./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/bitvector/sum02_true-unreach-call_true-no-overflow.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/sum02_true-unreach-call_true-no-overflow.i -s /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47d5b82304f27c8fccc0115d8bbb6303e0d8c3f9 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-26 20:02:42,961 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 20:02:42,963 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 20:02:42,976 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 20:02:42,976 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 20:02:42,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 20:02:42,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 20:02:42,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 20:02:42,984 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 20:02:42,986 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 20:02:42,993 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 20:02:42,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 20:02:42,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 20:02:42,994 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 20:02:42,995 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 20:02:42,996 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 20:02:42,996 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 20:02:43,000 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 20:02:43,001 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 20:02:43,002 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 20:02:43,006 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 20:02:43,007 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 20:02:43,011 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 20:02:43,011 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 20:02:43,011 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 20:02:43,012 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 20:02:43,012 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 20:02:43,015 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 20:02:43,016 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 20:02:43,017 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 20:02:43,017 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 20:02:43,017 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 20:02:43,018 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 20:02:43,018 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 20:02:43,018 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 20:02:43,019 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 20:02:43,019 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-26 20:02:43,033 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 20:02:43,033 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 20:02:43,034 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 20:02:43,034 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 20:02:43,034 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 20:02:43,035 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 20:02:43,035 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 20:02:43,035 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 20:02:43,035 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 20:02:43,035 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 20:02:43,035 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 20:02:43,036 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 20:02:43,036 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-26 20:02:43,036 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 20:02:43,036 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-26 20:02:43,037 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 20:02:43,037 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 20:02:43,037 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 20:02:43,038 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 20:02:43,038 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-26 20:02:43,038 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 20:02:43,039 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 20:02:43,039 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 20:02:43,039 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 20:02:43,039 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 20:02:43,039 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 20:02:43,039 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 20:02:43,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 20:02:43,040 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 20:02:43,040 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 20:02:43,040 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 20:02:43,040 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 20:02:43,040 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 20:02:43,041 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 20:02:43,041 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/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(__VERIFIER_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 -> 47d5b82304f27c8fccc0115d8bbb6303e0d8c3f9 [2018-10-26 20:02:43,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 20:02:43,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 20:02:43,091 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 20:02:43,092 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 20:02:43,093 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 20:02:43,095 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/../../sv-benchmarks/c/bitvector/sum02_true-unreach-call_true-no-overflow.i [2018-10-26 20:02:43,151 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/data/bf31efb1d/5572b773527b462cac6b4e2c16daf98b/FLAG504913f70 [2018-10-26 20:02:43,535 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 20:02:43,535 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/sv-benchmarks/c/bitvector/sum02_true-unreach-call_true-no-overflow.i [2018-10-26 20:02:43,541 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/data/bf31efb1d/5572b773527b462cac6b4e2c16daf98b/FLAG504913f70 [2018-10-26 20:02:43,551 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/data/bf31efb1d/5572b773527b462cac6b4e2c16daf98b [2018-10-26 20:02:43,554 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 20:02:43,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-26 20:02:43,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 20:02:43,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 20:02:43,560 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 20:02:43,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4698943a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43, skipping insertion in model container [2018-10-26 20:02:43,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 20:02:43,588 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 20:02:43,717 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:02:43,720 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 20:02:43,733 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 20:02:43,743 INFO L193 MainTranslator]: Completed translation [2018-10-26 20:02:43,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43 WrapperNode [2018-10-26 20:02:43,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 20:02:43,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 20:02:43,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 20:02:43,745 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 