./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/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_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/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_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/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 ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:26:41,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:26:41,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:26:41,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:26:41,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:26:41,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:26:41,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:26:41,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:26:41,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:26:41,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:26:41,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:26:41,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:26:41,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:26:41,147 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:26:41,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:26:41,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:26:41,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:26:41,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:26:41,161 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:26:41,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:26:41,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:26:41,174 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:26:41,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:26:41,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:26:41,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:26:41,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:26:41,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:26:41,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:26:41,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:26:41,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:26:41,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:26:41,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:26:41,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:26:41,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:26:41,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:26:41,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:26:41,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:26:41,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:26:41,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:26:41,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:26:41,207 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:26:41,208 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 02:26:41,260 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:26:41,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:26:41,261 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:26:41,262 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:26:41,263 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:26:41,263 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:26:41,263 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:26:41,263 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:26:41,264 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:26:41,264 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:26:41,265 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:26:41,265 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:26:41,266 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:26:41,266 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:26:41,266 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:26:41,266 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:26:41,267 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:26:41,267 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:26:41,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:26:41,268 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:26:41,268 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:26:41,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:26:41,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:26:41,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:26:41,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:26:41,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:26:41,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:26:41,270 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:26:41,270 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:26:41,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:26:41,270 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:26:41,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:26:41,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:26:41,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:26:41,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:26:41,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:26:41,273 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:26:41,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:26:41,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:26:41,274 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:26:41,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:26:41,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:26:41,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:26:41,275 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_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec4d4b5cea975144b4de3d9f9eb9b04d1c4b7aa6b7464f360f53530c4a9bd50e [2022-11-22 02:26:41,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:26:41,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:26:41,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:26:41,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:26:41,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:26:41,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-11-22 02:26:44,834 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:26:45,125 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:26:45,126 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/sv-benchmarks/c/array-examples/standard_compareModified_ground.i [2022-11-22 02:26:45,134 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/data/ff86c06af/2f900abcda7d4c2eaf050345d86fdf2f/FLAGeb6c4cc72 [2022-11-22 02:26:45,149 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/data/ff86c06af/2f900abcda7d4c2eaf050345d86fdf2f [2022-11-22 02:26:45,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:26:45,154 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:26:45,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:26:45,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:26:45,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:26:45,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0cb68c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45, skipping insertion in model container [2022-11-22 02:26:45,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,171 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:26:45,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:26:45,345 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_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/sv-benchmarks/c/array-examples/standard_compareModified_ground.i[824,837] [2022-11-22 02:26:45,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:26:45,375 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:26:45,401 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_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/sv-benchmarks/c/array-examples/standard_compareModified_ground.i[824,837] [2022-11-22 02:26:45,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:26:45,448 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:26:45,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45 WrapperNode [2022-11-22 02:26:45,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:26:45,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:26:45,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:26:45,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:26:45,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,513 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 94 [2022-11-22 02:26:45,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:26:45,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:26:45,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:26:45,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:26:45,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:26:45,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:26:45,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:26:45,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:26:45,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (1/1) ... [2022-11-22 02:26:45,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:26:45,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:45,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:26:45,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:26:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:26:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:26:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:26:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:26:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:26:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:26:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:26:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 02:26:45,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 02:26:45,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:26:45,778 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:26:45,781 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:26:46,116 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:26:46,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:26:46,223 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 02:26:46,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:26:46 BoogieIcfgContainer [2022-11-22 02:26:46,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:26:46,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:26:46,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:26:46,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:26:46,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:26:45" (1/3) ... [2022-11-22 02:26:46,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc3e7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:26:46, skipping insertion in model container [2022-11-22 02:26:46,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:26:45" (2/3) ... [2022-11-22 02:26:46,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc3e7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:26:46, skipping insertion in model container [2022-11-22 02:26:46,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:26:46" (3/3) ... [2022-11-22 02:26:46,242 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_compareModified_ground.i [2022-11-22 02:26:46,267 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:26:46,267 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-22 02:26:46,326 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:26:46,336 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;@4dc1e391, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:26:46,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-22 02:26:46,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 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 02:26:46,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:26:46,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:46,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:26:46,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash 138831, now seen corresponding path program 1 times [2022-11-22 02:26:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:46,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275570935] [2022-11-22 02:26:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:46,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:26:46,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275570935] [2022-11-22 