./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-memory-alloca/c.01-no-inv-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-memory-alloca/c.01-no-inv-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f49dce48b63f0ee8eed4ac47c25c384a83e3c23200b58c130c184e2b953e32f3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:31:28,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:31:28,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:31:28,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:31:28,758 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:31:28,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:31:28,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:31:28,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:31:28,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:31:28,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:31:28,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:31:28,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:31:28,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:31:28,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:31:28,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:31:28,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:31:28,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:31:28,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:31:28,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:31:28,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:31:28,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:31:28,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:31:28,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:31:28,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:31:28,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:31:28,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:31:28,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:31:28,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:31:28,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:31:28,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:31:28,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:31:28,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:31:28,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:31:28,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:31:28,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:31:28,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:31:28,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:31:28,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:31:28,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:31:28,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:31:28,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:31:28,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 02:31:28,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:31:28,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:31:28,843 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:31:28,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:31:28,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:31:28,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:31:28,845 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:31:28,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:31:28,845 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:31:28,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:31:28,846 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:31:28,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:31:28,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:31:28,846 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:31:28,846 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:31:28,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:31:28,847 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:31:28,847 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:31:28,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:31:28,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:31:28,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:31:28,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:31:28,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:31:28,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:31:28,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:31:28,849 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:31:28,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:31:28,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:31:28,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:31:28,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:31:28,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:31:28,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:31:28,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:31:28,851 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:31:28,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:31:28,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:31:28,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:31:28,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:31:28,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:31:28,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:31:28,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f49dce48b63f0ee8eed4ac47c25c384a83e3c23200b58c130c184e2b953e32f3 [2022-11-22 02:31:29,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:31:29,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:31:29,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:31:29,168 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:31:29,169 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:31:29,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-memory-alloca/c.01-no-inv-alloca.i [2022-11-22 02:31:32,309 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:31:32,578 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:31:32,579 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/sv-benchmarks/c/termination-memory-alloca/c.01-no-inv-alloca.i [2022-11-22 02:31:32,598 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/data/46552cf7b/99db304a50604313bf50debefeb10057/FLAGf44c04640 [2022-11-22 02:31:32,615 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/data/46552cf7b/99db304a50604313bf50debefeb10057 [2022-11-22 02:31:32,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:31:32,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:31:32,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:31:32,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:31:32,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:31:32,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:31:32" (1/1) ... [2022-11-22 02:31:32,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73b1d89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:32, skipping insertion in model container [2022-11-22 02:31:32,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:31:32" (1/1) ... [2022-11-22 02:31:32,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:31:32,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:31:32,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:31:33,001 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:31:33,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:31:33,090 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:31:33,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33 WrapperNode [2022-11-22 02:31:33,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:31:33,092 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:31:33,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:31:33,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:31:33,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,145 INFO L138 Inliner]: procedures = 111, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2022-11-22 02:31:33,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:31:33,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:31:33,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:31:33,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:31:33,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,158 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,168 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:31:33,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:31:33,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:31:33,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:31:33,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (1/1) ... [2022-11-22 02:31:33,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:31:33,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:33,217 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:31:33,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:31:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:31:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:31:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:31:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:31:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:31:33,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:31:33,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:31:33,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:31:33,594 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:31:33,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:31:33,691 