:34:51,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26674ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51, skipping insertion in model container [2020-11-30 03:34:51,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:34:51,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:34:51,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:34:51,787 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:34:51,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:34:51,889 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:34:51,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51 WrapperNode [2020-11-30 03:34:51,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:34:51,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:34:51,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:34:51,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:34:51,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:34:51,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:34:51,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:34:51,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:34:51,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... [2020-11-30 03:34:51,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:34:51,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:34:51,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:34:51,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:34:51,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:34:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 03:34:52,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:34:52,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:34:52,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:34:52,745 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:34:52,745 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 03:34:52,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:52 BoogieIcfgContainer [2020-11-30 03:34:52,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:34:52,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:34:52,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:34:52,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:34:52,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:34:51" (1/3) ... [2020-11-30 03:34:52,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5121bf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:34:52, skipping insertion in model container [2020-11-30 03:34:52,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:51" (2/3) ... [2020-11-30 03:34:52,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5121bf27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:34:52, skipping insertion in model container [2020-11-30 03:34:52,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:52" (3/3) ... [2020-11-30 03:34:52,763 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound10.i [2020-11-30 03:34:52,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:34:52,782 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 03:34:52,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 03:34:52,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:34:52,844 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:34:52,844 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:34:52,844 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:34:52,844 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:34:52,845 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:34:52,845 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:34:52,845 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:34:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 03:34:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 03:34:52,871 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:52,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:52,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:52,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:52,880 INFO L82 PathProgramCache]: Analyzing trace with hash -158404674, now seen corresponding path program 1 times [2020-11-30 03:34:52,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:34:52,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461495807] [2020-11-30 03:34:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 03:34:53,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 03:34:53,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:53,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:53,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461495807] [2020-11-30 03:34:53,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:53,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 03:34:53,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61264151] [2020-11-30 03:34:53,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:34:53,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:34:53,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:34:53,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:34:53,156 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-30 03:34:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:53,200 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2020-11-30 03:34:53,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:34:53,202 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 03:34:53,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:53,216 INFO L225 Difference]: With dead ends: 53 [2020-11-30 03:34:53,217 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 03:34:53,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:34:53,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 03:34:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 03:34:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 03:34:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-11-30 03:34:53,267 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 13 [2020-11-30 03:34:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:53,267 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-11-30 03:34:53,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:34:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-11-30 03:34:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 03:34:53,270 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:53,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:53,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 03:34:53,484 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:53,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:53,488 INFO L82 PathProgramCache]: Analyzing trace with hash 124542962, now seen corresponding path program 1 times [2020-11-30 03:34:53,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:34:53,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108552791] [2020-11-30 03:34:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 03:34:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:53,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:34:53,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:53,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:53,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:53,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108552791] [2020-11-30 03:34:53,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:53,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 03:34:53,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883535146] [2020-11-30 03:34:53,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:34:53,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:34:53,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:34:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:34:53,694 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2020-11-30 03:34:53,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:53,779 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2020-11-30 03:34:53,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:34:53,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 03:34:53,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:53,783 INFO L225 Difference]: With dead ends: 45 [2020-11-30 03:34:53,784 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 03:34:53,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:34:53,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 03:34:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-11-30 03:34:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 03:34:53,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-11-30 03:34:53,796 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2020-11-30 03:34:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:53,797 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-11-30 03:34:53,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:34:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-11-30 03:34:53,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 03:34:53,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:53,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:54,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 03:34:54,002 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:54,003 INFO L82 PathProgramCache]: Analyzing trace with hash -787061319, now seen corresponding path program 1 times [2020-11-30 03:34:54,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:34:54,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1998251281] [2020-11-30 03:34:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 03:34:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:54,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 03:34:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:54,143 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 03:34:54,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:54,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:54,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1998251281] [2020-11-30 03:34:54,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:54,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2020-11-30 03:34:54,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16859472] [2020-11-30 03:34:54,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 03:34:54,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:34:54,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 03:34:54,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:34:54,913 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 10 states. [2020-11-30 03:34:56,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:56,603 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2020-11-30 03:34:56,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 03:34:56,606 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-30 03:34:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:56,607 INFO L225 Difference]: With dead ends: 64 [2020-11-30 03:34:56,608 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 03:34:56,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-11-30 03:34:56,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 03:34:56,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2020-11-30 03:34:56,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 03:34:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2020-11-30 03:34:56,620 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 15 [2020-11-30 03:34:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:56,620 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2020-11-30 03:34:56,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 