./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/reducercommutativity/sep05-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/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_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/reducercommutativity/sep05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/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 32bit --witnessprinter.graph.data.programhash ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 --- 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 01:08:01,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:08:01,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:08:01,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:08:01,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:08:01,074 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:08:01,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:08:01,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:08:01,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:08:01,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:08:01,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:08:01,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:08:01,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:08:01,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:08:01,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:08:01,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:08:01,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:08:01,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:08:01,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:08:01,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:08:01,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:08:01,105 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:08:01,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:08:01,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:08:01,111 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:08:01,112 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:08:01,112 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:08:01,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:08:01,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:08:01,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:08:01,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:08:01,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:08:01,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:08:01,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:08:01,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:08:01,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:08:01,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:08:01,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:08:01,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:08:01,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:08:01,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:08:01,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 01:08:01,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:08:01,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:08:01,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:08:01,156 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:08:01,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:08:01,157 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:08:01,157 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:08:01,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:08:01,158 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:08:01,158 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:08:01,159 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:08:01,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:08:01,159 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:08:01,160 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:08:01,160 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:08:01,160 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:08:01,161 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:08:01,161 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:08:01,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:08:01,162 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:08:01,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 01:08:01,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:08:01,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:08:01,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:08:01,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:08:01,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:08:01,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:08:01,165 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 01:08:01,165 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:08:01,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:08:01,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:08:01,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:08:01,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:08:01,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:08:01,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:08:01,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:08:01,168 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:08:01,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:08:01,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:08:01,169 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:08:01,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:08:01,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:08:01,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:08:01,170 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_9b1fb014-5ff2-404b-92db-7360d85b341a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac50477087b7e2b9c80860ad42d4d46d99ddf32e797cee205c21d5ff44f08ec3 [2022-11-22 01:08:01,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:08:01,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:08:01,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:08:01,563 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:08:01,563 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:08:01,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-11-22 01:08:04,905 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:08:05,178 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:08:05,178 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/sv-benchmarks/c/reducercommutativity/sep05-1.i [2022-11-22 01:08:05,188 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/data/f31ae36b9/ecb40b6f7c754d968d93b886b865bec2/FLAG7658368c9 [2022-11-22 01:08:05,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/data/f31ae36b9/ecb40b6f7c754d968d93b886b865bec2 [2022-11-22 01:08:05,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:08:05,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:08:05,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:08:05,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:08:05,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:08:05,219 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa8ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05, skipping insertion in model container [2022-11-22 01:08:05,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:08:05,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:08:05,517 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2022-11-22 01:08:05,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:08:05,529 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:08:05,575 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/sv-benchmarks/c/reducercommutativity/sep05-1.i[1287,1300] [2022-11-22 01:08:05,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:08:05,600 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:08:05,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05 WrapperNode [2022-11-22 01:08:05,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:08:05,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:08:05,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:08:05,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:08:05,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,639 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,669 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2022-11-22 01:08:05,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:08:05,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:08:05,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:08:05,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:08:05,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,686 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,712 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:08:05,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:08:05,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:08:05,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:08:05,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (1/1) ... [2022-11-22 01:08:05,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:08:05,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:05,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:08:05,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:08:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:08:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:08:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:08:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:08:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:08:05,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:08:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:08:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:08:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure sep [2022-11-22 01:08:05,824 INFO L138 BoogieDeclarations]: Found implementation of procedure sep [2022-11-22 01:08:05,934 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:08:05,937 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:08:06,169 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:08:06,217 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:08:06,217 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 01:08:06,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:06 BoogieIcfgContainer [2022-11-22 01:08:06,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:08:06,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:08:06,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:08:06,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:08:06,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:05" (1/3) ... [2022-11-22 01:08:06,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bb988b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:06, skipping insertion in model container [2022-11-22 01:08:06,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:05" (2/3) ... [2022-11-22 01:08:06,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bb988b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:06, skipping insertion in model container [2022-11-22 01:08:06,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:06" (3/3) ... [2022-11-22 01:08:06,232 INFO L112 eAbstractionObserver]: Analyzing ICFG sep05-1.i [2022-11-22 01:08:06,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:08:06,257 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-22 01:08:06,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:08:06,331 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;@2f374efc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:08:06,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-22 01:08:06,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:08:06,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 01:08:06,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:06,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 01:08:06,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:06,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash 127950, now seen corresponding path program 1 times [2022-11-22 01:08:06,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:06,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794133367] [2022-11-22 01:08:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:06,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:06,739 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 01:08:06,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:06,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794133367] [2022-11-22 01:08:06,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794133367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:06,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:06,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:08:06,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862093244] [2022-11-22 01:08:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:08:06,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:06,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:08:06,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:08:06,804 INFO L87 Difference]: Start difference. First operand has 39 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 34 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 01:08:06,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:06,958 INFO L93 Difference]: Finished difference Result 77 states and 87 transitions. [2022-11-22 01:08:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:08:06,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-22 01:08:06,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:06,979 INFO L225 Difference]: With dead ends: 77 [2022-11-22 01:08:06,979 INFO L226 Difference]: Without dead ends: 40 [2022-11-22 01:08:06,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:06,993 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:06,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 104 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:07,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-22 01:08:07,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-22 01:08:07,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 36 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-11-22 01:08:07,054 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 3 [2022-11-22 01:08:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:07,055 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-11-22 01:08:07,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 01:08:07,055 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-11-22 01:08:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 01:08:07,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:07,056 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 01:08:07,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:08:07,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -483160659, now seen corresponding path program 1 times [2022-11-22 01:08:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562695590] [2022-11-22 01:08:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:08:07,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562695590] [2022-11-22 01:08:07,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562695590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:07,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:07,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:08:07,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88427640] [2022-11-22 01:08:07,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:07,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:07,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:07,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:07,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:07,140 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 01:08:07,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:07,169 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-22 01:08:07,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:07,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 01:08:07,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:07,171 INFO L225 Difference]: With dead ends: 40 [2022-11-22 01:08:07,171 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 01:08:07,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:08:07,174 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:07,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 64 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:07,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 01:08:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 01:08:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 24 states have (on average 1.625) internal successors, (39), 35 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2022-11-22 01:08:07,188 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 6 [2022-11-22 01:08:07,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:07,189 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2022-11-22 01:08:07,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 01:08:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2022-11-22 01:08:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 01:08:07,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:07,192 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-22 01:08:07,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:08:07,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:07,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:07,199 INFO L85 PathProgramCache]: Analyzing trace with hash -2093078495, now seen corresponding path program 1 times [2022-11-22 01:08:07,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:07,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218929231] [2022-11-22 01:08:07,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:07,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:07,360 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 01:08:07,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:07,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218929231] [2022-11-22 01:08:07,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218929231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213920597] [2022-11-22 01:08:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:07,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:07,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:07,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:08:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:07,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:07,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:07,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:07,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213920597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:07,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:07,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-22 01:08:07,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385572724] [2022-11-22 01:08:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:07,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:08:07,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:08:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:07,607 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 01:08:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:07,653 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-22 01:08:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:08:07,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 01:08:07,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:07,655 INFO L225 Difference]: With dead ends: 39 [2022-11-22 01:08:07,655 INFO L226 Difference]: Without dead ends: 38 [2022-11-22 01:08:07,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:08:07,657 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 15 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:07,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:07,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-22 01:08:07,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-22 01:08:07,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 32 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-22 01:08:07,670 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 7 [2022-11-22 01:08:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:07,670 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-22 01:08:07,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 01:08:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-22 01:08:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:08:07,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:07,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:07,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:08:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:07,883 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:07,884 INFO L85 PathProgramCache]: Analyzing trace with