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:31:33,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:33 BoogieIcfgContainer [2022-11-22 02:31:33,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:31:33,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:31:33,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:31:33,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:31:33,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:31:32" (1/3) ... [2022-11-22 02:31:33,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d46f3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:33, skipping insertion in model container [2022-11-22 02:31:33,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:33" (2/3) ... [2022-11-22 02:31:33,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d46f3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:33, skipping insertion in model container [2022-11-22 02:31:33,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:33" (3/3) ... [2022-11-22 02:31:33,730 INFO L112 eAbstractionObserver]: Analyzing ICFG c.01-no-inv-alloca.i [2022-11-22 02:31:33,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:31:33,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 02:31:33,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:31:33,837 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@25f7c63e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:31:33,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 02:31:33,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:31:33,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:33,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:31:33,848 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:33,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:33,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1911891797, now seen corresponding path program 1 times [2022-11-22 02:31:33,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:33,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212538035] [2022-11-22 02:31:33,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:34,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:34,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212538035] [2022-11-22 02:31:34,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212538035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:34,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:34,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:31:34,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738461748] [2022-11-22 02:31:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:34,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:31:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:34,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:31:34,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:31:34,235 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:34,267 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-22 02:31:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:31:34,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:31:34,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:34,277 INFO L225 Difference]: With dead ends: 31 [2022-11-22 02:31:34,278 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:31:34,280 INFO L412 NwaCegarLoop]: 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 [2022-11-22 02:31:34,284 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:34,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:31:34,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:31:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-22 02:31:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:34,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-22 02:31:34,316 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2022-11-22 02:31:34,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:34,316 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-22 02:31:34,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-22 02:31:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:31:34,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:34,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:31:34,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:31:34,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1911871872, now seen corresponding path program 1 times [2022-11-22 02:31:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:34,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734207685] [2022-11-22 02:31:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:34,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:34,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:34,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734207685] [2022-11-22 02:31:34,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734207685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:34,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:34,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:31:34,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149536245] [2022-11-22 02:31:34,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:34,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:31:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:34,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:31:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:31:34,728 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:34,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:34,804 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-11-22 02:31:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:31:34,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:31:34,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:34,806 INFO L225 Difference]: With dead ends: 25 [2022-11-22 02:31:34,806 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 02:31:34,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:31:34,812 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 19 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:34,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:31:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 02:31:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2022-11-22 02:31:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:34,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-22 02:31:34,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 6 [2022-11-22 02:31:34,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:34,824 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-22 02:31:34,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:34,825 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-22 02:31:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:31:34,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:34,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:34,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:31:34,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:34,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash 861512444, now seen corresponding path program 1 times [2022-11-22 02:31:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643711419] [2022-11-22 02:31:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:34,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:35,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:35,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:35,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643711419] [2022-11-22 02:31:35,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643711419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:35,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:35,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:31:35,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72401752] [2022-11-22 02:31:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:35,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:31:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:31:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:31:35,194 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:35,331 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-22 02:31:35,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:31:35,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:31:35,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:35,332 INFO L225 Difference]: With dead ends: 31 [2022-11-22 02:31:35,333 INFO L226 Difference]: Without dead ends: 30 [2022-11-22 02:31:35,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:31:35,334 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:35,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 30 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:31:35,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-22 02:31:35,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2022-11-22 02:31:35,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-22 02:31:35,339 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 7 [2022-11-22 02:31:35,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:35,340 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-22 02:31:35,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,340 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-22 