03:34:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2020-11-30 03:34:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 03:34:56,622 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:56,622 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:56,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 03:34:56,834 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:56,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:56,835 INFO L82 PathProgramCache]: Analyzing trace with hash 963856498, now seen corresponding path program 1 times [2020-11-30 03:34:56,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:34:56,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35910030] [2020-11-30 03:34:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 03:34:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:56,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:56,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:56,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:57,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35910030] [2020-11-30 03:34:57,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [638795826] [2020-11-30 03:34:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 03:34:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:57,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:57,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:57,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790248334] [2020-11-30 03:34:57,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:57,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:57,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:57,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:57,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:57,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:57,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 03:34:57,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 9 [2020-11-30 03:34:57,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187845240] [2020-11-30 03:34:57,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 03:34:57,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:34:57,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 03:34:57,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-30 03:34:57,422 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 10 states. [2020-11-30 03:34:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:57,883 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2020-11-30 03:34:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 03:34:57,886 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-11-30 03:34:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:57,888 INFO L225 Difference]: With dead ends: 131 [2020-11-30 03:34:57,889 INFO L226 Difference]: Without dead ends: 116 [2020-11-30 03:34:57,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-11-30 03:34:57,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-30 03:34:57,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 50. [2020-11-30 03:34:57,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-30 03:34:57,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-11-30 03:34:57,926 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 20 [2020-11-30 03:34:57,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:57,926 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-11-30 03:34:57,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 03:34:57,927 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-11-30 03:34:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 03:34:57,927 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:57,928 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:58,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:58,529 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:58,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:58,529 INFO L82 PathProgramCache]: Analyzing trace with hash -538145479, now seen corresponding path program 1 times [2020-11-30 03:34:58,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:34:58,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495795376] [2020-11-30 03:34:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 03:34:58,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:58,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 03:34:58,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 03:34:58,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-30 03:34:58,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495795376] [2020-11-30 03:34:58,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:58,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2020-11-30 03:34:58,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524616121] [2020-11-30 03:34:58,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:34:58,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:34:58,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:34:58,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:58,677 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 5 states. [2020-11-30 03:34:58,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:58,679 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-11-30 03:34:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:34:58,679 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-11-30 03:34:58,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:58,680 INFO L225 Difference]: With dead ends: 50 [2020-11-30 03:34:58,680 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:34:58,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:58,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:34:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:34:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:34:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:34:58,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-11-30 03:34:58,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:58,681 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:34:58,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:34:58,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:34:58,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:34:58,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 03:34:58,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:34:58,928 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 03:34:58,928 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-30 03:34:58,928 INFO L270 CegarLoopResult]: At program point L19-1(line 42) the Hoare annotation is: false [2020-11-30 03:34:58,928 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-30 03:34:58,929 INFO L277 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-11-30 03:34:58,929 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-30 03:34:58,929 INFO L274 CegarLoopResult]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2020-11-30 03:34:58,929 INFO L274 CegarLoopResult]: For program point L40(lines 40 49) no Hoare annotation was computed. [2020-11-30 03:34:58,929 INFO L274 CegarLoopResult]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2020-11-30 03:34:58,929 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 39) no Hoare annotation was computed. [2020-11-30 03:34:58,929 INFO L270 CegarLoopResult]: At program point L36-3(lines 36 39) the Hoare annotation is: false [2020-11-30 03:34:58,929 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point L16-2(line 16) no Hoare annotation was computed. [2020-11-30 03:34:58,930 INFO L274 CegarLoopResult]: For program point L45(lines 45 48) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point L45-2(lines 26 52) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:34:58,931 INFO L277 CegarLoopResult]: At program point L51(lines 26 52) the Hoare annotation is: true [2020-11-30 03:34:58,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:34:58 BoogieIcfgContainer [2020-11-30 03:34:58,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:34:58,942 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:34:58,942 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:34:58,943 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:34:58,943 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:52" (3/4) ... [2020-11-30 03:34:58,947 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:34:58,960 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-30 03:34:58,960 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 03:34:58,960 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:34:58,961 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:34:59,016 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8560ecff-c609-4246-b863-65e251d4192e/bin/utaipan/witness.graphml [2020-11-30 03:34:59,017 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:34:59,019 INFO L168 Benchmark]: Toolchain (without parser) took 7485.50 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 40.1 MB in the beginning and 47.1 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:59,019 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 60.8 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:34:59,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.36 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 44.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:59,021 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 42.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:34:59,021 INFO L168 Benchmark]: Boogie Preprocessor took 39.57 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 41.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:59,022 INFO L168 Benchmark]: RCFGBuilder took 771.02 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 41.2 MB in the beginning and 67.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:59,023 INFO L168 Benchmark]: TraceAbstraction took 6188.85 ms. Allocated memory is still 86.0 MB. Free memory was 67.3 MB in the beginning and 50.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:59,024 INFO L168 Benchmark]: Witness Printer took 74.61 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 47.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:34:59,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 60.8 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.36 ms. Allocated memory is still 60.8 MB. Free memory was 39.9 MB in the beginning and 44.1 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.13 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 42.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.57 ms. Allocated memory is still 60.8 MB. Free memory was 42.4 MB in the beginning and 41.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 771.02 ms. Allocated memory was 60.8 MB in the beginning and 86.0 MB in the end (delta: 25.2 MB). Free memory was 41.2 MB in the beginning and 67.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6188.85 ms. Allocated memory is still 86.0 MB. Free memory was 67.3 MB in the beginning and 50.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.61 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 47.1 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 196 SDslu, 264 SDs, 0 SdLazy, 154 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 78 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 232 ConstructedInterpolants, 0 QuantifiedInterpolants, 11520 SizeOfPredicates, 24 NumberOfNonLiveVariables, 327 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 18/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...