20:02:43,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 20:02:43,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 20:02:43,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 20:02:43,763 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 20:02:43,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... [2018-10-26 20:02:43,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 20:02:43,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 20:02:43,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 20:02:43,782 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 20:02:43,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/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 [2018-10-26 20:02:43,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 20:02:43,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 20:02:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 20:02:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 20:02:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 20:02:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 20:02:43,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-26 20:02:43,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-26 20:02:44,176 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 20:02:44,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:02:44 BoogieIcfgContainer [2018-10-26 20:02:44,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 20:02:44,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 20:02:44,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 20:02:44,180 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 20:02:44,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:02:43" (1/3) ... [2018-10-26 20:02:44,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14453cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:02:44, skipping insertion in model container [2018-10-26 20:02:44,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:02:43" (2/3) ... [2018-10-26 20:02:44,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14453cd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:02:44, skipping insertion in model container [2018-10-26 20:02:44,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:02:44" (3/3) ... [2018-10-26 20:02:44,184 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02_true-unreach-call_true-no-overflow.i [2018-10-26 20:02:44,192 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 20:02:44,200 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 20:02:44,216 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 20:02:44,266 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 20:02:44,267 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 20:02:44,267 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 20:02:44,267 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 20:02:44,267 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 20:02:44,267 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 20:02:44,267 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 20:02:44,267 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 20:02:44,292 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-26 20:02:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-26 20:02:44,309 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:02:44,310 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:02:44,311 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:02:44,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:02:44,317 INFO L82 PathProgramCache]: Analyzing trace with hash 264554104, now seen corresponding path program 1 times [2018-10-26 20:02:44,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:02:44,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:44,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:44,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:44,388 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:02:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:02:44,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:44,474 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:02:44,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-26 20:02:44,475 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:02:44,480 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-26 20:02:44,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-26 20:02:44,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-26 20:02:44,495 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-26 20:02:44,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:02:44,526 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-10-26 20:02:44,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-26 20:02:44,528 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-26 20:02:44,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:02:44,535 INFO L225 Difference]: With dead ends: 32 [2018-10-26 20:02:44,536 INFO L226 Difference]: Without dead ends: 14 [2018-10-26 20:02:44,539 INFO L605 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 [2018-10-26 20:02:44,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-10-26 20:02:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-10-26 20:02:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-10-26 20:02:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-10-26 20:02:44,575 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-10-26 20:02:44,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:02:44,577 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-10-26 20:02:44,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-26 20:02:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-10-26 20:02:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-26 20:02:44,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:02:44,579 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:02:44,579 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:02:44,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:02:44,580 INFO L82 PathProgramCache]: Analyzing trace with hash -31568544, now seen corresponding path program 1 times [2018-10-26 20:02:44,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:02:44,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:44,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:44,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:44,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:02:44,588 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:02:44,588 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:02:44,588 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 20:02:44,598 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:44,598 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:02:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:02:44,625 INFO L190 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-10-26 20:02:44,625 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 20:02:44,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:02:44,626 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:02:44,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:44,633 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-26 20:02:44,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:02:44,666 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:02:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:44,742 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:02:44,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:44,859 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-10-26 20:02:44,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-10-26 