02:31:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:31:35,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:35,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:35,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:31:35,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 861514174, now seen corresponding path program 1 times [2022-11-22 02:31:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:35,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861463064] [2022-11-22 02:31:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:35,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:35,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:35,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861463064] [2022-11-22 02:31:35,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861463064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:35,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:35,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:31:35,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086820473] [2022-11-22 02:31:35,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:35,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:31:35,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:31:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:31:35,478 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:35,531 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-22 02:31:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:31:35,532 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:31:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:35,533 INFO L225 Difference]: With dead ends: 22 [2022-11-22 02:31:35,533 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 02:31:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:31:35,534 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:35,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 16 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:31:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 02:31:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2022-11-22 02:31:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-11-22 02:31:35,539 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 7 [2022-11-22 02:31:35,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:35,539 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-11-22 02:31:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-11-22 02:31:35,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:31:35,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:35,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:35,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:31:35,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:35,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:35,542 INFO L85 PathProgramCache]: Analyzing trace with hash 937082058, now seen corresponding path program 1 times [2022-11-22 02:31:35,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:35,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094211510] [2022-11-22 02:31:35,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:35,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:35,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:35,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094211510] [2022-11-22 02:31:35,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094211510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:35,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:35,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:31:35,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196587472] [2022-11-22 02:31:35,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:35,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:31:35,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:35,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:31:35,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:31:35,702 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:35,744 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2022-11-22 02:31:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:31:35,745 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:31:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:35,746 INFO L225 Difference]: With dead ends: 18 [2022-11-22 02:31:35,746 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 02:31:35,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:31:35,749 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 27 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:35,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 9 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:31:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 02:31:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 02:31:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-22 02:31:35,760 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 8 [2022-11-22 02:31:35,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:35,761 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-22 02:31:35,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:35,761 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-22 02:31:35,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:31:35,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:35,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:35,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:31:35,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:35,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1355719719, now seen corresponding path program 1 times [2022-11-22 02:31:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:35,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939268551] [2022-11-22 02:31:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:35,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:35,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:35,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939268551] [2022-11-22 02:31:35,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939268551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:35,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950746192] [2022-11-22 02:31:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:35,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:35,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:35,941 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:35,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:31:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:36,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 02:31:36,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:36,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:31:36,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:36,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:31:36,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:36,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:36,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950746192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470899909] [2022-11-22 02:31:36,275 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-22 02:31:36,275 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:31:36,279 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:31:36,284 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:31:36,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:31:36,388 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-22 02:31:36,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-22 02:31:36,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:31:36,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2022-11-22 02:31:36,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-11-22 02:31:36,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:36,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 51 [2022-11-22 02:31:36,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:37,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:37,201 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:31:39,156 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '370#(and (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (not (<= (* 2 |ULTIMATE.start_test_fun_#t~mem10#1|) 2147483647)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet13#1|)) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem10#1|) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:31:39,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:31:39,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:31:39,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-11-22 02:31:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645975128] [2022-11-22 02:31:39,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:31:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:39,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:31:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:31:39,159 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:39,320 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2022-11-22 02:31:39,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:31:39,323 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 02:31:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:39,325 INFO L225 