02:26:46,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275570935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:46,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:26:46,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:26:46,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812643436] [2022-11-22 02:26:46,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:46,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:26:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:26:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:26:46,845 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 26 states have internal predecessors, (31), 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) 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 02:26:46,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:46,950 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2022-11-22 02:26:46,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:26:46,953 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 02:26:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:46,961 INFO L225 Difference]: With dead ends: 59 [2022-11-22 02:26:46,961 INFO L226 Difference]: Without dead ends: 32 [2022-11-22 02:26:46,964 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 02:26:46,968 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:46,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 68 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:26:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-22 02:26:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-22 02:26:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 28 states have internal predecessors, (33), 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 02:26:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-22 02:26:47,007 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 3 [2022-11-22 02:26:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:47,007 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-22 02:26:47,008 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 02:26:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-22 02:26:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:26:47,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:47,008 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-22 02:26:47,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:26:47,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash -159004478, now seen corresponding path program 1 times [2022-11-22 02:26:47,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:47,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092879930] [2022-11-22 02:26:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:47,093 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 02:26:47,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:47,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092879930] [2022-11-22 02:26:47,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092879930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:47,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:26:47,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:26:47,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570579240] [2022-11-22 02:26:47,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:47,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:26:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:26:47,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:26:47,098 INFO L87 Difference]: Start difference. First operand 32 states and 37 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 02:26:47,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:47,131 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-22 02:26:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:26:47,132 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 02:26:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:47,133 INFO L225 Difference]: With dead ends: 32 [2022-11-22 02:26:47,133 INFO L226 Difference]: Without dead ends: 31 [2022-11-22 02:26:47,134 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 02:26:47,135 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:47,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 42 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:26:47,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-22 02:26:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-22 02:26:47,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 states have internal predecessors, (32), 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 02:26:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-11-22 02:26:47,142 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 6 [2022-11-22 02:26:47,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:47,143 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-11-22 02:26:47,143 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 02:26:47,143 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-11-22 02:26:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:26:47,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:47,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:47,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:26:47,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:47,146 INFO L85 PathProgramCache]: Analyzing trace with hash -634162435, now seen corresponding path program 1 times [2022-11-22 02:26:47,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:47,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93952374] [2022-11-22 02:26:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:47,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:47,263 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 02:26:47,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93952374] [2022-11-22 02:26:47,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93952374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:47,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253539783] [2022-11-22 02:26:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:47,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:47,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:47,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:47,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:26:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:47,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:26:47,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:47,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:26:47,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253539783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:47,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:26:47,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-22 02:26:47,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234400058] [2022-11-22 02:26:47,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:47,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:26:47,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:47,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:26:47,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:26:47,412 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:26:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:47,474 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-22 02:26:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:26:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:26:47,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:47,476 INFO L225 Difference]: With dead ends: 53 [2022-11-22 02:26:47,476 INFO L226 Difference]: Without dead ends: 34 [2022-11-22 02:26:47,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 02:26:47,478 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:47,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:26:47,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-22 02:26:47,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-22 02:26:47,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 29 states have internal predecessors, (34), 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 02:26:47,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-22 02:26:47,485 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 7 [2022-11-22 02:26:47,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:47,486 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-22 02:26:47,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:26:47,486 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-22 02:26:47,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:26:47,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:47,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-11-22 02:26:47,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:26:47,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:47,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:47,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash -634171476, now seen corresponding path program 1 times [2022-11-22 02:26:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:47,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007424644] [2022-11-22 02:26:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:26:47,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:47,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007424644] [2022-11-22 02:26:47,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007424644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:47,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534224146] [2022-11-22 02:26:47,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:47,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:47,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:47,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:47,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:26:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:47,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:26:47,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:48,054 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 02:26:48,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:26:48,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534224146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:48,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:26:48,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-11-22 02:26:48,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744453917] [2022-11-22 02:26:48,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:48,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:26:48,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:48,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:26:48,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:26:48,065 INFO L87 Difference]: Start difference. First operand 33 states and 38 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 02:26:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:48,127 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-22 02:26:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:26:48,128 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 02:26:48,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:48,129 INFO L225 Difference]: With dead ends: 33 [2022-11-22 02:26:48,129 INFO L226 Difference]: Without dead ends: 32 [2022-11-22 02:26:48,129 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 02:26:48,131 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:48,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 44 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:26:48,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-22 02:26:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-11-22 02:26:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 26 states have internal predecessors, (31), 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 02:26:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2022-11-22 02:26:48,145 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2022-11-22 02:26:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:48,146 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2022-11-22 02:26:48,146 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 02:26:48,147 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2022-11-22 02:26:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:26:48,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:48,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:48,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 