20:02:44,859 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 20:02:44,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 20:02:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 20:02:44,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-26 20:02:44,860 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-10-26 20:02:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:02:44,931 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-10-26 20:02:44,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 20:02:44,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-10-26 20:02:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:02:44,932 INFO L225 Difference]: With dead ends: 22 [2018-10-26 20:02:44,932 INFO L226 Difference]: Without dead ends: 16 [2018-10-26 20:02:44,932 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-10-26 20:02:44,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-26 20:02:44,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-26 20:02:44,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-26 20:02:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-26 20:02:44,936 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-10-26 20:02:44,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:02:44,936 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-26 20:02:44,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 20:02:44,936 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-26 20:02:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-26 20:02:44,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:02:44,942 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:02:44,943 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:02:44,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:02:44,943 INFO L82 PathProgramCache]: Analyzing trace with hash -2144817060, now seen corresponding path program 1 times [2018-10-26 20:02:44,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:02:44,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:44,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:44,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:44,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:02:44,959 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:02:44,960 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:02:44,960 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-10-26 20:02:44,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:44,976 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:02:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:02:45,003 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-10-26 20:02:45,005 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [11], [13], [15], [19], [22], [25], [27], [33], [34], [35], [37] [2018-10-26 20:02:45,044 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 20:02:45,044 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 20:02:45,139 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-26 20:02:45,620 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-26 20:02:45,623 INFO L272 AbstractInterpreter]: Visited 14 different actions 101 times. Merged at 5 different actions 49 times. Widened at 1 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 7 variables. [2018-10-26 20:02:45,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:02:45,666 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-26 20:02:45,666 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:02:45,666 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-26 20:02:45,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:45,676 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:02:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:02:45,704 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:02:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:45,983 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:02:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:46,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:02:46,137 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-10-26 20:02:46,137 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 20:02:46,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-26 20:02:46,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-26 20:02:46,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-26 20:02:46,138 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 10 states. [2018-10-26 20:02:46,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:02:46,204 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-10-26 20:02:46,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 20:02:46,205 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2018-10-26 20:02:46,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:02:46,205 INFO L225 Difference]: With dead ends: 25 [2018-10-26 20:02:46,205 INFO L226 Difference]: Without dead ends: 19 [2018-10-26 20:02:46,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-10-26 20:02:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-10-26 20:02:46,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-10-26 20:02:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-10-26 20:02:46,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-10-26 20:02:46,208 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2018-10-26 20:02:46,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:02:46,209 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-10-26 20:02:46,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-26 20:02:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-10-26 20:02:46,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-26 20:02:46,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:02:46,212 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:02:46,212 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:02:46,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:02:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1994234848, now seen corresponding path program 2 times [2018-10-26 20:02:46,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:02:46,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:46,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:02:46,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:02:46,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:02:46,223 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:02:46,223 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:02:46,223 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/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 [2018-10-26 20:02:46,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 20:02:46,230 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 20:02:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:02:46,327 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-26 20:02:46,327 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 20:02:46,327 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:02:46,327 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:02:46,337 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-26 20:02:46,338 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-10-26 20:02:46,478 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-10-26 20:02:46,478 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:02:46,480 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:02:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:48,447 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:02:49,172 WARN L179 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2018-10-26 20:02:49,672 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 20:02:49,905 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 20:02:55,634 WARN L179 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 29 [2018-10-26 20:02:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:02:55,678 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:02:55,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2018-10-26 20:02:55,678 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 20:02:55,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-26 20:02:55,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-26 20:02:55,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=277, Unknown=3, NotChecked=0, Total=342 [2018-10-26 20:02:55,679 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 19 states. [2018-10-26 20:03:05,628 WARN L179 SmtUtils]: Spent 945.