Difference]: With dead ends: 44 [2022-11-22 02:31:39,325 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 02:31:39,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:31:39,326 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 50 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:39,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 41 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:31:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 02:31:39,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 29. [2022-11-22 02:31:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-22 02:31:39,333 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2022-11-22 02:31:39,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:39,333 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-22 02:31:39,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.090909090909091) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-22 02:31:39,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:31:39,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:39,334 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:39,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:31:39,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:39,536 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash 922360003, now seen corresponding path program 1 times [2022-11-22 02:31:39,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:39,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384487785] [2022-11-22 02:31:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:39,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:39,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:39,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384487785] [2022-11-22 02:31:39,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384487785] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:39,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65657870] [2022-11-22 02:31:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:39,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:39,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:39,824 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:39,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:31:39,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:39,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 02:31:39,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:39,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:31:39,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:40,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:31:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:40,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:40,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65657870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1263471703] [2022-11-22 02:31:40,463 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:31:40,463 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:31:40,464 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:31:40,464 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:31:40,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:31:40,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:31:40,502 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:31:40,536 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-22 02:31:40,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 33 [2022-11-22 02:31:40,602 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-22 02:31:40,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-22 02:31:40,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:31:40,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:40,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:40,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:40,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-11-22 02:31:40,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:40,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:40,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:40,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 58 [2022-11-22 02:31:40,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:41,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:41,179 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:31:42,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '547#(and (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem11#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet13#1|)) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (not (<= |ULTIMATE.start_test_fun_#t~mem11#1| 2147483648)))' at error location [2022-11-22 02:31:42,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:31:42,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:31:42,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2022-11-22 02:31:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063798493] [2022-11-22 02:31:42,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:42,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:31:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:31:42,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:31:42,394 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:43,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:43,034 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2022-11-22 02:31:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:31:43,035 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-22 02:31:43,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:43,036 INFO L225 Difference]: With dead ends: 49 [2022-11-22 02:31:43,036 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:31:43,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 02:31:43,037 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 79 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:43,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 29 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:31:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:31:43,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 29. [2022-11-22 02:31:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-22 02:31:43,045 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 11 [2022-11-22 02:31:43,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:43,045 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-22 02:31:43,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:43,046 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-22 02:31:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:31:43,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:43,047 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:43,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:43,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:43,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:43,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:43,254 INFO L85 PathProgramCache]: Analyzing trace with hash -774237743, now seen corresponding path program 2 times [2022-11-22 02:31:43,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:43,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205904161] [2022-11-22 02:31:43,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:43,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:43,720 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:43,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:43,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205904161] [2022-11-22 02:31:43,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205904161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:43,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187345745] [2022-11-22 02:31:43,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:31:43,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:43,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:43,723 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:43,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:31:43,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 02:31:43,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:43,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 02:31:43,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:43,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:31:43,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:43,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:43,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:44,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:31:44,122 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:44,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:44,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187345745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:44,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [411377186] [2022-11-22 02:31:44,786 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:31:44,788 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:31:44,789 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:31:44,789 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:31:44,789 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:31:44,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:31:44,820 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:31:44,849 