02:26:48,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:48,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:48,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1815801063, now seen corresponding path program 1 times [2022-11-22 02:26:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:48,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154936418] [2022-11-22 02:26:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:48,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:48,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:48,429 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 02:26:48,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:48,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154936418] [2022-11-22 02:26:48,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154936418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:48,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974429913] [2022-11-22 02:26:48,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:48,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:48,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:48,432 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:48,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:26:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:48,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:26:48,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:48,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:26:48,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974429913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:48,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:26:48,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-11-22 02:26:48,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085728981] [2022-11-22 02:26:48,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:48,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:26:48,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:48,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:26:48,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:26:48,551 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:26:48,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:48,584 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-22 02:26:48,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:26:48,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 02:26:48,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:48,587 INFO L225 Difference]: With dead ends: 30 [2022-11-22 02:26:48,587 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:26:48,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 02:26:48,591 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:48,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:26:48,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:26:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 02:26:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 25 states have internal predecessors, (30), 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 02:26:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-22 02:26:48,604 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 8 [2022-11-22 02:26:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:48,605 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-22 02:26:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:26:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-22 02:26:48,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:26:48,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:48,606 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:48,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:26:48,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:48,817 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:48,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:48,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1228104052, now seen corresponding path program 1 times [2022-11-22 02:26:48,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:48,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76483850] [2022-11-22 02:26:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:48,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:26:48,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:48,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76483850] [2022-11-22 02:26:48,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76483850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:48,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697615015] [2022-11-22 02:26:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:48,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:48,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:48,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:48,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:26:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:48,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:26:48,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:26:49,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:26:49,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697615015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:49,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:26:49,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2022-11-22 02:26:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713071996] [2022-11-22 02:26:49,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:49,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:26:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:49,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:26:49,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:26:49,006 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:26:49,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:49,050 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-22 02:26:49,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:26:49,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 02:26:49,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:49,053 INFO L225 Difference]: With dead ends: 29 [2022-11-22 02:26:49,054 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 02:26:49,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 02:26:49,055 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:49,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:26:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 02:26:49,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-22 02:26:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.4) internal successors, (28), 23 states have internal predecessors, (28), 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 02:26:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2022-11-22 02:26:49,061 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 10 [2022-11-22 02:26:49,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:49,061 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2022-11-22 02:26:49,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:26:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2022-11-22 02:26:49,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 02:26:49,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:49,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:49,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:26:49,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:49,269 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:49,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:49,269 INFO L85 PathProgramCache]: Analyzing trace with hash -983799699, now seen corresponding path program 1 times [2022-11-22 02:26:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:49,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081134881] [2022-11-22 02:26:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:49,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:49,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:49,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081134881] [2022-11-22 02:26:49,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081134881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:49,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607400106] [2022-11-22 02:26:49,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:49,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:49,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:49,382 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:49,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:26:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:49,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:26:49,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:49,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:49,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:26:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:49,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607400106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:26:49,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1198308574] [2022-11-22 02:26:49,557 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-22 02:26:49,558 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:26:49,562 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:26:49,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:26:49,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:26:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,790 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:26:49,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:26:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-22 02:26:49,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:49,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:26:50,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:26:50,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:50,600 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,602 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,642 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-22 02:26:50,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 441 treesize of output 392 [2022-11-22 02:26:50,788 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,801 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:26:50,802 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:26:50,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,895 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:50,931 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:50,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:51,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:51,060 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:51,094 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:51,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:51,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:51,273 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:51,312 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:51,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:51,362 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-11-22 02:26:51,372 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:26:52,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1198308574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:52,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:26:52,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 4, 5] total 22 [2022-11-22 02:26:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997000102] [2022-11-22 02:26:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:52,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:26:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:26:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:26:52,642 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:26:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:53,501 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-22 02:26:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:26:53,504 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-22 02:26:53,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:53,505 INFO L225 Difference]: With dead ends: 46 [2022-11-22 02:26:53,505 INFO L226 Difference]: Without dead ends: 34 [2022-11-22 02:26:53,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:26:53,506 