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 20:03:08,587 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-10-26 20:03:26,865 WARN L179 SmtUtils]: Spent 11.79 s on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2018-10-26 20:03:28,310 WARN L179 SmtUtils]: Spent 915.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 20:03:49,007 WARN L179 SmtUtils]: Spent 19.88 s on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2018-10-26 20:03:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:03:51,243 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-10-26 20:03:51,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-26 20:03:51,244 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 18 [2018-10-26 20:03:51,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:03:51,245 INFO L225 Difference]: With dead ends: 36 [2018-10-26 20:03:51,245 INFO L226 Difference]: Without dead ends: 28 [2018-10-26 20:03:51,246 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=148, Invalid=546, Unknown=8, NotChecked=0, Total=702 [2018-10-26 20:03:51,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-26 20:03:51,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-10-26 20:03:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-26 20:03:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-10-26 20:03:51,249 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 18 [2018-10-26 20:03:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:03:51,251 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2018-10-26 20:03:51,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-26 20:03:51,251 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2018-10-26 20:03:51,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-26 20:03:51,251 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:03:51,251 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:03:51,252 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:03:51,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:03:51,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1913246556, now seen corresponding path program 3 times [2018-10-26 20:03:51,252 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:03:51,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:03:51,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 20:03:51,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:03:51,253 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:03:51,261 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:03:51,262 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:03:51,262 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:03:51,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 20:03:51,271 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 20:03:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 20:03:51,371 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-10-26 20:03:51,371 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-26 20:03:51,371 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 20:03:51,371 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 20:03:51,379 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-26 20:03:51,379 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-10-26 20:03:54,314 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-26 20:03:54,314 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-26 20:03:54,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 20:03:54,732 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:03:54,732 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-26 20:03:59,279 WARN L179 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2018-10-26 20:04:00,425 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-26 20:04:04,612 WARN L179 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-26 20:04:08,282 WARN L179 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 29 [2018-10-26 20:04:16,845 WARN L179 SmtUtils]: Spent 4.47 s on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-10-26 20:04:21,178 WARN L179 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 32 [2018-10-26 20:04:36,484 WARN L179 SmtUtils]: Spent 11.40 s on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-10-26 20:04:50,830 WARN L179 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 35 [2018-10-26 20:05:16,966 WARN L179 SmtUtils]: Spent 6.99 s on a formula simplification that was a NOOP. DAG size: 39 [2018-10-26 20:05:16,984 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 33 refuted. 7 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 20:05:17,002 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 20:05:17,002 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2018-10-26 20:05:17,002 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-26 20:05:17,003 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-26 20:05:17,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-26 20:05:17,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=778, Unknown=16, NotChecked=0, Total=930 [2018-10-26 20:05:17,004 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 31 states. [2018-10-26 20:06:42,947 WARN L179 SmtUtils]: Spent 51.50 s on a formula simplification that was a NOOP. DAG size: 64 [2018-10-26 20:06:47,070 WARN L832 $PredicateComparison]: unable to prove that (let ((.cse5 (mod c_main_~i~0 4294967296)) (.cse3 (mod c_main_~n~0 4294967296))) (let ((.cse9 (mod (+ c_main_~i~0 3) 4294967296)) (.cse7 (mod (+ c_main_~i~0 2) 4294967296)) (.cse1 (mod (div (mod (* .cse3 (+ .cse3 1)) 18446744073709551616) 2) 18446744073709551616)) (.cse4 (< .cse3 .cse5)) (.cse2 (mod (+ c_main_~i~0 1) 4294967296))) (and (let ((.cse0 (mod (+ c_main_~sn~0 .cse5) 18446744073709551616))) (or (= 0 .cse0) (= .cse1 .cse0) (<= .cse2 .cse3) .cse4)) (let ((.cse6 (mod c_main_~sn~0 18446744073709551616))) (or (<= .cse5 .cse3) (= .cse1 .cse6) (= 0 .cse6))) (let ((.cse8 (mod (+ .cse2 c_main_~sn~0 .cse5 .cse7) 18446744073709551616))) (or (< .cse3 .cse7) .cse4 (= .cse8 .cse1) (<= .cse9 .cse3) (= .cse8 0))) (let ((.cse10 (mod (+ .cse2 c_main_~sn~0 .cse5 .cse7 .cse9) 18446744073709551616))) (or (<= (mod (+ c_main_~i~0 4) 4294967296) .cse3) (= .cse10 .cse1) .cse4 (< .cse3 .cse9) (= 0 .cse10))) (let ((.cse11 (mod (+ .cse2 c_main_~sn~0 .cse5) 18446744073709551616))) (or (<= .cse7 .cse3) (= .cse11 .cse1) .cse4 (< .cse3 .cse2) (= 0 .cse11)))))) is different from false [2018-10-26 20:07:27,821 WARN L179 SmtUtils]: Spent 16.39 s on a formula simplification that was a NOOP. DAG size: 51 [2018-10-26 20:08:11,979 WARN L179 SmtUtils]: Spent 11.50 s on a formula simplification that was a NOOP. DAG size: 49 [2018-10-26 20:09:52,403 WARN L179 SmtUtils]: Spent 1.51 m on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-10-26 20:10:20,743 WARN L179 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 44 [2018-10-26 20:13:24,419 WARN L179 SmtUtils]: Spent 2.88 m on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-26 20:13:41,603 WARN L179 SmtUtils]: Spent 3.48 s on a formula simplification that was a NOOP. DAG size: 39 [2018-10-26 20:14:02,314 WARN L179 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 34 [2018-10-26 20:14:13,967 WARN L179 SmtUtils]: Spent 1.44 s on a formula simplification that was a NOOP. DAG size: 30 [2018-10-26 20:14:21,857 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-26 20:14:51,613 WARN L179 SmtUtils]: Spent 20.52 s on a formula simplification that was a NOOP. DAG size: 54 [2018-10-26 20:14:58,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 20:14:58,251 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2018-10-26 20:14:58,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-26 20:14:58,252 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 27 [2018-10-26 20:14:58,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 20:14:58,253 INFO L225 Difference]: With dead ends: 56 [2018-10-26 20:14:58,253 INFO L226 Difference]: Without dead ends: 46 [2018-10-26 20:14:58,254 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 605.8s TimeCoverageRelationStatistics Valid=363, Invalid=1733, Unknown=70, NotChecked=90, Total=2256 [2018-10-26 20:14:58,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-10-26 20:14:58,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-10-26 20:14:58,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-10-26 20:14:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-10-26 20:14:58,260 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 27 [2018-10-26 20:14:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 20:14:58,260 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-10-26 20:14:58,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-26 20:14:58,260 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-10-26 20:14:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-10-26 20:14:58,261 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 20:14:58,261 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 20:14:58,262 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 20:14:58,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 20:14:58,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1527638052, now seen corresponding path program 4 times [2018-10-26 20:14:58,262 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 20:14:58,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:14:58,263 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-26 20:14:58,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 20:14:58,263 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 20:14:58,287 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-26 20:14:58,287 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-26 20:14:58,287 INFO L171 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_74bccf68-78f6-4eb2-8576-ac9f43f3afe9/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-26 20:14:58,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 20:14:58,323 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-10-26 20:15:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2018-10-26 20:15:00,348 INFO L285 seRefinementStrategy]: Strategy TaipanRefinementStrategy was unsuccessful and could not determine trace feasibility. [2018-10-26 20:15:00,348 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-26 20:15:00,363 WARN L208 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-10-26 20:15:00,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:15:00 BoogieIcfgContainer [2018-10-26 20:15:00,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 20:15:00,364 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-26 20:15:00,364 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-26 20:15:00,364 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-26 20:15:00,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:02:44" (3/4) ... [2018-10-26 20:15:00,368 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-26 20:15:00,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-26 20:15:00,369 INFO L168 Benchmark]: Toolchain (without parser) took 736814.60 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.6 MB). Free memory was 954.4 MB in the beginning and 907.0 MB in the end (delta: 47.5 MB). Peak memory consumption was 157.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:15:00,371 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:15:00,373 INFO L168 Benchmark]: CACSL2BoogieTranslator took 188.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:15:00,374 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.25 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:15:00,375 INFO L168 Benchmark]: Boogie Preprocessor took 18.79 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-26 20:15:00,375 INFO L168 Benchmark]: RCFGBuilder took 395.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -198.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. [2018-10-26 20:15:00,376 INFO L168 Benchmark]: TraceAbstraction took 736186.03 ms. Allocated memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: -40.9 MB). Free memory was 1.1 GB in the beginning and 907.0 MB in the end (delta: 232.3 MB). Peak memory consumption was 191.4 MB. Max. memory is 11.5 GB. [2018-10-26 20:15:00,376 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 1.1 GB. Free memory is still 907.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-26 20:15:00,379 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 979.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 188.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.25 ms. Allocated memory is still 1.0 GB. Free memory is still 943.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.79 ms. Allocated memory is still 1.0 GB. Free memory was 943.7 MB in the beginning and 941.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 395.10 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 941.0 MB in the beginning and 1.1 GB in the end (delta: -198.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 736186.03 ms. Allocated memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: -40.9 MB). Free memory was 1.1 GB in the beginning and 907.0 MB in the end (delta: 232.3 MB). Peak memory consumption was 191.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.43 ms. Allocated memory is still 1.1 GB. Free memory is still 907.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L11] unsigned int i, n=__VERIFIER_nondet_uint(); [L12] unsigned long long sn=0; [L14] i=0 [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND TRUE i<=n [L15] sn = sn + i [L14] i++ [L14] COND FALSE !(i<=n) [L17] unsigned long long nl = n; [L18] unsigned long long gauss = (nl*(nl+1U))/2U; [L19] CALL __VERIFIER_assert(sn==gauss || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. UNKNOWN Result, 736.1s OverallTime, 6 OverallIterations, 12 TraceHistogramMax, 637.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 65 SDslu, 408 SDs, 0 SdLazy, 373 SolverSat, 87 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 66.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 662.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 5.3s SatisfiabilityAnalysisTime, 92.4s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 146 ConstructedInterpolants, 6 QuantifiedInterpolants, 51282 SizeOfPredicates, 21 NumberOfNonLiveVariables, 176 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 0/98 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...