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-22 02:31:44,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 33 [2022-11-22 02:31:44,896 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-22 02:31:44,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:31:44,951 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-22 02:31:44,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-22 02:31:45,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:45,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:45,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:45,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-11-22 02:31:45,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:45,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:45,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:45,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 58 [2022-11-22 02:31:45,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:45,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:45,495 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:31:46,752 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '816#(and (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem11#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet13#1|)) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (not (<= |ULTIMATE.start_test_fun_#t~mem11#1| 2147483648)))' at error location [2022-11-22 02:31:46,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:31:46,753 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:31:46,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 27 [2022-11-22 02:31:46,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215623546] [2022-11-22 02:31:46,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:46,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-22 02:31:46,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:46,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-22 02:31:46,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1006, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:31:46,755 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:49,088 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2022-11-22 02:31:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-22 02:31:49,088 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-22 02:31:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:49,089 INFO L225 Difference]: With dead ends: 83 [2022-11-22 02:31:49,089 INFO L226 Difference]: Without dead ends: 82 [2022-11-22 02:31:49,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=956, Invalid=4014, Unknown=0, NotChecked=0, Total=4970 [2022-11-22 02:31:49,092 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 223 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:49,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 37 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:31:49,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-22 02:31:49,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 40. [2022-11-22 02:31:49,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:49,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-11-22 02:31:49,099 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 19 [2022-11-22 02:31:49,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:49,100 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-11-22 02:31:49,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.8148148148148149) internal successors, (49), 28 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:49,100 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-11-22 02:31:49,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:31:49,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:49,101 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2022-11-22 02:31:49,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 02:31:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 02:31:49,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:49,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1290600220, now seen corresponding path program 2 times [2022-11-22 02:31:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:49,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145924798] [2022-11-22 02:31:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:49,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:49,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:49,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145924798] [2022-11-22 02:31:49,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145924798] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:49,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092695221] [2022-11-22 02:31:49,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:31:49,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:49,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:49,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:49,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:31:49,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 02:31:49,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:49,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:31:49,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:49,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:31:49,927 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-22 02:31:49,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:31:49,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092695221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:49,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:31:49,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2022-11-22 02:31:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880365424] [2022-11-22 02:31:49,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:31:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:49,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:31:49,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:31:49,930 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:49,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:49,969 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-22 02:31:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:31:49,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-22 02:31:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:49,970 INFO L225 Difference]: With dead ends: 40 [2022-11-22 02:31:49,970 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 02:31:49,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:31:49,972 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:49,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 14 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:31:49,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 02:31:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 02:31:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.236842105263158) internal successors, (47), 38 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2022-11-22 02:31:49,978 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 22 [2022-11-22 02:31:49,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:49,978 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2022-11-22 02:31:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:31:49,979 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2022-11-22 02:31:49,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 02:31:49,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:49,980 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:49,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:31:50,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:50,185 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:31:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1753692653, now seen corresponding path program 3 times [2022-11-22 02:31:50,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:50,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107778004] [2022-11-22 02:31:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:50,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:51,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:51,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107778004] [2022-11-22 02:31:51,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107778004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:31:51,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527379794] [2022-11-22 02:31:51,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:31:51,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:31:51,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:51,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:31:51,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:31:51,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:31:51,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:31:51,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-22 02:31:51,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:31:51,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:31:51,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:31:51,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:31:51,736 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:51,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:31:53,397 