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 50 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:53,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 50 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:26:53,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-22 02:26:53,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-22 02:26:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.32) internal successors, (33), 28 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:26:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-22 02:26:53,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 16 [2022-11-22 02:26:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:53,528 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-22 02:26:53,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:26:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-22 02:26:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:26:53,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:53,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:53,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:26:53,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:53,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1471710425, now seen corresponding path program 1 times [2022-11-22 02:26:53,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178498784] [2022-11-22 02:26:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:53,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:53,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:53,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:53,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178498784] [2022-11-22 02:26:53,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178498784] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:53,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613425701] [2022-11-22 02:26:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:53,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:53,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:53,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:53,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:26:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:53,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:26:53,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:53,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:26:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:26:53,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613425701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:26:53,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1765093991] [2022-11-22 02:26:53,962 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 02:26:53,963 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:26:53,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:26:53,963 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:26:53,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:26:54,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,094 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:26:54,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:26:54,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-22 02:26:54,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:26:54,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:26:54,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:54,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:54,607 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:54,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:54,670 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-22 02:26:54,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-11-22 02:26:55,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,257 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:26:55,258 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:26:55,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,377 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:55,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:55,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,490 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:55,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:55,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,710 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:55,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:55,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:55,900 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:55,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:55,933 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 24 for LOIs [2022-11-22 02:26:55,939 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:26:57,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1765093991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:26:57,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:26:57,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 4, 5] total 23 [2022-11-22 02:26:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134487549] [2022-11-22 02:26:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:26:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:26:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:26:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:26:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:26:57,193 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:26:58,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:26:58,096 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-11-22 02:26:58,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:26:58,097 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-22 02:26:58,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:26:58,100 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:26:58,101 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 02:26:58,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2022-11-22 02:26:58,104 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:26:58,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:26:58,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 02:26:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-22 02:26:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 02:26:58,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-11-22 02:26:58,122 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 17 [2022-11-22 02:26:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:26:58,123 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-11-22 02:26:58,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:26:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-11-22 02:26:58,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 02:26:58,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:26:58,125 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:26:58,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 02:26:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:58,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:26:58,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:26:58,331 INFO L85 PathProgramCache]: Analyzing trace with hash -750509477, now seen corresponding path program 1 times [2022-11-22 02:26:58,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:26:58,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920398456] [2022-11-22 02:26:58,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:58,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:26:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:26:58,394 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:26:58,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920398456] [2022-11-22 02:26:58,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920398456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:26:58,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778532804] [2022-11-22 02:26:58,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:26:58,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:26:58,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:26:58,397 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:26:58,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:26:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:26:58,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:26:58,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:26:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:26:58,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:26:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:26:58,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778532804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:26:58,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2002266034] [2022-11-22 02:26:58,546 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 02:26:58,546 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:26:58,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:26:58,547 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:26:58,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:26:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,637 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:26:58,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:26:58,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-22 02:26:58,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:26:58,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:58,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:26:59,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,080 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,082 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:26:59,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,116 INFO L321 Elim1Store]: treesize reduction 141, result has 7.2 percent of original size [2022-11-22 02:26:59,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 461 treesize of output 392 [2022-11-22 02:26:59,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,233 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:26:59,234 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:26:59,302 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,336 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:59,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:26:59,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:26:59,434 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:26:59,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:00,334 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:00,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:00,367 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:00,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:00,400 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 02:27:00,415 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:27:02,410 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1300#(and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post7#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-22 02:27:02,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:27:02,411 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:27:02,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 10 [2022-11-22 02:27:02,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115845814] [2022-11-22 02:27:02,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:27:02,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:27:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:27:02,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:27:02,413 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:27:02,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:02,511 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2022-11-22 02:27:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:27:02,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-22 02:27:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:02,513 INFO L225 Difference]: With dead ends: 85 [2022-11-22 02:27:02,513 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:27:02,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:27:02,514 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:02,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 96 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:27:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:27:02,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-11-22 02:27:02,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.2162162162162162) internal successors, (45), 40 states have internal predecessors, (45), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 02:27:02,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2022-11-22 02:27:02,526 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 23 [2022-11-22 02:27:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:02,527 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2022-11-22 02:27:02,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:27:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2022-11-22 02:27:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 02:27:02,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:02,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:02,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:27:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:02,734 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:27:02,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1236621691, now seen corresponding path program 2 times [2022-11-22 02:27:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:02,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906810414] [2022-11-22 02:27:02,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:02,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:27:02,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:02,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906810414] [2022-11-22 02:27:02,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906810414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:02,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303217574] [2022-11-22 02:27:02,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:27:02,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:02,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:02,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:02,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:27:02,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 02:27:02,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:27:02,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:27:02,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:02,938 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 02:27:02,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:27:02,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303217574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:02,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:27:02,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-22 02:27:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103388025] [2022-11-22 02:27:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:02,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:27:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:27:02,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:27:02,941 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 02:27:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:03,006 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-11-22 02:27:03,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:27:03,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 29 [2022-11-22 02:27:03,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:03,008 INFO L225 Difference]: With dead ends: 49 [2022-11-22 02:27:03,008 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:27:03,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:27:03,009 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:03,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 37 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:27:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:27:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-22 02:27:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 02:27:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2022-11-22 02:27:03,022 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 29 [2022-11-22 02:27:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:03,023 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2022-11-22 02:27:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 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 02:27:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2022-11-22 02:27:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 02:27:03,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:03,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:03,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:27:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:27:03,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:27:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash -720363099, now seen corresponding path program 1 times [2022-11-22 02:27:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:03,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721910577] [2022-11-22 02:27:03,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:03,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:03,294 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 02:27:03,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:03,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721910577] [2022-11-22 02:27:03,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721910577] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:03,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084575110] [2022-11-22 02:27:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:03,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:03,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:03,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:03,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:27:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:03,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:27:03,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:03,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:27:03,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:27:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:27:03,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084575110] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:27:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1579231695] [2022-11-22 02:27:03,602 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 02:27:03,602 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:27:03,602 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:27:03,603 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:27:03,603 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:27:03,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,697 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-22 02:27:03,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-22 02:27:03,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,787 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:27:03,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:27:03,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:27:03,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:03,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:27:04,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,236 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:04,286 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-22 02:27:04,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-11-22 02:27:04,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,716 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:27:04,717 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:27:04,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,811 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:04,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:04,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:04,896 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:04,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:05,730 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:05,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:05,764 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:05,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:05,808 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 02:27:05,830 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:27:07,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1579231695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:07,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:27:07,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [4, 8, 9] total 32 [2022-11-22 02:27:07,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84209461] [2022-11-22 02:27:07,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:07,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:27:07,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:07,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:27:07,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=853, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:27:07,591 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:27:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:08,457 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2022-11-22 02:27:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:27:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-22 02:27:08,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:08,459 INFO L225 Difference]: With dead ends: 56 [2022-11-22 02:27:08,459 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 02:27:08,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2022-11-22 02:27:08,461 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:08,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 52 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:08,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 02:27:08,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 02:27:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:27:08,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-22 02:27:08,470 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 30 [2022-11-22 02:27:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:08,471 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-22 02:27:08,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:27:08,471 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-22 02:27:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-22 02:27:08,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:08,472 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:08,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-22 02:27:08,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:27:08,678 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:27:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash -319433152, now seen corresponding path program 1 times [2022-11-22 02:27:08,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:08,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313669719] [2022-11-22 02:27:08,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:08,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:08,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 02:27:08,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:08,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313669719] [2022-11-22 02:27:08,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313669719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:08,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945260007] [2022-11-22 02:27:08,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:08,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:08,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:08,735 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:08,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:27:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:08,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:27:08,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:27:08,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:27:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:27:08,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945260007] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:27:08,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730523263] [2022-11-22 02:27:09,001 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 02:27:09,001 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:27:09,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:27:09,002 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:27:09,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:27:09,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,090 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:27:09,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:27:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-22 02:27:09,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:27:09,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:27:09,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:09,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:09,515 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:09,518 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:09,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:09,522 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:09,622 INFO L321 Elim1Store]: treesize reduction 338, result has 8.6 percent of original size [2022-11-22 02:27:09,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 449 treesize of output 412 [2022-11-22 02:27:10,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,040 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:27:10,041 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:27:10,090 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,091 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,121 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:10,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:10,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,176 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,203 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:10,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:10,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,827 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:10,858 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:10,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:10,892 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 39 for LOIs [2022-11-22 02:27:10,902 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:27:12,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1730523263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:12,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:27:12,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 8, 9] total 31 [2022-11-22 02:27:12,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153004279] [2022-11-22 02:27:12,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:12,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:27:12,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:12,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:27:12,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:27:12,626 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:27:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:14,070 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2022-11-22 02:27:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:27:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-11-22 02:27:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:14,074 INFO L225 Difference]: With dead ends: 48 [2022-11-22 02:27:14,075 INFO L226 Difference]: Without dead ends: 47 [2022-11-22 02:27:14,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:27:14,077 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:14,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 46 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:27:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-22 02:27:14,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2022-11-22 02:27:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:27:14,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-22 02:27:14,090 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2022-11-22 02:27:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:14,090 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-22 02:27:14,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:27:14,090 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-22 02:27:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-22 02:27:14,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:14,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:14,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 02:27:14,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:14,296 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:27:14,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:14,296 INFO L85 PathProgramCache]: Analyzing trace with hash 436674508, now seen corresponding path program 1 times [2022-11-22 02:27:14,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:14,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803520901] [2022-11-22 02:27:14,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:14,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 02:27:14,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:14,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803520901] [2022-11-22 02:27:14,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803520901] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:14,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574445578] [2022-11-22 02:27:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:14,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:14,355 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:14,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 02:27:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:14,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:27:14,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:14,543 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:27:14,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:27:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:27:14,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574445578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:27:14,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2083913379] [2022-11-22 02:27:14,644 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-22 02:27:14,644 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:27:14,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:27:14,645 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:27:14,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:27:14,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,740 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-22 02:27:14,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-22 02:27:14,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,841 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:27:14,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:27:14,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:27:14,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:14,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:27:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,197 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:15,295 INFO L321 Elim1Store]: treesize reduction 328, result has 11.4 percent of original size [2022-11-22 02:27:15,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 8 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 449 treesize of output 422 [2022-11-22 02:27:15,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,717 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:27:15,718 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:27:15,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,780 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,817 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:15,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:15,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:15,910 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:15,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:16,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:16,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:16,778 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:16,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:16,813 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 02:27:16,815 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:27:18,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2083913379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:18,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:27:18,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [4, 8, 9] total 36 [2022-11-22 02:27:18,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117965578] [2022-11-22 02:27:18,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:18,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-22 02:27:18,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-22 02:27:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1089, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 02:27:18,801 INFO L87 Difference]: Start difference. First operand 34 states and 37 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 02:27:20,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:20,619 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-22 02:27:20,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 02:27:20,620 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 31 [2022-11-22 02:27:20,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:20,620 INFO L225 Difference]: With dead ends: 52 [2022-11-22 02:27:20,621 INFO L226 Difference]: Without dead ends: 50 [2022-11-22 02:27:20,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=237, Invalid=1569, Unknown=0, NotChecked=0, Total=1806 [2022-11-22 02:27:20,623 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 83 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:20,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 48 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:20,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-22 02:27:20,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2022-11-22 02:27:20,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 02:27:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-22 02:27:20,638 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 31 [2022-11-22 02:27:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:20,638 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-22 02:27:20,638 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 02:27:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-22 02:27:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 02:27:20,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:27:20,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:20,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 02:27:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:20,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-22 02:27:20,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:27:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash 923284082, now seen corresponding path program 1 times [2022-11-22 02:27:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:27:20,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425679464] [2022-11-22 02:27:20,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:20,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:27:20,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-22 02:27:20,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:27:20,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425679464] [2022-11-22 02:27:20,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425679464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:27:20,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085607602] [2022-11-22 02:27:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:27:20,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:27:20,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:27:20,914 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:27:20,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 02:27:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:27:21,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:27:21,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:27:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:27:21,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:27:21,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:27:21,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085607602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:27:21,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1039161268] [2022-11-22 02:27:21,179 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 02:27:21,179 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:27:21,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:27:21,179 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:27:21,179 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:27:21,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,258 INFO L321 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2022-11-22 02:27:21,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 42 [2022-11-22 02:27:21,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,336 INFO L321 Elim1Store]: treesize reduction 129, result has 17.8 percent of original size [2022-11-22 02:27:21,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 55 treesize of output 73 [2022-11-22 02:27:21,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2022-11-22 02:27:21,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 73 [2022-11-22 02:27:21,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,631 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:21,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:21,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:21,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:21,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:27:21,685 INFO L321 Elim1Store]: treesize reduction 176, result has 19.3 percent of original size [2022-11-22 02:27:21,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 429 treesize of output 398 [2022-11-22 02:27:22,084 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:22,096 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-11-22 02:27:22,096 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 1 case distinctions, treesize of input 39 treesize of output 27 [2022-11-22 02:27:22,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:22,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:22,179 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:22,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:22,226 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:22,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:22,257 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:22,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:23,493 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:23,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:27:23,531 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-22 02:27:23,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 62 [2022-11-22 02:27:23,564 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2022-11-22 02:27:23,566 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:27:26,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1039161268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:27:26,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:27:26,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [4, 8, 9] total 36 [2022-11-22 02:27:26,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004878193] [2022-11-22 02:27:26,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:27:26,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-22 02:27:26,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:27:26,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-22 02:27:26,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1085, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 02:27:26,234 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:27:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:27:28,199 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-22 02:27:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 02:27:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-11-22 02:27:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:27:28,200 INFO L225 Difference]: With dead ends: 39 [2022-11-22 02:27:28,201 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:27:28,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=231, Invalid=1491, Unknown=0, NotChecked=0, Total=1722 [2022-11-22 02:27:28,202 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 42 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:27:28,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 9 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:27:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:27:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:27:28,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:27:28,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:27:28,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-11-22 02:27:28,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:27:28,204 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:27:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:27:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:27:28,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:27:28,208 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-11-22 02:27:28,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-11-22 02:27:28,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-11-22 02:27:28,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-11-22 02:27:28,209 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-11-22 02:27:28,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-11-22 02:27:28,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-11-22 02:27:28,210 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-11-22 02:27:28,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 02:27:28,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 02:27:28,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:27:30,317 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-11-22 02:27:30,318 INFO L899 garLoopResultBuilder]: For program point L23-3(line 23) no Hoare annotation was computed. [2022-11-22 02:27:30,318 INFO L899 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2022-11-22 02:27:30,318 INFO L895 garLoopResultBuilder]: At program point L23-5(lines 23 26) the Hoare annotation is: (let ((.cse5 (<= 1 |ULTIMATE.start_main_~j~0#1|))) (and (let ((.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse2 (<= |ULTIMATE.start_main_~i~0#1| 0)) (.cse3 (<= 0 |ULTIMATE.start_main_~#c~0#1.offset|)) (.cse4 (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|)) (.cse6 (<= |#NULL.offset| 0)) (.cse7 (<= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse8 (<= 0 |ULTIMATE.start_main_~i~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse10 (<= |#NULL.base| 0)) (.cse11 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse12 (<= 0 |#NULL.offset|)) (.cse13 (<= 1 |ULTIMATE.start_main_~rv~0#1|)) (.cse14 (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|))) (or (and .cse0 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) .cse1 .cse2 .cse3 .cse4 .cse5 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) .cse6 .cse7 .cse8 (<= |ULTIMATE.start_main_~j~0#1| 2147483647) .cse9 .cse10 .cse11 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) .cse12 .cse13 .cse14 (<= 0 |#StackHeapBarrier|)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse6 (<= 0 |ULTIMATE.start_main_~j~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (<= |ULTIMATE.start_main_~j~0#1| 0)))) (or .cse5 (let ((.cse15 (select |#memory_int| 1))) (and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#c~0#1.base|) (= 34 (select |#length| 2)) (= 400000 (select |#length| |ULTIMATE.start_main_~#b~0#1.base|)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#a~0#1.base|) (= 2 (select |#length| 1)) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#b~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#c~0#1.base|) 1) (= 400000 (select |#length| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#valid| 1) 1) (= (select |#valid| |ULTIMATE.start_main_~#b~0#1.base|) 1) (= (select |#valid| |ULTIMATE.start_main_~#a~0#1.base|) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (not (= |ULTIMATE.start_main_~#c~0#1.base| |ULTIMATE.start_main_~#b~0#1.base|)) (not (= |ULTIMATE.start_main_~#c~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select .cse15 0) 48) (not (= |ULTIMATE.start_main_~#b~0#1.base| |ULTIMATE.start_main_~#a~0#1.base|)) (= (select |#length| |ULTIMATE.start_main_~#c~0#1.base|) 400000) (= (select .cse15 1) 0) (< 0 |#StackHeapBarrier|)))))) [2022-11-22 02:27:30,319 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2022-11-22 02:27:30,319 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 40) no Hoare annotation was computed. [2022-11-22 02:27:30,319 INFO L899 garLoopResultBuilder]: For program point L36-1(lines 36 40) no Hoare annotation was computed. [2022-11-22 02:27:30,319 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-22 02:27:30,320 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:27:30,320 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-22 02:27:30,320 INFO L895 garLoopResultBuilder]: At program point L28-1(lines 16 45) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) [2022-11-22 02:27:30,320 INFO L899 garLoopResultBuilder]: For program point L41-3(line 41) no Hoare annotation was computed. [2022-11-22 02:27:30,320 INFO L899 garLoopResultBuilder]: For program point L41-4(line 41) no Hoare annotation was computed. [2022-11-22 02:27:30,321 INFO L895 garLoopResultBuilder]: At program point L41-5(lines 41 43) the Hoare annotation is: (let ((.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse0 (<= 0 |#NULL.base|)) (.cse1 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse2 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse3 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0)) (.cse4 (<= 0 |ULTIMATE.start_main_~#c~0#1.offset|)) (.cse5 (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|)) (.cse6 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|)) (.cse7 (<= |#NULL.offset| 0)) (.cse8 (<= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse10 (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) (.cse11 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0)) (.cse12 (<= |#NULL.base| 0)) (.cse13 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse14 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse15 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse16 (<= 0 |#NULL.offset|)) (.cse17 (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|)) (.cse18 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~x~0#1| 2147483647) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 .cse15 .cse16 .cse17 .cse18) (and .cse1 .cse2 (= |ULTIMATE.start_main_~#b~0#1.offset| 0) .cse6 .cse9 .cse10 (= |ULTIMATE.start_main_~rv~0#1| 0) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse14 (= |#NULL.offset| 0) .cse15 .cse18 (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) (and .cse0 .cse1 (<= 0 |ULTIMATE.start_main_~x~0#1|) .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse10 .cse11 .cse12 .cse13 .cse14 (<= |ULTIMATE.start_main_~x~0#1| 0) .cse15 .cse16 .cse17 .cse18))) [2022-11-22 02:27:30,321 INFO L899 garLoopResultBuilder]: For program point L37-3(line 37) no Hoare annotation was computed. [2022-11-22 02:27:30,321 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2022-11-22 02:27:30,321 INFO L899 garLoopResultBuilder]: For program point L33(line 33) no Hoare annotation was computed. [2022-11-22 02:27:30,321 INFO L899 garLoopResultBuilder]: For program point L37-4(line 37) no Hoare annotation was computed. [2022-11-22 02:27:30,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:27:30,322 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-11-22 02:27:30,322 INFO L895 garLoopResultBuilder]: At program point L37-5(lines 37 39) the Hoare annotation is: (let ((.cse0 (<= 100000 |ULTIMATE.start_main_~i~0#1|)) (.cse1 (<= 0 |ULTIMATE.start_main_~#a~0#1.base|)) (.cse2 (<= 0 |ULTIMATE.start_main_~#c~0#1.base|)) (.cse3 (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) (.cse4 (<= |ULTIMATE.start_main_~rv~0#1| 1)) (.cse5 (<= 100000 |ULTIMATE.start_main_~j~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~#b~0#1.base|)) (.cse7 (<= 0 |#StackHeapBarrier|)) (.cse8 (= |ULTIMATE.start_main_~#c~0#1.offset| 0)) (.cse9 (= |#NULL.base| 0))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) .cse2 (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) .cse3 (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse4 .cse5 .cse6 (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~#b~0#1.offset|) .cse7 .cse8 .cse9) (and .cse0 .cse1 (= |ULTIMATE.start_main_~#b~0#1.offset| 0) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~#a~0#1.offset| 0) .cse5 (= |#NULL.offset| 0) (not (= |ULTIMATE.start_main_~rv~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0) .cse6 .cse7 .cse8 .cse9))) [2022-11-22 02:27:30,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 37) no Hoare annotation was computed. [2022-11-22 02:27:30,323 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| 4))) (and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (< |ULTIMATE.start_main_~x~0#1| 100000) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| .cse0)) |ULTIMATE.start_main_#t~mem11#1|) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#c~0#1.base|) (+ |ULTIMATE.start_main_~#c~0#1.offset| .cse0)) |ULTIMATE.start_main_#t~mem12#1|) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0))) [2022-11-22 02:27:30,323 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2022-11-22 02:27:30,323 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (<= 100000 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_main_~#b~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#c~0#1.base|) (<= |ULTIMATE.start_main_~j~0#1| 2147483647) (<= |ULTIMATE.start_main_~rv~0#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 100000 |ULTIMATE.start_main_~j~0#1|) (= |#NULL.offset| 0) (let ((.cse2 (* |ULTIMATE.start_main_~x~0#1| 4))) (let ((.cse0 (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| .cse2)) |ULTIMATE.start_main_#t~mem8#1|)) (.cse1 (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#b~0#1.base|) (+ |ULTIMATE.start_main_~#b~0#1.offset| .cse2))))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~x~0#1|) (< |ULTIMATE.start_main_~x~0#1| 100000) .cse1) (and .cse0 .cse1 (not (= |ULTIMATE.start_main_~rv~0#1| 0)) (= |ULTIMATE.start_main_~x~0#1| 0))))) (<= 0 |ULTIMATE.start_main_~#b~0#1.base|) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#c~0#1.offset| 0) (= |#NULL.base| 0)) [2022-11-22 02:27:30,323 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2022-11-22 02:27:30,323 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 33) no Hoare annotation was computed. [2022-11-22 02:27:30,324 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 41) no Hoare annotation was computed. [2022-11-22 02:27:30,324 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(line 13) the Hoare annotation is: true [2022-11-22 02:27:30,324 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(line 13) no Hoare annotation was computed. [2022-11-22 02:27:30,328 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:27:30,330 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:27:30,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:27:30 BoogieIcfgContainer [2022-11-22 02:27:30,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:27:30,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:27:30,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:27:30,359 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:27:30,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:26:46" (3/4) ... [2022-11-22 02:27:30,363 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:27:30,369 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-22 02:27:30,374 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-22 02:27:30,374 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-22 02:27:30,374 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-22 02:27:30,375 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:27:30,415 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:27:30,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:27:30,416 INFO L158 Benchmark]: Toolchain (without parser) took 45262.26ms. Allocated memory was 199.2MB in the beginning and 415.2MB in the end (delta: 216.0MB). Free memory was 164.4MB in the beginning and 275.7MB in the end (delta: -111.3MB). Peak memory consumption was 106.4MB. Max. memory is 16.1GB. [2022-11-22 02:27:30,416 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 153.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:27:30,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.36ms. Allocated memory is still 199.2MB. Free memory was 164.4MB in the beginning and 153.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:27:30,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.76ms. Allocated memory is still 199.2MB. Free memory was 153.9MB in the beginning and 152.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:27:30,417 INFO L158 Benchmark]: Boogie Preprocessor took 65.52ms. Allocated memory is still 199.2MB. Free memory was 152.4MB in the beginning and 150.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:27:30,417 INFO L158 Benchmark]: RCFGBuilder took 646.93ms. Allocated memory is still 199.2MB. Free memory was 150.5MB in the beginning and 135.0MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-22 02:27:30,418 INFO L158 Benchmark]: TraceAbstraction took 44128.15ms. Allocated memory was 199.2MB in the beginning and 415.2MB in the end (delta: 216.0MB). Free memory was 133.7MB in the beginning and 279.9MB in the end (delta: -146.2MB). Peak memory consumption was 217.8MB. Max. memory is 16.1GB. [2022-11-22 02:27:30,418 INFO L158 Benchmark]: Witness Printer took 56.83ms. Allocated memory is still 415.2MB. Free memory was 278.9MB in the beginning and 275.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:27:30,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 153.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 294.36ms. Allocated memory is still 199.2MB. Free memory was 164.4MB in the beginning and 153.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.76ms. Allocated memory is still 199.2MB. Free memory was 153.9MB in the beginning and 152.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.52ms. Allocated memory is still 199.2MB. Free memory was 152.4MB in the beginning and 150.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 646.93ms. Allocated memory is still 199.2MB. Free memory was 150.5MB in the beginning and 135.0MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 44128.15ms. Allocated memory was 199.2MB in the beginning and 415.2MB in the end (delta: 216.0MB). Free memory was 133.7MB in the beginning and 279.9MB in the end (delta: -146.2MB). Peak memory consumption was 217.8MB. Max. memory is 16.1GB. * Witness Printer took 56.83ms. Allocated memory is still 415.2MB. Free memory was 278.9MB in the beginning and 275.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 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: 33]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 33]: 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: 37]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 41]: 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, 30 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 44.0s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 416 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 393 mSDsluCounter, 663 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 451 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1524 IncrementalHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 212 mSDtfsCounter, 1524 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 681 GetRequests, 435 SyntacticMatches, 3 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2433 ImplicationChecksByTransitivity, 19.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=9, InterpolantAutomatonStates: 132, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 36 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 20 PreInvPairs, 36 NumberOfFragments, 688 HoareAnnotationTreeSize, 20 FomulaSimplifications, 728 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 5432 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 501 NumberOfCodeBlocks, 482 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 653 ConstructedInterpolants, 0 QuantifiedInterpolants, 1113 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1594 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 33 InterpolantComputations, 7 PerfectInterpolantSequences, 213/329 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: 12.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 12, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 124, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 264, TOOLS_POST_TIME: 8.8s, TOOLS_POST_CALL_APPLICATIONS: 64, TOOLS_POST_CALL_TIME: 1.9s, TOOLS_POST_RETURN_APPLICATIONS: 56, TOOLS_POST_RETURN_TIME: 0.3s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 384, TOOLS_QUANTIFIERELIM_TIME: 10.8s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.7s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 568, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 78, DOMAIN_JOIN_TIME: 0.6s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 29, DOMAIN_WIDEN_TIME: 0.5s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 46, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 124, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 17, LOOP_SUMMARIZER_CACHE_MISSES: 17, LOOP_SUMMARIZER_OVERALL_TIME: 8.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 8.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 46, CALL_SUMMARIZER_APPLICATIONS: 56, CALL_SUMMARIZER_CACHE_MISSES: 6, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, 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: 2990, DAG_COMPRESSION_RETAINED_NODES: 394, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= #NULL && 0 <= a) && b <= 0) && i <= 0) && 0 <= c) && 0 <= a) && 1 <= j) && 0 <= c) && #NULL <= 0) && c <= 0) && 0 <= i) && j <= 2147483647) && a <= 0) && #NULL <= 0) && rv <= 1) && 0 <= b) && 0 <= #NULL) && 1 <= rv) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((0 <= #NULL && b <= 0) && i <= 0) && 0 <= c) && 0 <= a) && #NULL <= 0) && 0 <= j) && c <= 0) && 0 <= i) && a <= 0) && #NULL <= 0) && rv <= 1) && 0 <= #NULL) && 1 <= rv) && 0 <= b) && j <= 0)) && (1 <= j || (((((((((((((((((((unknown-#StackHeapBarrier-unknown < c && 34 == unknown-#length-unknown[2]) && 400000 == unknown-#length-unknown[b]) && unknown-#StackHeapBarrier-unknown < a) && 2 == unknown-#length-unknown[1]) && unknown-#StackHeapBarrier-unknown < b) && \valid[c] == 1) && 400000 == unknown-#length-unknown[a]) && \valid[1] == 1) && \valid[b] == 1) && \valid[a] == 1) && \valid[0] == 0) && \valid[2] == 1) && !(c == b)) && !(c == a)) && unknown-#memory_int-unknown[1][0] == 48) && !(b == a)) && unknown-#length-unknown[c] == 400000) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown)) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((((((((100000 <= i && 0 <= a) && b <= 0) && x <= 2147483647) && 0 <= a) && 0 <= c) && #NULL <= 0) && 1 <= x) && j <= 2147483647) && a <= 0) && rv <= 1) && 100000 <= j) && 0 <= b) && 0 <= #NULL) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) || ((((((((((((((100000 <= i && 0 <= a) && b == 0) && 0 <= c) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && !(rv == 0)) && x == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (((((((((((0 <= a && b == 0) && 0 <= c) && 0 <= i) && j <= 2147483647) && rv <= 1) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0 - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((((((((((((0 <= #NULL && 100000 <= i) && 0 <= a) && b <= 0) && x <= 2147483647) && 0 <= c) && 0 <= a) && 0 <= c) && #NULL <= 0) && c <= 0) && 1 <= x) && j <= 2147483647) && a <= 0) && #NULL <= 0) && rv <= 1) && 100000 <= j) && 0 <= b) && 0 <= #NULL) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((100000 <= i && 0 <= a) && b == 0) && 0 <= c) && 1 <= x) && j <= 2147483647) && rv == 0) && a == 0) && 100000 <= j) && #NULL == 0) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) && c == 0) && #NULL == 0)) || (((((((((((((((((((0 <= #NULL && 100000 <= i) && 0 <= x) && 0 <= a) && b <= 0) && 0 <= c) && 0 <= a) && 0 <= c) && #NULL <= 0) && c <= 0) && j <= 2147483647) && a <= 0) && #NULL <= 0) && rv <= 1) && 100000 <= j) && x <= 0) && 0 <= b) && 0 <= #NULL) && 0 <= b) && 0 <= unknown-#StackHeapBarrier-unknown) RESULT: Ultimate proved your program to be correct! [2022-11-22 02:27:30,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_247179ea-ee0f-4bd6-b71d-d0b4980cd1e0/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