hash -322008546, now seen corresponding path program 1 times [2022-11-22 01:08:07,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:07,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037544118] [2022-11-22 01:08:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:08,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:08,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037544118] [2022-11-22 01:08:08,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037544118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:08,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159144716] [2022-11-22 01:08:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:08,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:08,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:08,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:08,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:08:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:08,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:08,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:08,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:08,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:08,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159144716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:08,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311519812] [2022-11-22 01:08:08,330 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:08:08,331 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:08,340 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:08,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:08,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:08,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,497 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:08,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:08,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:08,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:08,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:08,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:08,987 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-22 01:08:08,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-22 01:08:09,135 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 15 treesize of output 11 [2022-11-22 01:08:09,176 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:09,190 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:09,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [311519812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:09,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:09,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 17 [2022-11-22 01:08:09,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919170281] [2022-11-22 01:08:09,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:09,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:08:09,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:08:09,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:08:09,704 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 10 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:10,126 INFO L93 Difference]: Finished difference Result 74 states and 88 transitions. [2022-11-22 01:08:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:08:10,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 01:08:10,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:10,129 INFO L225 Difference]: With dead ends: 74 [2022-11-22 01:08:10,129 INFO L226 Difference]: Without dead ends: 44 [2022-11-22 01:08:10,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:08:10,131 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:10,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 78 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:10,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-22 01:08:10,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2022-11-22 01:08:10,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 36 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2022-11-22 01:08:10,143 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 10 [2022-11-22 01:08:10,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:10,144 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2022-11-22 01:08:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2022-11-22 01:08:10,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 01:08:10,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:10,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:10,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:10,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:10,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:10,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash -322008354, now seen corresponding path program 1 times [2022-11-22 01:08:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:10,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765438890] [2022-11-22 01:08:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:10,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:10,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:10,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:10,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765438890] [2022-11-22 01:08:10,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765438890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:10,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43577442] [2022-11-22 01:08:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:10,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:10,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:10,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:10,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:08:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:10,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:10,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:10,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:10,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43577442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:10,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [854229772] [2022-11-22 01:08:10,620 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 01:08:10,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:10,620 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:10,621 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:10,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:10,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,656 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:10,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:10,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:10,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:10,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:10,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:10,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:10,901 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-22 01:08:10,902 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-22 01:08:11,014 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 15 treesize of output 11 [2022-11-22 01:08:11,068 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:11,082 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:11,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [854229772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:11,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:11,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 4, 4] total 17 [2022-11-22 01:08:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176451473] [2022-11-22 01:08:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:11,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:08:11,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:08:11,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-22 01:08:11,600 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 10 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:11,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:11,915 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-11-22 01:08:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:08:11,916 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 01:08:11,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:11,917 INFO L225 Difference]: With dead ends: 44 [2022-11-22 01:08:11,917 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 01:08:11,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-22 01:08:11,919 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:11,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 79 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:11,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 01:08:11,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-22 01:08:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.5357142857142858) internal successors, (43), 38 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-22 01:08:11,928 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 10 [2022-11-22 01:08:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:11,929 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-22 01:08:11,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-22 01:08:11,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:08:11,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:11,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:11,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:12,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:12,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:12,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2000447915, now seen corresponding path program 1 times [2022-11-22 01:08:12,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026511062] [2022-11-22 01:08:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:12,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:12,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:12,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026511062] [2022-11-22 01:08:12,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026511062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:12,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510851997] [2022-11-22 01:08:12,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:12,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:12,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:12,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:08:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:12,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:12,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:12,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:12,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510851997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:12,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1451211943] [2022-11-22 01:08:12,361 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:08:12,361 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:12,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:12,362 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:12,363 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:12,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,417 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:12,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:12,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:12,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:12,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:12,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:12,647 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-22 01:08:12,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-22 01:08:12,743 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 15 treesize of output 11 [2022-11-22 01:08:12,779 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:12,807 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:13,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1451211943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:13,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:13,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 19 [2022-11-22 01:08:13,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263463562] [2022-11-22 01:08:13,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:13,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:08:13,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:08:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:08:13,410 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:13,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:13,791 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-11-22 01:08:13,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:08:13,792 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:08:13,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:13,793 INFO L225 Difference]: With dead ends: 47 [2022-11-22 01:08:13,793 INFO L226 Difference]: Without dead ends: 45 [2022-11-22 01:08:13,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:08:13,795 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 51 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:13,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 105 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:13,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-22 01:08:13,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-22 01:08:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:13,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-22 01:08:13,804 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-11-22 01:08:13,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:13,804 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-22 01:08:13,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-22 01:08:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:08:13,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:13,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:13,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:14,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:08:14,012 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:14,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2006173553, now seen corresponding path program 1 times [2022-11-22 01:08:14,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:14,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117890535] [2022-11-22 01:08:14,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:14,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:14,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:14,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:14,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117890535] [2022-11-22 01:08:14,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117890535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:14,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009504798] [2022-11-22 01:08:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:14,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:14,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:08:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:14,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:14,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:14,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:14,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:08:14,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009504798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:14,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [112724399] [2022-11-22 01:08:14,211 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-22 01:08:14,211 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:14,212 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:14,212 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:14,212 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:14,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,241 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:08:14,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:08:14,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,270 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:14,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:14,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:14,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-22 01:08:14,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:14,482 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-22 01:08:14,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-11-22 01:08:14,546 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 15 treesize of output 11 [2022-11-22 01:08:14,572 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:14,599 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:15,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [112724399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:15,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:15,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 4, 4] total 19 [2022-11-22 01:08:15,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514060800] [2022-11-22 01:08:15,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:15,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:08:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:15,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:08:15,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-22 01:08:15,119 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:15,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:15,484 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-11-22 01:08:15,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:08:15,484 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 01:08:15,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:15,485 INFO L225 Difference]: With dead ends: 50 [2022-11-22 01:08:15,485 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:08:15,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-22 01:08:15,486 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 47 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:15,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 126 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:08:15,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:08:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-11-22 01:08:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.4838709677419355) internal successors, (46), 41 states have internal predecessors, (46), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2022-11-22 01:08:15,494 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 13 [2022-11-22 01:08:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:15,495 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2022-11-22 01:08:15,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2022-11-22 01:08:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:08:15,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:15,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:15,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:15,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1249859482, now seen corresponding path program 1 times [2022-11-22 01:08:15,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:15,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418476955] [2022-11-22 01:08:15,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:08:15,768 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418476955] [2022-11-22 01:08:15,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418476955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:15,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166785082] [2022-11-22 01:08:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:15,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:15,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:15,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:15,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:08:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:15,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:15,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:08:15,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:15,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:08:15,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166785082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:15,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1542315730] [2022-11-22 01:08:15,898 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-22 01:08:15,898 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:15,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:15,899 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:15,899 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:15,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:15,946 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:15,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:15,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:15,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:15,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:16,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:16,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-22 01:08:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:16,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:16,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:16,137 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:16,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:16,154 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-22 01:08:16,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-22 01:08:16,239 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 15 treesize of output 11 [2022-11-22 01:08:16,265 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:16,563 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:18,390 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1312#(and (<= 0 |sep_#in~x.offset|) (< sep_~i~0 5) (<= 0 |#NULL.base|) (<= 0 |sep_#in~x.base|) (<= |sep_#in~x.offset| 0) (<= |#NULL.offset| 0) (<= 1 sep_~i~0) (not (<= |sep_#t~post3| 9223372036854775806)) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~x.offset) (<= |#NULL.base| 0) (= (ite (and (< (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 0) (not (= (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2) 0))) (+ (- 2) (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2)) (mod (select (select |#memory_int| sep_~x.base) (+ sep_~x.offset (* sep_~i~0 4))) 2)) 0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-22 01:08:18,390 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:18,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:18,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-22 01:08:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636744412] [2022-11-22 01:08:18,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:18,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:08:18,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:08:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:08:18,392 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:18,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:18,464 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2022-11-22 01:08:18,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:08:18,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-22 01:08:18,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:18,465 INFO L225 Difference]: With dead ends: 91 [2022-11-22 01:08:18,465 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 01:08:18,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:08:18,467 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:18,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 194 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:18,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 01:08:18,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-22 01:08:18,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 47 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-22 01:08:18,476 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 17 [2022-11-22 01:08:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-22 01:08:18,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-22 01:08:18,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:08:18,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:18,478 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:18,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 01:08:18,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:18,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:18,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash -591773894, now seen corresponding path program 2 times [2022-11-22 01:08:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:18,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027679514] [2022-11-22 01:08:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:08:18,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:18,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027679514] [2022-11-22 01:08:18,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027679514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:18,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493115280] [2022-11-22 01:08:18,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:08:18,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:18,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:18,833 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:18,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:08:18,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:08:18,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:08:18,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:08:18,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:08:18,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:08:19,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493115280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:19,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [813287218] [2022-11-22 01:08:19,012 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-22 01:08:19,013 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:19,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:19,013 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:19,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:19,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,035 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:08:19,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:08:19,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,059 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:19,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:19,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:19,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:19,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:19,232 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-22 01:08:19,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-22 01:08:19,350 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 15 treesize of output 11 [2022-11-22 01:08:19,377 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:19,605 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:20,524 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1644#(and (<= 0 |sep_#in~x.base|) (not (<= |sep_#t~post3| 9223372036854775806)) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:20,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:20,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:20,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-22 01:08:20,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353420083] [2022-11-22 01:08:20,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:20,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:08:20,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:20,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:08:20,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:08:20,527 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:20,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:20,713 INFO L93 Difference]: Finished difference Result 95 states and 112 transitions. [2022-11-22 01:08:20,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 01:08:20,714 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 01:08:20,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:20,717 INFO L225 Difference]: With dead ends: 95 [2022-11-22 01:08:20,717 INFO L226 Difference]: Without dead ends: 94 [2022-11-22 01:08:20,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:08:20,719 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 54 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:20,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 165 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:20,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-22 01:08:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 71. [2022-11-22 01:08:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 67 states have internal predecessors, (84), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2022-11-22 01:08:20,731 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 23 [2022-11-22 01:08:20,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:20,732 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2022-11-22 01:08:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 12 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:20,732 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2022-11-22 01:08:20,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 01:08:20,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:20,733 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:20,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-22 01:08:20,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:20,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:20,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:20,949 INFO L85 PathProgramCache]: Analyzing trace with hash -591773702, now seen corresponding path program 1 times [2022-11-22 01:08:20,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:20,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55485774] [2022-11-22 01:08:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:20,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:08:21,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:21,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55485774] [2022-11-22 01:08:21,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55485774] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:21,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252695360] [2022-11-22 01:08:21,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:21,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:21,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:21,031 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:21,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:08:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:21,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 01:08:21,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:08:21,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:08:21,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252695360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:21,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [23378631] [2022-11-22 01:08:21,293 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-22 01:08:21,293 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:21,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:21,294 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:21,294 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:21,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,329 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:21,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:21,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:21,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:21,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,504 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:21,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:21,520 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-22 01:08:21,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-22 01:08:21,595 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 15 treesize of output 11 [2022-11-22 01:08:21,645 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:21,829 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:22,955 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2012#(and (not (<= |sep_#t~post4| 9223372036854775808)) (<= 0 |sep_#in~x.base|) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:22,956 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:22,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:22,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2022-11-22 01:08:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226867629] [2022-11-22 01:08:22,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:22,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 01:08:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 01:08:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:08:22,958 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:23,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:23,207 INFO L93 Difference]: Finished difference Result 152 states and 193 transitions. [2022-11-22 01:08:23,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 01:08:23,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-22 01:08:23,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:23,211 INFO L225 Difference]: With dead ends: 152 [2022-11-22 01:08:23,211 INFO L226 Difference]: Without dead ends: 92 [2022-11-22 01:08:23,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 01:08:23,213 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 41 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:23,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 250 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:23,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-22 01:08:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2022-11-22 01:08:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 70 states have (on average 1.457142857142857) internal successors, (102), 80 states have internal predecessors, (102), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:23,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-11-22 01:08:23,230 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 23 [2022-11-22 01:08:23,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:23,230 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-11-22 01:08:23,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:23,231 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-11-22 01:08:23,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:08:23,232 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:23,232 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:23,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:23,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1360525728, now seen corresponding path program 1 times [2022-11-22 01:08:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:23,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441080161] [2022-11-22 01:08:23,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:23,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:23,546 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:23,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:23,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441080161] [2022-11-22 01:08:23,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441080161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:23,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827884343] [2022-11-22 01:08:23,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:23,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:23,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:23,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:23,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:08:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:23,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:08:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:23,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:23,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827884343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:23,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:23,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-22 01:08:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063571548] [2022-11-22 01:08:23,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:23,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:08:23,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:08:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:23,686 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:23,808 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2022-11-22 01:08:23,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:08:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-22 01:08:23,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:23,811 INFO L225 Difference]: With dead ends: 122 [2022-11-22 01:08:23,811 INFO L226 Difference]: Without dead ends: 120 [2022-11-22 01:08:23,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:08:23,814 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:23,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 184 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:23,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-22 01:08:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 98. [2022-11-22 01:08:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.5) internal successors, (126), 94 states have internal predecessors, (126), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:23,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2022-11-22 01:08:23,841 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 29 [2022-11-22 01:08:23,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:23,841 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2022-11-22 01:08:23,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:23,842 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2022-11-22 01:08:23,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:08:23,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:23,843 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:23,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:24,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 01:08:24,047 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:24,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:24,048 INFO L85 PathProgramCache]: Analyzing trace with hash 793570509, now seen corresponding path program 1 times [2022-11-22 01:08:24,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:24,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114384534] [2022-11-22 01:08:24,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:24,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:24,135 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:24,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:24,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114384534] [2022-11-22 01:08:24,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114384534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:24,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113448006] [2022-11-22 01:08:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:24,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:24,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:24,138 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:24,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:08:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:24,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:08:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:24,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:24,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113448006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:24,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:24,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-22 01:08:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172180135] [2022-11-22 01:08:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:08:24,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:24,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:08:24,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:24,272 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:24,342 INFO L93 Difference]: Finished difference Result 116 states and 153 transitions. [2022-11-22 01:08:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:08:24,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-22 01:08:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:24,344 INFO L225 Difference]: With dead ends: 116 [2022-11-22 01:08:24,344 INFO L226 Difference]: Without dead ends: 115 [2022-11-22 01:08:24,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:08:24,346 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 17 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:24,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 121 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-22 01:08:24,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 105. [2022-11-22 01:08:24,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 91 states have (on average 1.4945054945054945) internal successors, (136), 101 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 141 transitions. [2022-11-22 01:08:24,358 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 141 transitions. Word has length 30 [2022-11-22 01:08:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:24,359 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 141 transitions. [2022-11-22 01:08:24,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 141 transitions. [2022-11-22 01:08:24,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:08:24,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:24,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:24,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:24,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:24,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:24,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash 793576467, now seen corresponding path program 1 times [2022-11-22 01:08:24,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:24,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46948213] [2022-11-22 01:08:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:24,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:24,659 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:24,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46948213] [2022-11-22 01:08:24,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46948213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:24,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894873875] [2022-11-22 01:08:24,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:24,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:24,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:24,662 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:24,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:08:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:24,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:08:24,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:24,783 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:24,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:24,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894873875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:24,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:24,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-22 01:08:24,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301270426] [2022-11-22 01:08:24,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:24,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:08:24,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:24,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:08:24,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:24,786 INFO L87 Difference]: Start difference. First operand 105 states and 141 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:24,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:24,914 INFO L93 Difference]: Finished difference Result 145 states and 194 transitions. [2022-11-22 01:08:24,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:08:24,915 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-22 01:08:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:24,916 INFO L225 Difference]: With dead ends: 145 [2022-11-22 01:08:24,916 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 01:08:24,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-22 01:08:24,919 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 31 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:24,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 123 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 01:08:24,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 119. [2022-11-22 01:08:24,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 105 states have (on average 1.5142857142857142) internal successors, (159), 115 states have internal predecessors, (159), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 164 transitions. [2022-11-22 01:08:24,935 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 164 transitions. Word has length 30 [2022-11-22 01:08:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:24,937 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 164 transitions. [2022-11-22 01:08:24,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:24,937 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 164 transitions. [2022-11-22 01:08:24,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:08:24,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:24,941 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:24,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:25,148 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -773375289, now seen corresponding path program 1 times [2022-11-22 01:08:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419049279] [2022-11-22 01:08:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:25,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:25,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:25,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419049279] [2022-11-22 01:08:25,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419049279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:25,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127212565] [2022-11-22 01:08:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:25,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:25,273 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:25,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:08:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:25,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:25,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:25,395 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:25,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:25,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127212565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:25,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:25,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-11-22 01:08:25,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242455048] [2022-11-22 01:08:25,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:08:25,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:25,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:08:25,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:25,398 INFO L87 Difference]: Start difference. First operand 119 states and 164 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:25,447 INFO L93 Difference]: Finished difference Result 119 states and 164 transitions. [2022-11-22 01:08:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:08:25,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-22 01:08:25,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:25,450 INFO L225 Difference]: With dead ends: 119 [2022-11-22 01:08:25,450 INFO L226 Difference]: Without dead ends: 118 [2022-11-22 01:08:25,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:08:25,451 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 11 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:25,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 73 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-22 01:08:25,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2022-11-22 01:08:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 105 states have (on average 1.4952380952380953) internal successors, (157), 114 states have internal predecessors, (157), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 162 transitions. [2022-11-22 01:08:25,464 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 162 transitions. Word has length 30 [2022-11-22 01:08:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:25,465 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 162 transitions. [2022-11-22 01:08:25,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 162 transitions. [2022-11-22 01:08:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 01:08:25,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:25,473 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:25,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:25,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 01:08:25,680 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash -773369331, now seen corresponding path program 1 times [2022-11-22 01:08:25,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:25,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170074661] [2022-11-22 01:08:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:25,773 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:25,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:25,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170074661] [2022-11-22 01:08:25,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170074661] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:25,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866738282] [2022-11-22 01:08:25,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:25,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:25,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:25,796 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:25,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 01:08:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:25,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:08:25,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:25,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:25,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866738282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:25,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1802194809] [2022-11-22 01:08:25,988 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-22 01:08:25,989 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:25,989 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:25,989 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:25,990 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:26,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,022 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:08:26,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:08:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,059 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:26,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:26,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:26,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:26,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:26,231 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-22 01:08:26,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-11-22 01:08:26,288 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 15 treesize of output 11 [2022-11-22 01:08:26,320 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:26,448 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:27,237 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4015#(and (<= 0 |sep_#in~x.base|) (< (+ 9223372036854775807 |sep_#t~post4|) 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:27,237 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:27,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:27,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-22 01:08:27,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87012226] [2022-11-22 01:08:27,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:27,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:08:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:27,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:08:27,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:08:27,239 INFO L87 Difference]: Start difference. First operand 118 states and 162 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:27,389 INFO L93 Difference]: Finished difference Result 150 states and 205 transitions. [2022-11-22 01:08:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:08:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-22 01:08:27,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:27,392 INFO L225 Difference]: With dead ends: 150 [2022-11-22 01:08:27,392 INFO L226 Difference]: Without dead ends: 149 [2022-11-22 01:08:27,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:08:27,393 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 38 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:27,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 215 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-22 01:08:27,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 136. [2022-11-22 01:08:27,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 123 states have (on average 1.5040650406504066) internal successors, (185), 132 states have internal predecessors, (185), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:27,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 190 transitions. [2022-11-22 01:08:27,408 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 190 transitions. Word has length 30 [2022-11-22 01:08:27,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:27,408 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 190 transitions. [2022-11-22 01:08:27,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 12 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:27,409 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 190 transitions. [2022-11-22 01:08:27,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-22 01:08:27,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:27,409 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:27,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:27,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 01:08:27,617 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:27,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:27,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1882915985, now seen corresponding path program 1 times [2022-11-22 01:08:27,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:27,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402244159] [2022-11-22 01:08:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:27,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 01:08:27,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:27,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402244159] [2022-11-22 01:08:27,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402244159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:27,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:08:27,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:08:27,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202696698] [2022-11-22 01:08:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:27,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:08:27,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:08:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:08:27,664 INFO L87 Difference]: Start difference. First operand 136 states and 190 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:27,697 INFO L93 Difference]: Finished difference Result 136 states and 190 transitions. [2022-11-22 01:08:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:08:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-22 01:08:27,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:27,699 INFO L225 Difference]: With dead ends: 136 [2022-11-22 01:08:27,699 INFO L226 Difference]: Without dead ends: 135 [2022-11-22 01:08:27,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:08:27,701 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:27,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 71 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:27,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-22 01:08:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2022-11-22 01:08:27,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 123 states have (on average 1.4146341463414633) internal successors, (174), 131 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 179 transitions. [2022-11-22 01:08:27,712 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 179 transitions. Word has length 32 [2022-11-22 01:08:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:27,713 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 179 transitions. [2022-11-22 01:08:27,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:27,713 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 179 transitions. [2022-11-22 01:08:27,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 01:08:27,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:27,714 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:27,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 01:08:27,715 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1759146724, now seen corresponding path program 1 times [2022-11-22 01:08:27,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:27,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260789517] [2022-11-22 01:08:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:27,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:27,791 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:27,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260789517] [2022-11-22 01:08:27,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260789517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:27,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656966959] [2022-11-22 01:08:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:27,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:27,794 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:27,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 01:08:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:08:27,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:27,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:27,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656966959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:27,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:27,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-22 01:08:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703265713] [2022-11-22 01:08:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:27,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:08:27,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:08:27,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:08:27,951 INFO L87 Difference]: Start difference. First operand 135 states and 179 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:28,044 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2022-11-22 01:08:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:08:28,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-22 01:08:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:28,045 INFO L225 Difference]: With dead ends: 135 [2022-11-22 01:08:28,045 INFO L226 Difference]: Without dead ends: 134 [2022-11-22 01:08:28,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:08:28,046 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:28,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 89 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-22 01:08:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-11-22 01:08:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 123 states have (on average 1.3252032520325203) internal successors, (163), 130 states have internal predecessors, (163), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 168 transitions. [2022-11-22 01:08:28,065 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 168 transitions. Word has length 33 [2022-11-22 01:08:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:28,065 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 168 transitions. [2022-11-22 01:08:28,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:28,065 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 168 transitions. [2022-11-22 01:08:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 01:08:28,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:28,066 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:28,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:28,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 01:08:28,278 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash -450795490, now seen corresponding path program 2 times [2022-11-22 01:08:28,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:28,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159406884] [2022-11-22 01:08:28,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:28,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:28,375 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:28,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:28,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159406884] [2022-11-22 01:08:28,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159406884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:28,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642058059] [2022-11-22 01:08:28,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:08:28,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:28,377 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:28,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 01:08:28,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:08:28,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:08:28,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:28,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-22 01:08:28,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:28,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642058059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:28,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:28,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-22 01:08:28,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262993103] [2022-11-22 01:08:28,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:28,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:08:28,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:28,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:08:28,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-22 01:08:28,485 INFO L87 Difference]: Start difference. First operand 134 states and 168 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:28,536 INFO L93 Difference]: Finished difference Result 134 states and 168 transitions. [2022-11-22 01:08:28,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:08:28,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-22 01:08:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:28,538 INFO L225 Difference]: With dead ends: 134 [2022-11-22 01:08:28,538 INFO L226 Difference]: Without dead ends: 133 [2022-11-22 01:08:28,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:08:28,539 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:28,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 87 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:28,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-22 01:08:28,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 119. [2022-11-22 01:08:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 115 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2022-11-22 01:08:28,549 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 36 [2022-11-22 01:08:28,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:28,549 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2022-11-22 01:08:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:28,550 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2022-11-22 01:08:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 01:08:28,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:28,551 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:28,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:28,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 01:08:28,756 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash 191394340, now seen corresponding path program 1 times [2022-11-22 01:08:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:28,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482345191] [2022-11-22 01:08:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:28,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:28,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482345191] [2022-11-22 01:08:28,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482345191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:28,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827792982] [2022-11-22 01:08:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:28,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:28,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:28,915 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:28,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-22 01:08:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:29,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:08:29,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-22 01:08:29,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-22 01:08:29,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827792982] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:29,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1875645458] [2022-11-22 01:08:29,112 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:08:29,113 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:29,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:29,113 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:29,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:29,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,144 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:29,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:29,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:29,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:29,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:29,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:29,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:29,314 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-22 01:08:29,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-22 01:08:29,366 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 15 treesize of output 11 [2022-11-22 01:08:29,401 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:29,609 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:30,791 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5769#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (not (<= |sep_#t~post3| 9223372036854775806)) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:30,792 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:30,792 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:30,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2022-11-22 01:08:30,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779531707] [2022-11-22 01:08:30,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:30,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 01:08:30,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:30,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 01:08:30,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:08:30,793 INFO L87 Difference]: Start difference. First operand 119 states and 147 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:31,067 INFO L93 Difference]: Finished difference Result 173 states and 220 transitions. [2022-11-22 01:08:31,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 01:08:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-22 01:08:31,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:31,070 INFO L225 Difference]: With dead ends: 173 [2022-11-22 01:08:31,070 INFO L226 Difference]: Without dead ends: 172 [2022-11-22 01:08:31,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 01:08:31,071 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:31,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 239 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:31,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-22 01:08:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 139. [2022-11-22 01:08:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 129 states have (on average 1.302325581395349) internal successors, (168), 135 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 173 transitions. [2022-11-22 01:08:31,084 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 173 transitions. Word has length 36 [2022-11-22 01:08:31,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 173 transitions. [2022-11-22 01:08:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 12 states have internal predecessors, (42), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 173 transitions. [2022-11-22 01:08:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 01:08:31,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:31,086 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:31,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:31,292 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1638263305, now seen corresponding path program 1 times [2022-11-22 01:08:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819949517] [2022-11-22 01:08:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:31,444 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:31,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:31,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819949517] [2022-11-22 01:08:31,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819949517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:31,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862747951] [2022-11-22 01:08:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:31,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:31,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:31,446 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:31,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 01:08:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:31,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:08:31,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:31,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:31,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862747951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:31,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [669628960] [2022-11-22 01:08:31,665 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:08:31,665 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:31,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:31,666 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:31,666 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:31,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,695 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:08:31,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:08:31,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,728 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:31,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:31,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:31,920 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-22 01:08:31,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-22 01:08:31,972 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 15 treesize of output 11 [2022-11-22 01:08:32,006 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:32,207 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:33,476 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6404#(and (<= 0 |sep_#in~x.base|) (< (+ 9223372036854775807 |sep_#t~post4|) 0) (<= |#NULL.offset| 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:33,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:33,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:33,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-22 01:08:33,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673675938] [2022-11-22 01:08:33,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:33,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:08:33,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:33,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:08:33,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:08:33,479 INFO L87 Difference]: Start difference. First operand 139 states and 173 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:33,818 INFO L93 Difference]: Finished difference Result 199 states and 253 transitions. [2022-11-22 01:08:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 01:08:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-22 01:08:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:33,820 INFO L225 Difference]: With dead ends: 199 [2022-11-22 01:08:33,820 INFO L226 Difference]: Without dead ends: 198 [2022-11-22 01:08:33,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=202, Invalid=1358, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:08:33,822 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:33,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 221 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:33,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-22 01:08:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 184. [2022-11-22 01:08:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 174 states have (on average 1.2988505747126438) internal successors, (226), 180 states have internal predecessors, (226), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:33,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 231 transitions. [2022-11-22 01:08:33,850 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 231 transitions. Word has length 37 [2022-11-22 01:08:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:33,850 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 231 transitions. [2022-11-22 01:08:33,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 231 transitions. [2022-11-22 01:08:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-22 01:08:33,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:33,852 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:33,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:34,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:34,065 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:34,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1431624943, now seen corresponding path program 1 times [2022-11-22 01:08:34,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:34,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104950577] [2022-11-22 01:08:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:34,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104950577] [2022-11-22 01:08:34,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104950577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215260469] [2022-11-22 01:08:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:34,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:34,179 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:34,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-22 01:08:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:34,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:08:34,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-22 01:08:34,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:34,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215260469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:34,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:34,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:08:34,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817910377] [2022-11-22 01:08:34,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:34,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:34,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:34,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:34,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:08:34,317 INFO L87 Difference]: Start difference. First operand 184 states and 231 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:08:34,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:34,356 INFO L93 Difference]: Finished difference Result 346 states and 438 transitions. [2022-11-22 01:08:34,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:34,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-22 01:08:34,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:34,358 INFO L225 Difference]: With dead ends: 346 [2022-11-22 01:08:34,359 INFO L226 Difference]: Without dead ends: 191 [2022-11-22 01:08:34,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:08:34,361 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:34,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-22 01:08:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2022-11-22 01:08:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 176 states have (on average 1.2954545454545454) internal successors, (228), 182 states have internal predecessors, (228), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 233 transitions. [2022-11-22 01:08:34,379 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 233 transitions. Word has length 43 [2022-11-22 01:08:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:34,380 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 233 transitions. [2022-11-22 01:08:34,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:08:34,380 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 233 transitions. [2022-11-22 01:08:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-22 01:08:34,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:34,381 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:34,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:34,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-22 01:08:34,589 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:34,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:34,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1430700338, now seen corresponding path program 1 times [2022-11-22 01:08:34,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:34,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22624974] [2022-11-22 01:08:34,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:34,685 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:34,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:34,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22624974] [2022-11-22 01:08:34,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22624974] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:34,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021101540] [2022-11-22 01:08:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:34,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:34,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:34,688 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:34,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-22 01:08:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:34,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:08:34,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-22 01:08:34,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:34,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021101540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:34,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:34,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:08:34,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965781619] [2022-11-22 01:08:34,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:08:34,814 INFO L87 Difference]: Start difference. First operand 186 states and 233 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:08:34,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:34,848 INFO L93 Difference]: Finished difference Result 192 states and 239 transitions. [2022-11-22 01:08:34,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:34,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-22 01:08:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:34,850 INFO L225 Difference]: With dead ends: 192 [2022-11-22 01:08:34,850 INFO L226 Difference]: Without dead ends: 191 [2022-11-22 01:08:34,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:08:34,852 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:34,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:34,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-22 01:08:34,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 187. [2022-11-22 01:08:34,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 177 states have (on average 1.2937853107344632) internal successors, (229), 183 states have internal predecessors, (229), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:34,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 234 transitions. [2022-11-22 01:08:34,868 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 234 transitions. Word has length 44 [2022-11-22 01:08:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:34,868 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 234 transitions. [2022-11-22 01:08:34,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:08:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 234 transitions. [2022-11-22 01:08:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-22 01:08:34,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:34,870 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:34,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:35,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:35,076 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:35,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1037486752, now seen corresponding path program 2 times [2022-11-22 01:08:35,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:35,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489261313] [2022-11-22 01:08:35,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:35,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:08:35,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:35,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489261313] [2022-11-22 01:08:35,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489261313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:35,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183750328] [2022-11-22 01:08:35,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:08:35,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:35,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:35,269 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:35,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-22 01:08:35,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-22 01:08:35,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:08:35,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 01:08:35,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:35,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:35,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183750328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:35,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [420145436] [2022-11-22 01:08:35,551 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:08:35,551 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:35,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:35,552 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:35,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:35,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,588 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:35,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:35,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:35,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:35,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,754 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:35,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:35,762 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-22 01:08:35,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 237 treesize of output 206 [2022-11-22 01:08:35,819 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 15 treesize of output 11 [2022-11-22 01:08:35,856 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:36,086 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:37,248 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8491#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (not (<= |sep_#t~post3| 9223372036854775806)) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:08:37,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:08:37,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:37,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-11-22 01:08:37,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917505612] [2022-11-22 01:08:37,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:08:37,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 01:08:37,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 01:08:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 01:08:37,250 INFO L87 Difference]: Start difference. First operand 187 states and 234 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:37,650 INFO L93 Difference]: Finished difference Result 365 states and 464 transitions. [2022-11-22 01:08:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 01:08:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-22 01:08:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:37,655 INFO L225 Difference]: With dead ends: 365 [2022-11-22 01:08:37,655 INFO L226 Difference]: Without dead ends: 364 [2022-11-22 01:08:37,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=332, Invalid=2118, Unknown=0, NotChecked=0, Total=2450 [2022-11-22 01:08:37,657 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 71 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:37,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 259 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:08:37,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-22 01:08:37,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 239. [2022-11-22 01:08:37,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 229 states have (on average 1.2838427947598254) internal successors, (294), 235 states have internal predecessors, (294), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 299 transitions. [2022-11-22 01:08:37,680 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 299 transitions. Word has length 43 [2022-11-22 01:08:37,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:37,680 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 299 transitions. [2022-11-22 01:08:37,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 18 states have internal predecessors, (58), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:08:37,680 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 299 transitions. [2022-11-22 01:08:37,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 01:08:37,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:37,681 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:37,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:37,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-22 01:08:37,887 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:37,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:37,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1402039540, now seen corresponding path program 1 times [2022-11-22 01:08:37,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:37,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460739127] [2022-11-22 01:08:37,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:37,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:37,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:37,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460739127] [2022-11-22 01:08:37,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460739127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:37,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88725849] [2022-11-22 01:08:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:37,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:37,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:37,962 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:37,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-22 01:08:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:38,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:38,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:38,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-22 01:08:38,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88725849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:38,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1735782771] [2022-11-22 01:08:38,145 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 01:08:38,145 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:38,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:38,146 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:38,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:38,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,176 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:38,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:38,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:08:38,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:38,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-22 01:08:38,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,362 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-22 01:08:38,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 247 treesize of output 211 [2022-11-22 01:08:38,403 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 15 treesize of output 11 [2022-11-22 01:08:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 01:08:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:38,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:38,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 01:08:38,749 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:38,924 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:42,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1735782771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:42,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:42,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [5, 5, 5] total 28 [2022-11-22 01:08:42,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390635462] [2022-11-22 01:08:42,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:42,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-22 01:08:42,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-22 01:08:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=653, Unknown=1, NotChecked=0, Total=756 [2022-11-22 01:08:42,507 INFO L87 Difference]: Start difference. First operand 239 states and 299 transitions. Second operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:45,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:08:47,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:08:47,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:47,746 INFO L93 Difference]: Finished difference Result 272 states and 339 transitions. [2022-11-22 01:08:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 01:08:47,747 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-22 01:08:47,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:47,748 INFO L225 Difference]: With dead ends: 272 [2022-11-22 01:08:47,748 INFO L226 Difference]: Without dead ends: 270 [2022-11-22 01:08:47,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=166, Invalid=1093, Unknown=1, NotChecked=0, Total=1260 [2022-11-22 01:08:47,750 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 94 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 15 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:47,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 73 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 303 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 01:08:47,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-22 01:08:47,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 241. [2022-11-22 01:08:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 231 states have (on average 1.2813852813852813) internal successors, (296), 237 states have internal predecessors, (296), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:47,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 301 transitions. [2022-11-22 01:08:47,771 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 301 transitions. Word has length 45 [2022-11-22 01:08:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:47,772 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 301 transitions. [2022-11-22 01:08:47,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:47,772 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 301 transitions. [2022-11-22 01:08:47,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 01:08:47,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:47,773 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:47,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:47,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-22 01:08:47,979 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:47,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:47,980 INFO L85 PathProgramCache]: Analyzing trace with hash -396947275, now seen corresponding path program 1 times [2022-11-22 01:08:47,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:47,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262783214] [2022-11-22 01:08:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:47,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-22 01:08:48,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:48,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262783214] [2022-11-22 01:08:48,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262783214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:48,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443329216] [2022-11-22 01:08:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:48,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:48,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:48,091 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:48,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-22 01:08:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:48,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:08:48,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-22 01:08:48,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:08:48,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443329216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:48,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:08:48,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:08:48,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555978313] [2022-11-22 01:08:48,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:48,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:08:48,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:48,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:08:48,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:08:48,226 INFO L87 Difference]: Start difference. First operand 241 states and 301 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:08:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:08:48,263 INFO L93 Difference]: Finished difference Result 241 states and 301 transitions. [2022-11-22 01:08:48,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:08:48,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-11-22 01:08:48,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:08:48,265 INFO L225 Difference]: With dead ends: 241 [2022-11-22 01:08:48,265 INFO L226 Difference]: Without dead ends: 240 [2022-11-22 01:08:48,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:08:48,266 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:08:48,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:08:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-22 01:08:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2022-11-22 01:08:48,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 1.277056277056277) internal successors, (295), 236 states have internal predecessors, (295), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:08:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 300 transitions. [2022-11-22 01:08:48,295 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 300 transitions. Word has length 48 [2022-11-22 01:08:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:08:48,295 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 300 transitions. [2022-11-22 01:08:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:08:48,297 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 300 transitions. [2022-11-22 01:08:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 01:08:48,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:08:48,298 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:08:48,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-22 01:08:48,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:48,504 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:08:48,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:08:48,505 INFO L85 PathProgramCache]: Analyzing trace with hash 579536428, now seen corresponding path program 1 times [2022-11-22 01:08:48,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:08:48,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078387749] [2022-11-22 01:08:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:48,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:08:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:48,600 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:08:48,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:08:48,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078387749] [2022-11-22 01:08:48,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078387749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:08:48,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189792854] [2022-11-22 01:08:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:08:48,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:08:48,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:08:48,603 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:08:48,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-22 01:08:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:08:48,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 01:08:48,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:08:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:08:48,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:08:48,818 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:08:48,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189792854] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:08:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [375273593] [2022-11-22 01:08:48,823 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-22 01:08:48,823 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:08:48,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:08:48,825 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:08:48,825 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:08:48,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:48,860 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:08:48,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:08:48,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:48,894 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:08:48,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:08:48,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:48,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:08:48,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:48,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:48,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:08:49,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,057 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:49,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,065 INFO L321 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2022-11-22 01:08:49,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 227 treesize of output 206 [2022-11-22 01:08:49,116 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 15 treesize of output 11 [2022-11-22 01:08:49,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-11-22 01:08:49,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:49,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-11-22 01:08:49,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:08:49,406 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 38 treesize of output 34 [2022-11-22 01:08:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:08:49,515 INFO L321 Elim1Store]: treesize reduction 47, result has 35.6 percent of original size [2022-11-22 01:08:49,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 89 [2022-11-22 01:08:49,572 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 24 treesize of output 24 [2022-11-22 01:08:49,660 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:08:49,800 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:08:57,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [375273593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:08:57,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:08:57,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 30 [2022-11-22 01:08:57,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046041558] [2022-11-22 01:08:57,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:08:57,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 01:08:57,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:08:57,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 01:08:57,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2022-11-22 01:08:57,780 INFO L87 Difference]: Start difference. First operand 240 states and 300 transitions. Second operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:09:00,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:09:02,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:09:04,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:09:07,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:09:09,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:09:09,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:09,413 INFO L93 Difference]: Finished difference Result 271 states and 340 transitions. [2022-11-22 01:09:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:09:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-11-22 01:09:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:09,415 INFO L225 Difference]: With dead ends: 271 [2022-11-22 01:09:09,416 INFO L226 Difference]: Without dead ends: 268 [2022-11-22 01:09:09,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 01:09:09,417 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 28 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:09,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 41 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 357 Invalid, 5 Unknown, 0 Unchecked, 10.6s Time] [2022-11-22 01:09:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-22 01:09:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 233. [2022-11-22 01:09:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 227 states have (on average 1.2687224669603525) internal successors, (288), 229 states have internal predecessors, (288), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:09:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2022-11-22 01:09:09,439 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 49 [2022-11-22 01:09:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:09,440 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2022-11-22 01:09:09,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:09:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2022-11-22 01:09:09,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 01:09:09,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:09,441 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:09:09,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-22 01:09:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-22 01:09:09,648 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:09:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:09,648 INFO L85 PathProgramCache]: Analyzing trace with hash 538543253, now seen corresponding path program 2 times [2022-11-22 01:09:09,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:09,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884638160] [2022-11-22 01:09:09,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:09,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:09:09,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884638160] [2022-11-22 01:09:09,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884638160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:09:09,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080209746] [2022-11-22 01:09:09,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:09:09,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:09:09,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:09:09,867 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:09:09,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-22 01:09:10,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:09:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:09:10,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:09:10,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:09:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-22 01:09:10,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:09:10,260 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-22 01:09:10,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080209746] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:09:10,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [352421002] [2022-11-22 01:09:10,262 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:09:10,262 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:09:10,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:09:10,262 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:09:10,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:09:10,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,289 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:09:10,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:09:10,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,321 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:09:10,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:09:10,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:09:10,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:09:10,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:09:10,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:10,524 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-11-22 01:09:10,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 216 [2022-11-22 01:09:10,618 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 15 treesize of output 11 [2022-11-22 01:09:10,652 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:09:10,851 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:09:12,168 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12080#(and (<= 0 |sep_#in~x.base|) (< (+ 9223372036854775807 |sep_#t~post4|) 0) (<= |#NULL.offset| 0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |sep_#t~post4| sep_~ret~0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:09:12,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:09:12,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:09:12,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-22 01:09:12,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954854026] [2022-11-22 01:09:12,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:09:12,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 01:09:12,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:12,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 01:09:12,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=920, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 01:09:12,170 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:12,569 INFO L93 Difference]: Finished difference Result 495 states and 630 transitions. [2022-11-22 01:09:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 01:09:12,570 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-11-22 01:09:12,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:12,572 INFO L225 Difference]: With dead ends: 495 [2022-11-22 01:09:12,573 INFO L226 Difference]: Without dead ends: 494 [2022-11-22 01:09:12,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=302, Invalid=1860, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 01:09:12,574 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 73 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:12,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 202 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:12,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-11-22 01:09:12,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 274. [2022-11-22 01:09:12,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 268 states have (on average 1.2686567164179106) internal successors, (340), 270 states have internal predecessors, (340), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:09:12,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 345 transitions. [2022-11-22 01:09:12,603 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 345 transitions. Word has length 51 [2022-11-22 01:09:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:12,604 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 345 transitions. [2022-11-22 01:09:12,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 18 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 345 transitions. [2022-11-22 01:09:12,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 01:09:12,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:12,605 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1] [2022-11-22 01:09:12,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-22 01:09:12,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-22 01:09:12,812 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:09:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1890249254, now seen corresponding path program 3 times [2022-11-22 01:09:12,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:12,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973732168] [2022-11-22 01:09:12,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:12,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:09:13,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973732168] [2022-11-22 01:09:13,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973732168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:09:13,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587670176] [2022-11-22 01:09:13,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:09:13,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:09:13,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:09:13,068 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:09:13,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-22 01:09:13,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:09:13,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:09:13,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:09:13,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:09:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:09:13,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:09:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:09:13,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587670176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:09:13,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [459442762] [2022-11-22 01:09:13,541 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-22 01:09:13,541 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:09:13,542 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:09:13,542 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:09:13,542 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:09:13,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,573 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:09:13,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:09:13,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-22 01:09:13,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:09:13,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:09:13,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,738 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:09:13,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:13,757 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-11-22 01:09:13,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 221 treesize of output 209 [2022-11-22 01:09:13,840 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 15 treesize of output 11 [2022-11-22 01:09:13,863 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:09:14,030 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:09:15,117 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13369#(and (<= 0 |sep_#in~x.base|) (not (<= |sep_#t~post3| 9223372036854775806)) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (= |#NULL.offset| 0) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:09:15,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:09:15,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:09:15,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2022-11-22 01:09:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195227884] [2022-11-22 01:09:15,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:09:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-22 01:09:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-22 01:09:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 01:09:15,120 INFO L87 Difference]: Start difference. First operand 274 states and 345 transitions. Second operand has 28 states, 27 states have (on average 3.259259259259259) internal successors, (88), 28 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:15,586 INFO L93 Difference]: Finished difference Result 390 states and 501 transitions. [2022-11-22 01:09:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-22 01:09:15,586 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.259259259259259) internal successors, (88), 28 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-22 01:09:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:15,589 INFO L225 Difference]: With dead ends: 390 [2022-11-22 01:09:15,589 INFO L226 Difference]: Without dead ends: 389 [2022-11-22 01:09:15,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 937 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=509, Invalid=2247, Unknown=0, NotChecked=0, Total=2756 [2022-11-22 01:09:15,591 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 154 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:15,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 229 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:09:15,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-22 01:09:15,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 345. [2022-11-22 01:09:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 339 states have (on average 1.2743362831858407) internal successors, (432), 341 states have internal predecessors, (432), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:09:15,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 437 transitions. [2022-11-22 01:09:15,644 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 437 transitions. Word has length 57 [2022-11-22 01:09:15,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:15,644 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 437 transitions. [2022-11-22 01:09:15,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.259259259259259) internal successors, (88), 28 states have internal predecessors, (88), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:15,644 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 437 transitions. [2022-11-22 01:09:15,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 01:09:15,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:15,650 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:09:15,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-22 01:09:15,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-22 01:09:15,856 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:09:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash 807838420, now seen corresponding path program 3 times [2022-11-22 01:09:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672723708] [2022-11-22 01:09:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:15,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:16,088 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 66 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-22 01:09:16,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:16,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672723708] [2022-11-22 01:09:16,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672723708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:09:16,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130278135] [2022-11-22 01:09:16,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:09:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:09:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:09:16,091 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:09:16,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-22 01:09:16,213 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:09:16,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:09:16,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:09:16,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:09:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 62 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-22 01:09:16,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:09:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 5 proven. 62 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-11-22 01:09:16,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130278135] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:09:16,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [398068116] [2022-11-22 01:09:16,503 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:09:16,503 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:09:16,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:09:16,504 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:09:16,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:09:16,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,535 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 01:09:16,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-22 01:09:16,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,566 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 01:09:16,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-22 01:09:16,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-22 01:09:16,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 47 [2022-11-22 01:09:16,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,735 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 01:09:16,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:09:16,765 INFO L321 Elim1Store]: treesize reduction 66, result has 13.2 percent of original size [2022-11-22 01:09:16,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 231 treesize of output 216 [2022-11-22 01:09:16,850 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 15 treesize of output 11 [2022-11-22 01:09:16,887 INFO L197 IcfgInterpreter]: Interpreting procedure sep with input of size 12 for LOIs [2022-11-22 01:09:17,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:09:18,448 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14610#(and (<= 0 |sep_#in~x.base|) (<= |#NULL.offset| 0) (not (<= |sep_#t~post3| 9223372036854775806)) (= |sep_#t~post3| sep_~ret~0) (<= 0 sep_~x.base) (<= 0 sep_~i~0) (<= 0 sep_~x.offset) (= |sep_#in~x.offset| 0) (<= 0 |#NULL.offset|) (<= sep_~x.offset 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:09:18,448 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:09:18,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:09:18,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 21 [2022-11-22 01:09:18,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288641711] [2022-11-22 01:09:18,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:09:18,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 01:09:18,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:18,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 01:09:18,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1157, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:09:18,450 INFO L87 Difference]: Start difference. First operand 345 states and 437 transitions. Second operand has 22 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:19,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:19,097 INFO L93 Difference]: Finished difference Result 739 states and 945 transitions. [2022-11-22 01:09:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-22 01:09:19,098 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-22 01:09:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:19,101 INFO L225 Difference]: With dead ends: 739 [2022-11-22 01:09:19,101 INFO L226 Difference]: Without dead ends: 738 [2022-11-22 01:09:19,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=495, Invalid=2927, Unknown=0, NotChecked=0, Total=3422 [2022-11-22 01:09:19,104 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 98 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:19,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 232 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:09:19,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-11-22 01:09:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 380. [2022-11-22 01:09:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 374 states have (on average 1.2754010695187166) internal successors, (477), 376 states have internal predecessors, (477), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:09:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 482 transitions. [2022-11-22 01:09:19,151 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 482 transitions. Word has length 57 [2022-11-22 01:09:19,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:19,152 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 482 transitions. [2022-11-22 01:09:19,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 22 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:19,152 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 482 transitions. [2022-11-22 01:09:19,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-22 01:09:19,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:09:19,154 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 01:09:19,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-22 01:09:19,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-22 01:09:19,373 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-22 01:09:19,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:09:19,374 INFO L85 PathProgramCache]: Analyzing trace with hash -376796401, now seen corresponding path program 3 times [2022-11-22 01:09:19,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:09:19,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503260742] [2022-11-22 01:09:19,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:09:19,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:09:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:09:19,650 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 10 proven. 75 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-22 01:09:19,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:09:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503260742] [2022-11-22 01:09:19,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503260742] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:09:19,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203608114] [2022-11-22 01:09:19,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:09:19,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:09:19,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:09:19,656 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:09:19,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-22 01:09:19,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:09:19,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:09:19,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:09:19,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:09:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 01:09:19,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:09:19,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203608114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:09:19,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:09:19,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 22 [2022-11-22 01:09:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638279466] [2022-11-22 01:09:19,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:09:19,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 01:09:19,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:09:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 01:09:19,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-11-22 01:09:19,996 INFO L87 Difference]: Start difference. First operand 380 states and 482 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:09:20,180 INFO L93 Difference]: Finished difference Result 703 states and 883 transitions. [2022-11-22 01:09:20,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:09:20,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-22 01:09:20,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:09:20,188 INFO L225 Difference]: With dead ends: 703 [2022-11-22 01:09:20,188 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:09:20,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:09:20,194 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 26 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:09:20,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 194 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:09:20,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:09:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:09:20,196 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 01:09:20,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:09:20,196 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-11-22 01:09:20,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:09:20,197 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:09:20,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 01:09:20,197 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:09:20,197 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:09:20,202 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-22 01:09:20,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-22 01:09:20,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-22 01:09:20,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-22 01:09:20,203 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-22 01:09:20,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-22 01:09:20,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-22 01:09:20,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-22 01:09:20,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-22 01:09:20,204 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-22 01:09:20,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-22 01:09:20,205 INFO L805 garLoopResultBuilder]: Registering result SAFE for location sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-22 01:09:20,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-11-22 01:09:20,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:09:20,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:09:30,812 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-22 01:09:30,813 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 5 |ULTIMATE.start_main_~i~1#1|) (exists ((v_sep_~ret~0_BEFORE_RETURN_1 Int)) (and (<= v_sep_~ret~0_BEFORE_RETURN_1 9223372036854775807) (= (let ((.cse0 (mod v_sep_~ret~0_BEFORE_RETURN_1 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) |ULTIMATE.start_main_~ret~1#1|) (<= 1 v_sep_~ret~0_BEFORE_RETURN_1))) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 4 |ULTIMATE.start_main_~#x~0#1.offset|)) |ULTIMATE.start_main_~temp~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-22 01:09:30,813 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-11-22 01:09:30,813 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-22 01:09:30,813 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:09:30,814 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-22 01:09:30,814 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2022-11-22 01:09:30,814 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-11-22 01:09:30,814 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-11-22 01:09:30,814 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-22 01:09:30,814 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:09:30,815 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse3 (<= 1 |ULTIMATE.start_main_~i~1#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse2 (<= |#NULL.offset| 0)) (.cse4 (<= |#NULL.base| 0)) (.cse5 (<= 0 |#NULL.offset|)) (.cse6 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~i~1#1| 2147483647) .cse3 .cse4 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) .cse5 .cse6 (<= 0 |#StackHeapBarrier|)) (and .cse0 (<= 0 |ULTIMATE.start_main_~i~1#1|) .cse1 .cse2 (<= |ULTIMATE.start_main_~i~1#1| 0) .cse4 .cse5 .cse6))) (or (let ((.cse7 (select |#memory_int| 1))) (and (= 2 (select |#length| 1)) (= (select |#valid| |ULTIMATE.start_main_~#x~0#1.base|) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= (select .cse7 0) 48) (= 10 (select |#length| 2)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#x~0#1.base|) (= (select .cse7 1) 0) (< 0 |#StackHeapBarrier|) (= (select |#length| |ULTIMATE.start_main_~#x~0#1.base|) 20))) .cse3))) [2022-11-22 01:09:30,815 INFO L895 garLoopResultBuilder]: At program point L37-6(lines 37 39) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 5 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)) [2022-11-22 01:09:30,815 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 46) no Hoare annotation was computed. [2022-11-22 01:09:30,815 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648))) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~ret~1#1| 2147483647)) (.cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse8 (<= 5 |ULTIMATE.start_main_~i~1#1|)) (.cse9 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse10 (<= 0 |#NULL.offset|)) (.cse11 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse9 .cse10 .cse11))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:09:30,816 INFO L902 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: true [2022-11-22 01:09:30,816 INFO L899 garLoopResultBuilder]: For program point L46-3(line 46) no Hoare annotation was computed. [2022-11-22 01:09:30,816 INFO L899 garLoopResultBuilder]: For program point L46-4(line 46) no Hoare annotation was computed. [2022-11-22 01:09:30,816 INFO L895 garLoopResultBuilder]: At program point L46-5(lines 46 48) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start_main_~i~2#1|))) (and (or .cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) |ULTIMATE.start_main_~#x~0#1.offset|) |ULTIMATE.start_main_~temp~0#1|)) (let ((.cse1 (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647)) (.cse2 (<= 0 |ULTIMATE.start_main_~#x~0#1.offset|)) (.cse3 (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648))) (.cse4 (<= |#NULL.offset| 0)) (.cse5 (<= |ULTIMATE.start_main_~ret~1#1| 2147483647)) (.cse6 (<= |ULTIMATE.start_main_~i~1#1| 2147483647)) (.cse7 (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648))) (.cse8 (<= 5 |ULTIMATE.start_main_~i~1#1|)) (.cse9 (<= 0 |ULTIMATE.start_main_~#x~0#1.base|)) (.cse10 (<= 0 |#NULL.offset|)) (.cse11 (<= |ULTIMATE.start_main_~#x~0#1.offset| 0))) (or (and .cse1 (<= |ULTIMATE.start_main_~i~2#1| 0) .cse2 (<= 0 |ULTIMATE.start_main_~i~2#1|) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse0 (<= |ULTIMATE.start_main_~i~2#1| 2147483647) .cse9 .cse10 .cse11))) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2022-11-22 01:09:30,816 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 47) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L899 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L899 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L899 garLoopResultBuilder]: For program point L21-1(line 21) no Hoare annotation was computed. [2022-11-22 01:09:30,817 INFO L902 garLoopResultBuilder]: At program point sepENTRY(lines 15 26) the Hoare annotation is: true [2022-11-22 01:09:30,818 INFO L899 garLoopResultBuilder]: For program point sepEXIT(lines 15 26) no Hoare annotation was computed. [2022-11-22 01:09:30,818 INFO L899 garLoopResultBuilder]: For program point sepErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-22 01:09:30,818 INFO L899 garLoopResultBuilder]: For program point sepErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-11-22 01:09:30,818 INFO L899 garLoopResultBuilder]: For program point sepErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-22 01:09:30,818 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 23) no Hoare annotation was computed. [2022-11-22 01:09:30,818 INFO L899 garLoopResultBuilder]: For program point L18-2(lines 18 24) no Hoare annotation was computed. [2022-11-22 01:09:30,819 INFO L899 garLoopResultBuilder]: For program point L18-3(line 18) no Hoare annotation was computed. [2022-11-22 01:09:30,819 INFO L899 garLoopResultBuilder]: For program point L18-4(line 18) no Hoare annotation was computed. [2022-11-22 01:09:30,819 INFO L895 garLoopResultBuilder]: At program point L18-5(lines 18 24) the Hoare annotation is: (let ((.cse9 (+ 9223372036854775808 sep_~ret~0))) (let ((.cse10 (<= 5 sep_~i~0)) (.cse2 (<= sep_~ret~0 0)) (.cse13 (<= 0 (+ sep_~ret~0 1))) (.cse8 (<= 3 sep_~i~0)) (.cse1 (<= 2 sep_~i~0)) (.cse3 (<= sep_~ret~0 9223372036854775807)) (.cse4 (<= 0 sep_~ret~0)) (.cse11 (<= 4 sep_~i~0)) (.cse5 (<= 1 sep_~i~0)) (.cse12 (< sep_~ret~0 9223372036854775807)) (.cse6 (= |sep_#in~x.offset| 0)) (.cse0 (= |#NULL.offset| 0)) (.cse7 (<= 0 .cse9))) (or (not .cse0) (and .cse1 .cse2 (<= 0 (+ 2 sep_~ret~0))) (and .cse3 .cse4 (<= sep_~ret~0 1) .cse5 .cse6 .cse0 .cse7) (and .cse4 .cse2 (= sep_~i~0 0) (<= 0 sep_~x.offset) (= sep_~x.base |sep_#in~x.base|) (<= sep_~x.offset 0)) (and .cse2 (< 0 (+ 9223372036854775806 sep_~ret~0)) .cse8) (not .cse6) (and (< 0 .cse9) .cse2 .cse10) (and .cse2 .cse11 (< 0 (+ 9223372036854775807 sep_~ret~0))) (and .cse3 .cse4 (< sep_~ret~0 9223372036854775806) .cse5 .cse12 .cse6 .cse10 .cse0 .cse7) (and .cse3 .cse2 .cse13 .cse5 .cse6 .cse0 .cse7) (not (= |#NULL.base| 0)) (and .cse13 (< sep_~ret~0 9223372036854775804) .cse8) (not (<= 0 |#StackHeapBarrier|)) (and .cse4 .cse1 (<= sep_~ret~0 2)) (not (<= 0 |sep_#in~x.base|)) (and .cse3 .cse4 .cse11 (< sep_~ret~0 9223372036854775805) .cse5 .cse12 .cse6 .cse0 .cse7)))) [2022-11-22 01:09:30,819 INFO L899 garLoopResultBuilder]: For program point sepErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2022-11-22 01:09:30,820 INFO L899 garLoopResultBuilder]: For program point sepErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-22 01:09:30,820 INFO L899 garLoopResultBuilder]: For program point sepErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-22 01:09:30,823 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:09:30,826 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:09:30,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:09:30 BoogieIcfgContainer [2022-11-22 01:09:30,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:09:30,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:09:30,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:09:30,850 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:09:30,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:06" (3/4) ... [2022-11-22 01:09:30,854 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:09:30,860 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure sep [2022-11-22 01:09:30,865 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-22 01:09:30,865 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-22 01:09:30,865 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 01:09:30,866 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:09:30,907 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:09:30,907 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:09:30,908 INFO L158 Benchmark]: Toolchain (without parser) took 85696.62ms. Allocated memory was 140.5MB in the beginning and 358.6MB in the end (delta: 218.1MB). Free memory was 102.0MB in the beginning and 152.1MB in the end (delta: -50.1MB). Peak memory consumption was 167.0MB. Max. memory is 16.1GB. [2022-11-22 01:09:30,908 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:09:30,908 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.39ms. Allocated memory is still 140.5MB. Free memory was 101.5MB in the beginning and 108.4MB in the end (delta: -6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 01:09:30,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.31ms. Allocated memory is still 140.5MB. Free memory was 107.8MB in the beginning and 106.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:09:30,909 INFO L158 Benchmark]: Boogie Preprocessor took 56.29ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 105.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:09:30,909 INFO L158 Benchmark]: RCFGBuilder took 493.01ms. Allocated memory is still 140.5MB. Free memory was 105.2MB in the beginning and 90.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 01:09:30,909 INFO L158 Benchmark]: TraceAbstraction took 84625.55ms. Allocated memory was 140.5MB in the beginning and 358.6MB in the end (delta: 218.1MB). Free memory was 89.5MB in the beginning and 155.2MB in the end (delta: -65.7MB). Peak memory consumption was 196.0MB. Max. memory is 16.1GB. [2022-11-22 01:09:30,910 INFO L158 Benchmark]: Witness Printer took 57.25ms. Allocated memory is still 358.6MB. Free memory was 155.2MB in the beginning and 152.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:09:30,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.39ms. Allocated memory is still 140.5MB. Free memory was 101.5MB in the beginning and 108.4MB in the end (delta: -6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.31ms. Allocated memory is still 140.5MB. Free memory was 107.8MB in the beginning and 106.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.29ms. Allocated memory is still 140.5MB. Free memory was 106.3MB in the beginning and 105.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 493.01ms. Allocated memory is still 140.5MB. Free memory was 105.2MB in the beginning and 90.1MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 84625.55ms. Allocated memory was 140.5MB in the beginning and 358.6MB in the end (delta: 218.1MB). Free memory was 89.5MB in the beginning and 155.2MB in the end (delta: -65.7MB). Peak memory consumption was 196.0MB. Max. memory is 16.1GB. * Witness Printer took 57.25ms. Allocated memory is still 358.6MB. Free memory was 155.2MB in the beginning and 152.1MB 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: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 46]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: 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 2 procedures, 39 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 84.5s, OverallIterations: 30, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 1172 SdHoareTripleChecker+Valid, 17.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1152 mSDsluCounter, 4052 SdHoareTripleChecker+Invalid, 17.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3237 mSDsCounter, 220 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3094 IncrementalHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 220 mSolverCounterUnsat, 815 mSDtfsCounter, 3094 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2224 GetRequests, 1573 SyntacticMatches, 15 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6593 ImplicationChecksByTransitivity, 31.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=380occurred in iteration=29, InterpolantAutomatonStates: 365, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 30 MinimizatonAttempts, 990 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 40 PreInvPairs, 195 NumberOfFragments, 631 HoareAnnotationTreeSize, 40 FomulaSimplifications, 38437 FormulaSimplificationTreeSizeReduction, 5.9s HoareSimplificationTime, 8 FomulaSimplificationsInter, 26872 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 1859 NumberOfCodeBlocks, 1825 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 2300 ConstructedInterpolants, 0 QuantifiedInterpolants, 4634 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3856 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 73 InterpolantComputations, 14 PerfectInterpolantSequences, 2131/3043 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: OVERALL_TIME: 3.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 99, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 257, TOOLS_POST_TIME: 2.9s, TOOLS_POST_CALL_APPLICATIONS: 16, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 281, TOOLS_QUANTIFIERELIM_TIME: 3.1s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 457, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 31, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 22, DOMAIN_WIDEN_TIME: 0.2s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 33, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 99, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 11, LOOP_SUMMARIZER_CACHE_MISSES: 11, LOOP_SUMMARIZER_OVERALL_TIME: 2.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 2.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 33, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1183, DAG_COMPRESSION_RETAINED_NODES: 300, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((((0 <= #NULL && 0 <= x) && #NULL <= 0) && i <= 2147483647) && 1 <= i) && #NULL <= 0) && 0 <= x) && 0 <= #NULL) && x <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((0 <= #NULL && 0 <= i) && 0 <= x) && #NULL <= 0) && i <= 0) && #NULL <= 0) && 0 <= #NULL) && x <= 0)) && (((((((((((2 == unknown-#length-unknown[1] && \valid[x] == 1) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && 10 == unknown-#length-unknown[2]) && unknown-#StackHeapBarrier-unknown < x) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#length-unknown[x] == 20) || 1 <= i) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((1 <= i || unknown-#memory_int-unknown[x][x] == temp) && (((((((((((((ret2 <= 2147483647 && i <= 0) && 0 <= x) && 0 <= i) && 0 <= ret + 2147483648) && #NULL <= 0) && ret <= 2147483647) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 5 <= i) && 0 <= x) && 0 <= #NULL) && x <= 0) || ((((((((((((ret2 <= 2147483647 && 0 <= x) && 0 <= ret + 2147483648) && #NULL <= 0) && ret <= 2147483647) && i <= 2147483647) && 0 <= ret2 + 2147483648) && 5 <= i) && 1 <= i) && i <= 2147483647) && 0 <= x) && 0 <= #NULL) && x <= 0))) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: ((((((((((((((!(#NULL == 0) || ((2 <= i && ret <= 0) && 0 <= 2 + ret)) || ((((((ret <= 9223372036854775807 && 0 <= ret) && ret <= 1) && 1 <= i) && x == 0) && #NULL == 0) && 0 <= 9223372036854775808 + ret)) || (((((0 <= ret && ret <= 0) && i == 0) && 0 <= x) && x == x) && x <= 0)) || ((ret <= 0 && 0 < 9223372036854775806 + ret) && 3 <= i)) || !(x == 0)) || ((0 < 9223372036854775808 + ret && ret <= 0) && 5 <= i)) || ((ret <= 0 && 4 <= i) && 0 < 9223372036854775807 + ret)) || ((((((((ret <= 9223372036854775807 && 0 <= ret) && ret < 9223372036854775806) && 1 <= i) && ret < 9223372036854775807) && x == 0) && 5 <= i) && #NULL == 0) && 0 <= 9223372036854775808 + ret)) || ((((((ret <= 9223372036854775807 && ret <= 0) && 0 <= ret + 1) && 1 <= i) && x == 0) && #NULL == 0) && 0 <= 9223372036854775808 + ret)) || !(#NULL == 0)) || ((0 <= ret + 1 && ret < 9223372036854775804) && 3 <= i)) || !(0 <= unknown-#StackHeapBarrier-unknown)) || ((0 <= ret && 2 <= i) && ret <= 2)) || !(0 <= x)) || ((((((((ret <= 9223372036854775807 && 0 <= ret) && 4 <= i) && ret < 9223372036854775805) && 1 <= i) && ret < 9223372036854775807) && x == 0) && #NULL == 0) && 0 <= 9223372036854775808 + ret) - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-22 01:09:30,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b1fb014-5ff2-404b-92db-7360d85b341a/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