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:31:53,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527379794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:31:53,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [429405644] [2022-11-22 02:31:53,400 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:31:53,401 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:31:53,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:31:53,401 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:31:53,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:31:53,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:31:53,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:31:53,466 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-22 02:31:53,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 33 [2022-11-22 02:31:53,511 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-22 02:31:53,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:31:53,561 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-22 02:31:53,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-22 02:31:53,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:53,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:53,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-11-22 02:31:53,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:53,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:53,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:31:53,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 58 [2022-11-22 02:31:53,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:53,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:31:54,016 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:31:55,296 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1471#(and (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem11#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet13#1|)) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (not (<= |ULTIMATE.start_test_fun_#t~mem11#1| 2147483648)))' at error location [2022-11-22 02:31:55,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:31:55,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:31:55,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 47 [2022-11-22 02:31:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327539123] [2022-11-22 02:31:55,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:31:55,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 02:31:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:55,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 02:31:55,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=2416, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 02:31:55,300 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand has 48 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 48 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:00,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:32:00,869 INFO L93 Difference]: Finished difference Result 151 states and 182 transitions. [2022-11-22 02:32:00,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-22 02:32:00,870 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 48 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-22 02:32:00,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:32:00,871 INFO L225 Difference]: With dead ends: 151 [2022-11-22 02:32:00,871 INFO L226 Difference]: Without dead ends: 150 [2022-11-22 02:32:00,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5888 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3288, Invalid=13224, Unknown=0, NotChecked=0, Total=16512 [2022-11-22 02:32:00,877 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 444 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:32:00,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 36 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:32:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-22 02:32:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 71. [2022-11-22 02:32:00,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:00,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2022-11-22 02:32:00,889 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 35 [2022-11-22 02:32:00,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:32:00,889 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2022-11-22 02:32:00,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 1.9787234042553192) internal successors, (93), 48 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2022-11-22 02:32:00,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 02:32:00,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:32:00,891 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2022-11-22 02:32:00,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:32:01,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:32:01,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:32:01,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:32:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2115920421, now seen corresponding path program 4 times [2022-11-22 02:32:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:32:01,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94538529] [2022-11-22 02:32:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:32:01,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:32:01,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:32:04,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:32:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94538529] [2022-11-22 02:32:04,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94538529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:32:04,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917691911] [2022-11-22 02:32:04,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:32:04,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:32:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:32:04,213 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:32:04,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:32:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:04,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-22 02:32:04,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:04,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 02:32:04,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:04,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:05,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-11-22 02:32:05,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:32:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:32:05,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:32:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:32:09,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917691911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:32:09,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1366888807] [2022-11-22 02:32:09,005 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:32:09,005 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:32:09,005 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:32:09,006 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:32:09,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:32:09,057 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-22 02:32:09,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:32:09,109 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-22 02:32:09,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-22 02:32:09,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 22 [2022-11-22 02:32:09,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-11-22 02:32:09,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:09,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 48 [2022-11-22 02:32:09,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:32:09,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:32:09,523 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:32:11,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2375#(and (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem11#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x#1|) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= 0 |ULTIMATE.start_test_fun_#in~x#1|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_#t~nondet13#1|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (not (<= |ULTIMATE.start_test_fun_#t~mem11#1| 2147483648)))' at error location [2022-11-22 02:32:11,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:32:11,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:32:11,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35, 35] total 86 [2022-11-22 02:32:11,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094450350] [2022-11-22 02:32:11,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:32:11,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-22 02:32:11,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:32:11,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-22 02:32:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1996, Invalid=6934, Unknown=0, NotChecked=0, Total=8930 [2022-11-22 02:32:11,674 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 87 states, 86 states have (on average 2.104651162790698) internal successors, (181), 87 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:32:21,932 INFO L93 Difference]: Finished difference Result 290 states and 351 transitions. [2022-11-22 02:32:21,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2022-11-22 02:32:21,933 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 2.104651162790698) internal successors, (181), 87 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-22 02:32:21,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:32:21,934 INFO L225 Difference]: With dead ends: 290 [2022-11-22 02:32:21,935 INFO L226 Difference]: Without dead ends: 289 [2022-11-22 02:32:21,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20661 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=11236, Invalid=42820, Unknown=0, NotChecked=0, Total=54056 [2022-11-22 02:32:21,942 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 757 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:32:21,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 63 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:32:21,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-22 02:32:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 131. [2022-11-22 02:32:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.2461538461538462) internal successors, (162), 130 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2022-11-22 02:32:21,960 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 67 [2022-11-22 02:32:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:32:21,961 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2022-11-22 02:32:21,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 2.104651162790698) internal successors, (181), 87 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2022-11-22 02:32:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-22 02:32:21,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:32:21,965 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2022-11-22 02:32:21,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 02:32:22,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:32:22,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-22 02:32:22,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:32:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1249465806, now seen corresponding path program 5 times [2022-11-22 02:32:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:32:22,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518253191] [2022-11-22 02:32:22,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:32:22,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:32:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 1583 proven. 81 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-22 02:32:31,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:32:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518253191] [2022-11-22 02:32:31,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518253191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:32:31,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125756571] [2022-11-22 02:32:31,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:32:31,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:32:31,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:32:31,182 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:32:31,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:32:35,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 31 check-sat command(s) [2022-11-22 02:32:35,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:32:35,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-22 02:32:35,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:35,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-22 02:32:35,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:35,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:35,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:35,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2022-11-22 02:32:35,065 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 02:32:35,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-22 02:32:35,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 02:32:35,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 02:32:35,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-11-22 02:32:35,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:32:36,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 1740 trivial. 0 not checked. [2022-11-22 02:32:36,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125756571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:32:36,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2017664513] [2022-11-22 02:32:36,385 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:32:36,385 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:32:36,386 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:32:36,386 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:32:36,386 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:32:36,436 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-22 02:32:36,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:32:36,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:32:36,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:32:36,486 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-22 02:32:36,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 33 [2022-11-22 02:32:36,542 INFO L321 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-22 02:32:36,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 45 [2022-11-22 02:32:36,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:36,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:36,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:36,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-11-22 02:32:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:36,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:36,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:32:36,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 58 [2022-11-22 02:32:36,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:32:36,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2022-11-22 02:32:36,926 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:32:38,014 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3974#(and (= (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) |ULTIMATE.start_test_fun_#t~mem11#1|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~y#1|)) (<= |ULTIMATE.start_main_#t~nondet13#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc2#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc4#1.base|) (<= 0 |ULTIMATE.start_test_fun_#t~malloc2#1.base|) (<= |ULTIMATE.start_test_fun_~y#1| 2147483647) (<= |ULTIMATE.start_test_fun_~x#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet13#1|)) (<= |ULTIMATE.start_main_#t~nondet14#1| 2147483647) (<= 0 (+ |ULTIMATE.start_test_fun_~y#1| 2147483648)) (= |ULTIMATE.start_test_fun_#t~malloc3#1.offset| 0) (<= 0 (+ |ULTIMATE.start_test_fun_~x#1| 2147483648)) (<= |ULTIMATE.start_test_fun_~y_ref~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.base|) (<= 0 |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) (<= |ULTIMATE.start_test_fun_#in~y#1| 2147483647) (= |ULTIMATE.start_test_fun_#t~malloc4#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_#t~malloc3#1.base|) (<= |ULTIMATE.start_test_fun_~c~0#1.offset| 0) (<= 0 |ULTIMATE.start_test_fun_~c~0#1.offset|) (<= 0 (+ 2147483648 |ULTIMATE.start_test_fun_#in~x#1|)) (<= 0 |ULTIMATE.start_test_fun_~y_ref~0#1.offset|) (= |#NULL.offset| 0) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet14#1|)) (<= |ULTIMATE.start_test_fun_~x_ref~0#1.offset| 0) (<= |ULTIMATE.start_test_fun_#in~x#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (not (<= |ULTIMATE.start_test_fun_#t~mem11#1| 2147483648)))' at error location [2022-11-22 02:32:38,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:32:38,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:32:38,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 3, 3] total 52 [2022-11-22 02:32:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280209841] [2022-11-22 02:32:38,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:32:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-22 02:32:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:32:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-22 02:32:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=812, Invalid=2847, Unknown=1, NotChecked=0, Total=3660 [2022-11-22 02:32:38,017 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 54 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:32:38,160 INFO L93 Difference]: Finished difference Result 136 states and 167 transitions. [2022-11-22 02:32:38,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:32:38,161 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-11-22 02:32:38,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:32:38,162 INFO L225 Difference]: With dead ends: 136 [2022-11-22 02:32:38,162 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:32:38,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=970, Invalid=3061, Unknown=1, NotChecked=0, Total=4032 [2022-11-22 02:32:38,164 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 82 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:32:38,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 8 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:32:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:32:38,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:32:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:32:38,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 127 [2022-11-22 02:32:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:32:38,166 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:32:38,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:32:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:32:38,166 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:32:38,168 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-22 02:32:38,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-22 02:32:38,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-22 02:32:38,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-22 02:32:38,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-22 02:32:38,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:32:38,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:32:47,260 WARN L233 SmtUtils]: Spent 8.62s on a formula simplification. DAG size of input: 280 DAG size of output: 18 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-22 02:32:47,264 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 558) no Hoare annotation was computed. [2022-11-22 02:32:47,264 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 560) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point L560(line 560) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point L560-1(line 560) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point L558-1(line 558) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 558) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 560) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point L555-1(lines 555 561) no Hoare annotation was computed. [2022-11-22 02:32:47,265 INFO L899 garLoopResultBuilder]: For program point L557-3(lines 557 559) no Hoare annotation was computed. [2022-11-22 02:32:47,266 INFO L895 garLoopResultBuilder]: At program point L557-5(lines 557 559) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|))) (and (not (= |ULTIMATE.start_test_fun_~y_ref~0#1.base| |ULTIMATE.start_test_fun_~x_ref~0#1.base|)) (<= 1 (select (select |#memory_int| |ULTIMATE.start_test_fun_~y_ref~0#1.base|) |ULTIMATE.start_test_fun_~y_ref~0#1.offset|)) (<= .cse0 2147483647) (<= 0 .cse0))) [2022-11-22 02:32:47,266 INFO L895 garLoopResultBuilder]: At program point L555-3(lines 555 561) the Hoare annotation is: (and (not (= |ULTIMATE.start_test_fun_~y_ref~0#1.base| |ULTIMATE.start_test_fun_~x_ref~0#1.base|)) (<= (select (select |#memory_int| |ULTIMATE.start_test_fun_~x_ref~0#1.base|) |ULTIMATE.start_test_fun_~x_ref~0#1.offset|) 2147483647)) [2022-11-22 02:32:47,266 INFO L899 garLoopResultBuilder]: For program point L557-6(lines 557 559) no Hoare annotation was computed. [2022-11-22 02:32:47,266 INFO L902 garLoopResultBuilder]: At program point L555-4(lines 555 561) the Hoare annotation is: true [2022-11-22 02:32:47,268 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1] [2022-11-22 02:32:47,270 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:32:47,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:32:47 BoogieIcfgContainer [2022-11-22 02:32:47,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:32:47,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:32:47,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:32:47,286 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:32:47,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:33" (3/4) ... [2022-11-22 02:32:47,289 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:32:47,297 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-22 02:32:47,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 02:32:47,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:32:47,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:32:47,329 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:32:47,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:32:47,330 INFO L158 Benchmark]: Toolchain (without parser) took 74707.13ms. Allocated memory was 182.5MB in the beginning and 799.0MB in the end (delta: 616.6MB). Free memory was 136.9MB in the beginning and 689.9MB in the end (delta: -553.0MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,330 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory was 94.5MB in the beginning and 94.5MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:32:47,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 463.87ms. Allocated memory is still 182.5MB. Free memory was 136.9MB in the beginning and 121.1MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.85ms. Allocated memory is still 182.5MB. Free memory was 121.1MB in the beginning and 119.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,331 INFO L158 Benchmark]: Boogie Preprocessor took 26.81ms. Allocated memory is still 182.5MB. Free memory was 119.6MB in the beginning and 118.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,331 INFO L158 Benchmark]: RCFGBuilder took 519.79ms. Allocated memory is still 182.5MB. Free memory was 118.0MB in the beginning and 104.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,332 INFO L158 Benchmark]: TraceAbstraction took 73588.92ms. Allocated memory was 182.5MB in the beginning and 799.0MB in the end (delta: 616.6MB). Free memory was 103.9MB in the beginning and 693.0MB in the end (delta: -589.1MB). Peak memory consumption was 436.4MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,332 INFO L158 Benchmark]: Witness Printer took 43.80ms. Allocated memory is still 799.0MB. Free memory was 693.0MB in the beginning and 689.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:32:47,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 125.8MB. Free memory was 94.5MB in the beginning and 94.5MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 463.87ms. Allocated memory is still 182.5MB. Free memory was 136.9MB in the beginning and 121.1MB in the end (delta: 15.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.85ms. Allocated memory is still 182.5MB. Free memory was 121.1MB in the beginning and 119.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.81ms. Allocated memory is still 182.5MB. Free memory was 119.6MB in the beginning and 118.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 519.79ms. Allocated memory is still 182.5MB. Free memory was 118.0MB in the beginning and 104.3MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 73588.92ms. Allocated memory was 182.5MB in the beginning and 799.0MB in the end (delta: 616.6MB). Free memory was 103.9MB in the beginning and 693.0MB in the end (delta: -589.1MB). Peak memory consumption was 436.4MB. Max. memory is 16.1GB. * Witness Printer took 43.80ms. Allocated memory is still 799.0MB. Free memory was 693.0MB in the beginning and 689.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 558]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 558]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 560]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 560]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 73.5s, OverallIterations: 12, TraceHistogramMax: 31, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1725 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1725 mSDsluCounter, 317 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 255 mSDsCounter, 525 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1492 IncrementalHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 525 mSolverCounterUnsat, 62 mSDtfsCounter, 1492 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1273 GetRequests, 686 SyntacticMatches, 4 SemanticMatches, 583 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30236 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=11, InterpolantAutomatonStates: 330, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 333 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 37 NumberOfFragments, 39 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1281 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 3 FomulaSimplificationsInter, 6721 FormulaSimplificationTreeSizeReductionInter, 8.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 25.0s InterpolantComputationTime, 616 NumberOfCodeBlocks, 600 NumberOfCodeBlocksAsserted, 53 NumberOfCheckSat, 860 ConstructedInterpolants, 234 QuantifiedInterpolants, 11008 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1625 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 25 InterpolantComputations, 6 PerfectInterpolantSequences, 5235/7185 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 557]: Loop Invariant Derived loop invariant: ((!(y_ref == x_ref) && 1 <= unknown-#memory_int-unknown[y_ref][y_ref]) && unknown-#memory_int-unknown[x_ref][x_ref] <= 2147483647) && 0 <= unknown-#memory_int-unknown[x_ref][x_ref] - InvariantResult [Line: 555]: Loop Invariant Derived loop invariant: !(y_ref == x_ref) && unknown-#memory_int-unknown[x_ref][x_ref] <= 2147483647 - InvariantResult [Line: 555]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-22 02:32:47,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3ebbd00-9629-4687-a042-3d006781fbea/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE