./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-tiling/pnr4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/pnr4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9 --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 c2f943c7ce97bf9be3e11b9d2df150d740ebe8f456342884d8ad0d40610fb008 --- 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-6b4ec56 [2022-11-20 21:20:53,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:20:53,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:20:53,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:20:53,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:20:53,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:20:53,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:20:53,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:20:53,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:20:53,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:20:53,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:20:53,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:20:53,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:20:53,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:20:53,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:20:53,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:20:53,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:20:53,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:20:53,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:20:53,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:20:53,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:20:53,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:20:53,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:20:53,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:20:53,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:20:53,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:20:53,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:20:53,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:20:53,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:20:53,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:20:53,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:20:53,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:20:53,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:20:53,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:20:53,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:20:53,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:20:53,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:20:53,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:20:53,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:20:53,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:20:53,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:20:53,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-20 21:20:53,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:20:53,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:20:53,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:20:53,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:20:53,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:20:53,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:20:53,214 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:20:53,215 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:20:53,215 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:20:53,216 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:20:53,216 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:20:53,216 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:20:53,217 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:20:53,217 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:20:53,217 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:20:53,218 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:20:53,218 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:20:53,218 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:20:53,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:20:53,219 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:20:53,220 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 21:20:53,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:20:53,220 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:20:53,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:20:53,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:20:53,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:20:53,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:20:53,222 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 21:20:53,222 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:20:53,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:20:53,223 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:20:53,224 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:20:53,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:20:53,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:20:53,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:20:53,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:20:53,225 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:20:53,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:20:53,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:20:53,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:20:53,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:20:53,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:20:53,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:20:53,229 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_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2f943c7ce97bf9be3e11b9d2df150d740ebe8f456342884d8ad0d40610fb008 [2022-11-20 21:20:53,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:20:53,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:20:53,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:20:53,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:20:53,540 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:20:53,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/array-tiling/pnr4.c [2022-11-20 21:20:56,669 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:20:56,973 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:20:56,974 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/sv-benchmarks/c/array-tiling/pnr4.c [2022-11-20 21:20:56,983 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/data/137606a2a/5d6f977dd46c40cfa15119308dd45041/FLAG6c68b9d8d [2022-11-20 21:20:57,006 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/data/137606a2a/5d6f977dd46c40cfa15119308dd45041 [2022-11-20 21:20:57,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:20:57,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:20:57,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:20:57,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:20:57,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:20:57,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177ee900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57, skipping insertion in model container [2022-11-20 21:20:57,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:20:57,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:20:57,247 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_3deff6fa-25bb-4a93-80b0-3f952d49de38/sv-benchmarks/c/array-tiling/pnr4.c[395,408] [2022-11-20 21:20:57,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:20:57,318 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:20:57,335 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_3deff6fa-25bb-4a93-80b0-3f952d49de38/sv-benchmarks/c/array-tiling/pnr4.c[395,408] [2022-11-20 21:20:57,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:20:57,363 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:20:57,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57 WrapperNode [2022-11-20 21:20:57,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:20:57,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:20:57,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:20:57,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:20:57,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,413 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2022-11-20 21:20:57,413 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:20:57,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:20:57,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:20:57,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:20:57,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,428 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:20:57,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:20:57,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:20:57,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:20:57,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (1/1) ... [2022-11-20 21:20:57,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:20:57,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:20:57,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:20:57,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:20:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:20:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:20:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 21:20:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 21:20:57,545 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2022-11-20 21:20:57,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2022-11-20 21:20:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:20:57,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:20:57,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 21:20:57,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:20:57,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:20:57,952 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:20:58,018 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:20:58,018 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 21:20:58,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:58 BoogieIcfgContainer [2022-11-20 21:20:58,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:20:58,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:20:58,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:20:58,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:20:58,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:20:57" (1/3) ... [2022-11-20 21:20:58,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a438fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:20:58, skipping insertion in model container [2022-11-20 21:20:58,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:20:57" (2/3) ... [2022-11-20 21:20:58,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a438fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:20:58, skipping insertion in model container [2022-11-20 21:20:58,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:20:58" (3/3) ... [2022-11-20 21:20:58,045 INFO L112 eAbstractionObserver]: Analyzing ICFG pnr4.c [2022-11-20 21:20:58,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:20:58,081 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-20 21:20:58,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:20:58,178 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;@5e1bf398, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:20:58,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-20 21:20:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 94 states have internal predecessors, (103), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:20:58,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:20:58,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:58,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:20:58,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:20:58,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:58,202 INFO L85 PathProgramCache]: Analyzing trace with hash 6328177, now seen corresponding path program 1 times [2022-11-20 21:20:58,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:58,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961474888] [2022-11-20 21:20:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:58,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:58,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961474888] [2022-11-20 21:20:58,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961474888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:58,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:58,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:20:58,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941376809] [2022-11-20 21:20:58,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:58,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:20:58,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:20:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:20:58,838 INFO L87 Difference]: Start difference. First operand has 100 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 94 states have internal predecessors, (103), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-20 21:20:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:59,106 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2022-11-20 21:20:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:20:59,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 4 [2022-11-20 21:20:59,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:59,118 INFO L225 Difference]: With dead ends: 114 [2022-11-20 21:20:59,118 INFO L226 Difference]: Without dead ends: 95 [2022-11-20 21:20:59,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-20 21:20:59,127 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 291 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 98 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:20:59,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-20 21:20:59,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-20 21:20:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 54 states have (on average 1.7592592592592593) internal successors, (95), 89 states have internal predecessors, (95), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:20:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2022-11-20 21:20:59,197 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 4 [2022-11-20 21:20:59,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:59,198 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2022-11-20 21:20:59,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2022-11-20 21:20:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2022-11-20 21:20:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 21:20:59,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:59,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:20:59,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:20:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 78049202, now seen corresponding path program 1 times [2022-11-20 21:20:59,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:59,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626922703] [2022-11-20 21:20:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:59,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:59,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:59,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626922703] [2022-11-20 21:20:59,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626922703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:59,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:59,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:20:59,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221316240] [2022-11-20 21:20:59,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:59,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:20:59,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:59,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:20:59,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:20:59,330 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 21:20:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:59,501 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-11-20 21:20:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:20:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-11-20 21:20:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:59,503 INFO L225 Difference]: With dead ends: 100 [2022-11-20 21:20:59,503 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 21:20:59,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:20:59,505 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 3 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:59,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 220 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:20:59,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 21:20:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 21:20:59,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 57 states have (on average 1.719298245614035) internal successors, (98), 92 states have internal predecessors, (98), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:20:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-11-20 21:20:59,517 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 9 [2022-11-20 21:20:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:59,517 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-11-20 21:20:59,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-11-20 21:20:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-11-20 21:20:59,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:20:59,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:59,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:59,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:20:59,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:20:59,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:59,519 INFO L85 PathProgramCache]: Analyzing trace with hash 30221846, now seen corresponding path program 1 times [2022-11-20 21:20:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:59,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617406983] [2022-11-20 21:20:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:59,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:20:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:20:59,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:20:59,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617406983] [2022-11-20 21:20:59,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617406983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:20:59,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:20:59,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:20:59,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021971822] [2022-11-20 21:20:59,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:20:59,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:20:59,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:20:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:20:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:20:59,635 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-11-20 21:20:59,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:20:59,853 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2022-11-20 21:20:59,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:20:59,854 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), 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 12 [2022-11-20 21:20:59,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:20:59,855 INFO L225 Difference]: With dead ends: 183 [2022-11-20 21:20:59,855 INFO L226 Difference]: Without dead ends: 151 [2022-11-20 21:20:59,855 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 [2022-11-20 21:20:59,856 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 47 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 21:20:59,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 96 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 21:20:59,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-20 21:20:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2022-11-20 21:20:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 100 states have (on average 1.46) internal successors, (146), 135 states have internal predecessors, (146), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:20:59,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-11-20 21:20:59,888 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 12 [2022-11-20 21:20:59,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:20:59,890 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-11-20 21:20:59,890 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), 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) [2022-11-20 21:20:59,891 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-11-20 21:20:59,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:20:59,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:20:59,892 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:20:59,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:20:59,893 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:20:59,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:20:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1586658251, now seen corresponding path program 1 times [2022-11-20 21:20:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:20:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493110057] [2022-11-20 21:20:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:20:59,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:20:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:21:00,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:21:00,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493110057] [2022-11-20 21:21:00,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493110057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:21:00,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609375934] [2022-11-20 21:21:00,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:00,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:21:00,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:21:00,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:21:00,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:21:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:00,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:21:00,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:21:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:21:00,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:21:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:21:00,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609375934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:21:00,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1562957686] [2022-11-20 21:21:00,230 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-20 21:21:00,231 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:21:00,234 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:21:00,240 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:21:00,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:21:00,413 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-20 21:21:00,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-20 21:21:00,486 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:21:00,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:21:00,575 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:21:01,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1562957686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:21:01,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:21:01,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 15 [2022-11-20 21:21:01,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422199150] [2022-11-20 21:21:01,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:21:01,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 21:21:01,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:21:01,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 21:21:01,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 21:21:01,281 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 21:21:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:21:01,965 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2022-11-20 21:21:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:21:01,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 12 [2022-11-20 21:21:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:21:01,967 INFO L225 Difference]: With dead ends: 159 [2022-11-20 21:21:01,967 INFO L226 Difference]: Without dead ends: 150 [2022-11-20 21:21:01,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-20 21:21:01,969 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 306 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:21:01,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 59 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 21:21:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-20 21:21:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2022-11-20 21:21:01,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 100 states have (on average 1.45) internal successors, (145), 135 states have internal predecessors, (145), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:21:01,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2022-11-20 21:21:01,996 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 12 [2022-11-20 21:21:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:21:01,996 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2022-11-20 21:21:01,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-11-20 21:21:01,996 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2022-11-20 21:21:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 21:21:01,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:21:01,998 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:21:02,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:21:02,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:21:02,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:21:02,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:21:02,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1536187372, now seen corresponding path program 1 times [2022-11-20 21:21:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:21:02,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594399973] [2022-11-20 21:21:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:02,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:21:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:02,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:21:02,313 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:21:02,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594399973] [2022-11-20 21:21:02,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594399973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:21:02,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:21:02,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:21:02,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746455650] [2022-11-20 21:21:02,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:21:02,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:21:02,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:21:02,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:21:02,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:21:02,315 INFO L87 Difference]: Start difference. First operand 145 states and 161 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 21:21:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:21:02,484 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2022-11-20 21:21:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:21:02,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-20 21:21:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:21:02,486 INFO L225 Difference]: With dead ends: 150 [2022-11-20 21:21:02,486 INFO L226 Difference]: Without dead ends: 148 [2022-11-20 21:21:02,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:21:02,487 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 23 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:21:02,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 160 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:21:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-20 21:21:02,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-20 21:21:02,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 103 states have (on average 1.4368932038834952) internal successors, (148), 138 states have internal predecessors, (148), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:21:02,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2022-11-20 21:21:02,511 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 44 [2022-11-20 21:21:02,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:21:02,511 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2022-11-20 21:21:02,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-20 21:21:02,511 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2022-11-20 21:21:02,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:21:02,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:21:02,513 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:21:02,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:21:02,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:21:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:21:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash -600821107, now seen corresponding path program 1 times [2022-11-20 21:21:02,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:21:02,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362076384] [2022-11-20 21:21:02,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:02,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:21:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:21:02,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:21:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362076384] [2022-11-20 21:21:02,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362076384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:21:02,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869576759] [2022-11-20 21:21:02,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:02,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:21:02,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:21:02,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:21:02,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:21:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:02,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:21:02,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:21:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:21:02,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:21:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 21:21:03,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869576759] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:21:03,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1622424118] [2022-11-20 21:21:03,032 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-20 21:21:03,032 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:21:03,033 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:21:03,033 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:21:03,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:21:03,162 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:21:03,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:21:03,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:21:03,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:21:03,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 127 [2022-11-20 21:21:04,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 142 [2022-11-20 21:21:04,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:21:06,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,231 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:06,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,243 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:06,292 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:21:06,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 49 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 650 treesize of output 635 [2022-11-20 21:21:08,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:08,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 90 [2022-11-20 21:21:09,236 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:09,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 126 [2022-11-20 21:21:09,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:09,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-11-20 21:21:09,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:09,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-20 21:21:09,629 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:09,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 76 [2022-11-20 21:21:09,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:09,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-11-20 21:21:09,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:09,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-20 21:21:09,999 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:09,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 76 [2022-11-20 21:21:10,172 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:21:10,175 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:21:14,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1988#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~MAX~0 100000) (= |ULTIMATE.start_main_~DEFAULTVAL~0#1| 0) (<= 1 ~SIZE~0) (<= |ULTIMATE.start_main_~value~0#1| 2147483647) (= 10 |ULTIMATE.start_main_~FIXEDVAL~0#1|) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (not (<= (* |ULTIMATE.start_main_~i~0#1| 4) 2147483647)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_~value~0#1|)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (not (= |ULTIMATE.start_main_~DEFAULTVAL~0#1| |ULTIMATE.start_main_~value~0#1|)) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-20 21:21:14,320 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:21:14,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:21:14,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-20 21:21:14,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303527119] [2022-11-20 21:21:14,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:21:14,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 21:21:14,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:21:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 21:21:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 21:21:14,325 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 10 states, 9 states have (on average 12.0) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 21:21:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:21:14,782 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2022-11-20 21:21:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 21:21:14,783 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 54 [2022-11-20 21:21:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:21:14,784 INFO L225 Difference]: With dead ends: 212 [2022-11-20 21:21:14,785 INFO L226 Difference]: Without dead ends: 195 [2022-11-20 21:21:14,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 124 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=244, Invalid=1238, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 21:21:14,786 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 242 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:21:14,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 203 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 21:21:14,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-20 21:21:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2022-11-20 21:21:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 156 states have (on average 1.3525641025641026) internal successors, (211), 177 states have internal predecessors, (211), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-20 21:21:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 237 transitions. [2022-11-20 21:21:14,817 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 237 transitions. Word has length 54 [2022-11-20 21:21:14,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:21:14,820 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 237 transitions. [2022-11-20 21:21:14,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.0) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 21:21:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 237 transitions. [2022-11-20 21:21:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:21:14,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:21:14,830 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:21:14,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 21:21:15,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 21:21:15,036 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:21:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:21:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash 955615298, now seen corresponding path program 1 times [2022-11-20 21:21:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:21:15,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760664872] [2022-11-20 21:21:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:15,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:21:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:15,169 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:21:15,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:21:15,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760664872] [2022-11-20 21:21:15,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760664872] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:21:15,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301999714] [2022-11-20 21:21:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:15,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:21:15,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:21:15,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:21:15,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:21:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:15,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:21:15,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:21:15,319 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:21:15,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:21:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:21:15,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301999714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:21:15,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [88837362] [2022-11-20 21:21:15,381 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:21:15,382 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:21:15,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:21:15,382 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:21:15,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:21:15,476 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:21:15,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:21:15,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:21:15,698 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:21:15,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 127 [2022-11-20 21:21:16,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 142 [2022-11-20 21:21:16,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:21:17,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:17,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:21:17,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:17,812 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:21:17,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 49 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 650 treesize of output 635 [2022-11-20 21:21:19,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:19,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 90 [2022-11-20 21:21:20,017 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:20,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 126 [2022-11-20 21:21:20,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:20,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-11-20 21:21:20,296 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:20,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-20 21:21:20,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:20,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 76 [2022-11-20 21:21:20,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:20,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-11-20 21:21:20,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:20,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-20 21:21:20,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:20,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 76 [2022-11-20 21:21:21,330 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:21:21,332 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:21:25,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [88837362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:21:25,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:21:25,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-20 21:21:25,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694888633] [2022-11-20 21:21:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:21:25,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:21:25,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:21:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:21:25,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:21:25,916 INFO L87 Difference]: Start difference. First operand 192 states and 237 transitions. Second operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:21:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:21:39,580 INFO L93 Difference]: Finished difference Result 573 states and 743 transitions. [2022-11-20 21:21:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 21:21:39,581 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:21:39,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:21:39,584 INFO L225 Difference]: With dead ends: 573 [2022-11-20 21:21:39,585 INFO L226 Difference]: Without dead ends: 546 [2022-11-20 21:21:39,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 120 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=733, Invalid=4097, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 21:21:39,588 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 755 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:21:39,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 166 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 21:21:39,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-20 21:21:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 378. [2022-11-20 21:21:39,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 324 states have (on average 1.2314814814814814) internal successors, (399), 345 states have internal predecessors, (399), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 21:21:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 461 transitions. [2022-11-20 21:21:39,644 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 461 transitions. Word has length 54 [2022-11-20 21:21:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:21:39,645 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 461 transitions. [2022-11-20 21:21:39,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:21:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 461 transitions. [2022-11-20 21:21:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:21:39,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:21:39,646 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:21:39,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:21:39,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 21:21:39,852 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:21:39,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:21:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1673139784, now seen corresponding path program 1 times [2022-11-20 21:21:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:21:39,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990713199] [2022-11-20 21:21:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:39,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:21:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:21:39,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:21:39,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990713199] [2022-11-20 21:21:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990713199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:21:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773524291] [2022-11-20 21:21:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:21:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:21:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:21:39,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:21:39,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:21:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:21:40,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:21:40,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:21:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:21:40,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:21:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:21:40,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773524291] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:21:40,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1772339360] [2022-11-20 21:21:40,114 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:21:40,114 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:21:40,116 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:21:40,116 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:21:40,117 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:21:40,198 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:21:40,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:21:40,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:21:40,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:21:40,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 127 [2022-11-20 21:21:40,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 142 [2022-11-20 21:21:41,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 32 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:21:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:42,405 INFO L321 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-11-20 21:21:42,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 64 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 44 case distinctions, treesize of input 716 treesize of output 661 [2022-11-20 21:21:43,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:43,783 INFO L321 Elim1Store]: treesize reduction 113, result has 5.8 percent of original size [2022-11-20 21:21:43,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 74 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 56 case distinctions, treesize of input 801 treesize of output 704 [2022-11-20 21:21:44,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:44,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:45,033 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-20 21:21:45,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 15 select indices, 15 select index equivalence classes, 88 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 69 case distinctions, treesize of input 825 treesize of output 722 [2022-11-20 21:21:46,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:21:46,554 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-20 21:21:46,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 102 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 84 case distinctions, treesize of input 903 treesize of output 758 [2022-11-20 21:21:47,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:47,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:21:47,513 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:47,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 123 [2022-11-20 21:21:47,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:47,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:21:47,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:21:48,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:21:48,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:48,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 123 [2022-11-20 21:21:48,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:21:48,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:21:49,239 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:21:49,241 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:21:54,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1772339360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:21:54,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:21:54,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-20 21:21:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713466028] [2022-11-20 21:21:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:21:54,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:21:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:21:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:21:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:21:54,840 INFO L87 Difference]: Start difference. First operand 378 states and 461 transitions. Second operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:22:06,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:22:06,818 INFO L93 Difference]: Finished difference Result 731 states and 933 transitions. [2022-11-20 21:22:06,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 21:22:06,818 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:22:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:22:06,822 INFO L225 Difference]: With dead ends: 731 [2022-11-20 21:22:06,822 INFO L226 Difference]: Without dead ends: 704 [2022-11-20 21:22:06,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=871, Invalid=3821, Unknown=0, NotChecked=0, Total=4692 [2022-11-20 21:22:06,825 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 653 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:22:06,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 203 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 21:22:06,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-20 21:22:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 468. [2022-11-20 21:22:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 405 states have (on average 1.2098765432098766) internal successors, (490), 426 states have internal predecessors, (490), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-20 21:22:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 570 transitions. [2022-11-20 21:22:06,891 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 570 transitions. Word has length 54 [2022-11-20 21:22:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:22:06,892 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 570 transitions. [2022-11-20 21:22:06,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:22:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 570 transitions. [2022-11-20 21:22:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:22:06,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:22:06,893 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:22:06,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:22:07,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:22:07,100 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:22:07,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:22:07,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1009207240, now seen corresponding path program 1 times [2022-11-20 21:22:07,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:22:07,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61417083] [2022-11-20 21:22:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:22:07,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:22:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:22:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:07,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:22:07,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61417083] [2022-11-20 21:22:07,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61417083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:22:07,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279159766] [2022-11-20 21:22:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:22:07,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:22:07,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:22:07,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:22:07,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 21:22:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:22:07,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:22:07,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:22:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:07,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:22:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:07,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279159766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:22:07,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1205904857] [2022-11-20 21:22:07,400 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:22:07,401 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:22:07,401 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:22:07,401 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:22:07,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:22:07,485 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:22:07,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:22:07,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:22:07,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:22:07,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 127 [2022-11-20 21:22:07,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 151 [2022-11-20 21:22:08,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 175 [2022-11-20 21:22:09,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,215 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:09,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:09,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:09,268 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:22:09,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 49 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 671 treesize of output 644 [2022-11-20 21:22:11,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:11,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-11-20 21:22:11,233 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:11,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 61 [2022-11-20 21:22:11,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:11,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:22:11,825 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:11,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 141 [2022-11-20 21:22:12,158 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:12,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 177 [2022-11-20 21:22:12,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:12,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:22:12,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:12,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 141 [2022-11-20 21:22:13,230 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:13,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 177 [2022-11-20 21:22:13,719 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:22:13,721 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:22:19,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1205904857] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:22:19,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:22:19,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-20 21:22:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101248399] [2022-11-20 21:22:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:22:19,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:22:19,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:22:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:22:19,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:22:19,453 INFO L87 Difference]: Start difference. First operand 468 states and 570 transitions. Second operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:22:30,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:22:30,994 INFO L93 Difference]: Finished difference Result 897 states and 1121 transitions. [2022-11-20 21:22:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 21:22:30,995 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:22:30,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:22:30,999 INFO L225 Difference]: With dead ends: 897 [2022-11-20 21:22:30,999 INFO L226 Difference]: Without dead ends: 870 [2022-11-20 21:22:31,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=850, Invalid=3706, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 21:22:31,002 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 431 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:22:31,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 131 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 21:22:31,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-20 21:22:31,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 494. [2022-11-20 21:22:31,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 429 states have (on average 1.2027972027972027) internal successors, (516), 450 states have internal predecessors, (516), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-20 21:22:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 600 transitions. [2022-11-20 21:22:31,085 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 600 transitions. Word has length 54 [2022-11-20 21:22:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:22:31,085 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 600 transitions. [2022-11-20 21:22:31,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:22:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 600 transitions. [2022-11-20 21:22:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:22:31,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:22:31,087 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:22:31,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 21:22:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:22:31,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:22:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:22:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash 657004974, now seen corresponding path program 1 times [2022-11-20 21:22:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:22:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204579381] [2022-11-20 21:22:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:22:31,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:22:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:22:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:31,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:22:31,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204579381] [2022-11-20 21:22:31,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204579381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:22:31,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407672211] [2022-11-20 21:22:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:22:31,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:22:31,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:22:31,389 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:22:31,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 21:22:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:22:31,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:22:31,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:22:31,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:31,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:22:31,579 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:31,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407672211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:22:31,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [213535678] [2022-11-20 21:22:31,581 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:22:31,582 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:22:31,582 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:22:31,582 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:22:31,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:22:31,653 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:22:31,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:22:31,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:22:31,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:22:32,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 127 [2022-11-20 21:22:32,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 151 [2022-11-20 21:22:32,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 32 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 175 [2022-11-20 21:22:33,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:33,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:33,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:33,644 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:22:33,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 49 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 692 treesize of output 653 [2022-11-20 21:22:35,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:35,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-11-20 21:22:35,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:35,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 61 [2022-11-20 21:22:35,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:35,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:22:36,136 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:36,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 141 [2022-11-20 21:22:36,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:36,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 177 [2022-11-20 21:22:36,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:36,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:22:37,172 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:37,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 141 [2022-11-20 21:22:37,539 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:37,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 307 treesize of output 177 [2022-11-20 21:22:38,034 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:22:38,036 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:22:44,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [213535678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:22:44,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:22:44,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-20 21:22:44,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347816505] [2022-11-20 21:22:44,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:22:44,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:22:44,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:22:44,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:22:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:22:44,066 INFO L87 Difference]: Start difference. First operand 494 states and 600 transitions. Second operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:22:55,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:22:55,555 INFO L93 Difference]: Finished difference Result 898 states and 1122 transitions. [2022-11-20 21:22:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 21:22:55,556 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:22:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:22:55,559 INFO L225 Difference]: With dead ends: 898 [2022-11-20 21:22:55,560 INFO L226 Difference]: Without dead ends: 871 [2022-11-20 21:22:55,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=865, Invalid=3557, Unknown=0, NotChecked=0, Total=4422 [2022-11-20 21:22:55,562 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 623 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:22:55,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 159 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 21:22:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-20 21:22:55,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 488. [2022-11-20 21:22:55,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 425 states have (on average 1.2) internal successors, (510), 446 states have internal predecessors, (510), 40 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-20 21:22:55,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 590 transitions. [2022-11-20 21:22:55,629 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 590 transitions. Word has length 54 [2022-11-20 21:22:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:22:55,630 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 590 transitions. [2022-11-20 21:22:55,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:22:55,630 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 590 transitions. [2022-11-20 21:22:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:22:55,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:22:55,631 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:22:55,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 21:22:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 21:22:55,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:22:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:22:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash -98491528, now seen corresponding path program 1 times [2022-11-20 21:22:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:22:55,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236915276] [2022-11-20 21:22:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:22:55,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:22:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:22:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:55,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:22:55,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236915276] [2022-11-20 21:22:55,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236915276] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:22:55,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718264175] [2022-11-20 21:22:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:22:55,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:22:55,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:22:55,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:22:56,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 21:22:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:22:56,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:22:56,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:22:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:56,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:22:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:22:56,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718264175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:22:56,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [860831435] [2022-11-20 21:22:56,151 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:22:56,151 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:22:56,153 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:22:56,153 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:22:56,153 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:22:56,235 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-20 21:22:56,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-20 21:22:56,297 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:22:56,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:22:56,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:22:56,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 118 [2022-11-20 21:22:56,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 133 [2022-11-20 21:22:57,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 157 [2022-11-20 21:22:57,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:57,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:22:57,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:22:57,507 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:22:57,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 639 treesize of output 632 [2022-11-20 21:22:58,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:58,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 90 [2022-11-20 21:22:58,834 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:58,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 126 [2022-11-20 21:22:59,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:59,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 21:22:59,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:59,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2022-11-20 21:22:59,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:59,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 67 [2022-11-20 21:22:59,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:22:59,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 21:22:59,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:59,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2022-11-20 21:22:59,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:22:59,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 67 [2022-11-20 21:22:59,946 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 45 for LOIs [2022-11-20 21:22:59,966 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:23:04,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [860831435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:23:04,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:04,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 38 [2022-11-20 21:23:04,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566530129] [2022-11-20 21:23:04,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:23:04,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 21:23:04,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:04,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 21:23:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1207, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 21:23:04,279 INFO L87 Difference]: Start difference. First operand 488 states and 590 transitions. Second operand has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:23:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:18,174 INFO L93 Difference]: Finished difference Result 830 states and 1051 transitions. [2022-11-20 21:23:18,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-20 21:23:18,174 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:23:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:18,180 INFO L225 Difference]: With dead ends: 830 [2022-11-20 21:23:18,181 INFO L226 Difference]: Without dead ends: 803 [2022-11-20 21:23:18,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 11 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=857, Invalid=3973, Unknown=0, NotChecked=0, Total=4830 [2022-11-20 21:23:18,183 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 528 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:18,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 204 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 21:23:18,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-20 21:23:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 601. [2022-11-20 21:23:18,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 527 states have (on average 1.1859582542694498) internal successors, (625), 548 states have internal predecessors, (625), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-20 21:23:18,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 727 transitions. [2022-11-20 21:23:18,295 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 727 transitions. Word has length 54 [2022-11-20 21:23:18,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:18,296 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 727 transitions. [2022-11-20 21:23:18,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:23:18,296 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 727 transitions. [2022-11-20 21:23:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:23:18,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:18,297 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:23:18,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 21:23:18,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:18,504 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:23:18,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:18,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1567720686, now seen corresponding path program 1 times [2022-11-20 21:23:18,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:18,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912390520] [2022-11-20 21:23:18,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:18,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:18,619 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:23:18,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:18,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912390520] [2022-11-20 21:23:18,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912390520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:18,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596107554] [2022-11-20 21:23:18,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:18,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:18,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:18,622 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:18,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 21:23:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:18,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:23:18,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:23:18,747 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:23:18,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:23:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:23:18,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596107554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:23:18,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1028878590] [2022-11-20 21:23:18,798 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:23:18,798 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:23:18,799 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:23:18,799 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:23:18,799 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:23:18,879 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:23:18,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:23:18,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:23:19,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:23:19,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 118 [2022-11-20 21:23:19,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 133 [2022-11-20 21:23:19,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 32 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 157 [2022-11-20 21:23:19,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:19,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:19,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:19,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:20,013 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:23:20,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 660 treesize of output 641 [2022-11-20 21:23:21,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:23:21,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 90 [2022-11-20 21:23:21,530 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:21,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 178 treesize of output 126 [2022-11-20 21:23:21,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:23:21,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 21:23:22,001 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:22,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2022-11-20 21:23:22,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:22,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 67 [2022-11-20 21:23:22,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:23:22,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 21:23:22,256 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:22,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 43 [2022-11-20 21:23:22,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:22,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 67 [2022-11-20 21:23:22,864 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 45 for LOIs [2022-11-20 21:23:22,876 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:23:27,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1028878590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:23:27,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:27,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 38 [2022-11-20 21:23:27,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304059827] [2022-11-20 21:23:27,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:23:27,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 21:23:27,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:27,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 21:23:27,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 21:23:27,600 INFO L87 Difference]: Start difference. First operand 601 states and 727 transitions. Second operand has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:23:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:23:42,262 INFO L93 Difference]: Finished difference Result 922 states and 1163 transitions. [2022-11-20 21:23:42,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-20 21:23:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:23:42,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:23:42,267 INFO L225 Difference]: With dead ends: 922 [2022-11-20 21:23:42,267 INFO L226 Difference]: Without dead ends: 895 [2022-11-20 21:23:42,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 117 SyntacticMatches, 11 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=717, Invalid=3975, Unknown=0, NotChecked=0, Total=4692 [2022-11-20 21:23:42,269 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 390 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 21:23:42,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 188 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 21:23:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-20 21:23:42,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 691. [2022-11-20 21:23:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 608 states have (on average 1.1776315789473684) internal successors, (716), 629 states have internal predecessors, (716), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 21:23:42,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 836 transitions. [2022-11-20 21:23:42,370 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 836 transitions. Word has length 54 [2022-11-20 21:23:42,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:23:42,371 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 836 transitions. [2022-11-20 21:23:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:23:42,371 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 836 transitions. [2022-11-20 21:23:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:23:42,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:23:42,372 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:23:42,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 21:23:42,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 21:23:42,578 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:23:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:23:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2063314066, now seen corresponding path program 1 times [2022-11-20 21:23:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:23:42,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848365725] [2022-11-20 21:23:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:42,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:23:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:23:42,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:23:42,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848365725] [2022-11-20 21:23:42,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848365725] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:23:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758808293] [2022-11-20 21:23:42,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:23:42,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:23:42,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:23:42,704 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:23:42,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 21:23:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:23:42,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:23:42,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:23:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:23:42,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:23:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:23:42,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758808293] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:23:42,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2138725138] [2022-11-20 21:23:42,859 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:23:42,860 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:23:42,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:23:42,860 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:23:42,860 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:23:42,938 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:23:42,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:23:42,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:23:43,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:23:43,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 118 [2022-11-20 21:23:43,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 142 [2022-11-20 21:23:43,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:23:44,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:44,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:23:44,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:23:44,076 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:23:44,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 660 treesize of output 641 [2022-11-20 21:23:45,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:23:45,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 108 [2022-11-20 21:23:45,512 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:45,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 144 [2022-11-20 21:23:45,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:23:46,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 87 [2022-11-20 21:23:46,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:46,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 123 [2022-11-20 21:23:46,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:46,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:23:46,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:23:47,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 87 [2022-11-20 21:23:47,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:47,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 123 [2022-11-20 21:23:47,641 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:23:47,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:23:48,240 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:23:48,241 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:23:53,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2138725138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:23:53,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:23:53,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 38 [2022-11-20 21:23:53,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410134982] [2022-11-20 21:23:53,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:23:53,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 21:23:53,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:23:53,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 21:23:53,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1207, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 21:23:53,922 INFO L87 Difference]: Start difference. First operand 691 states and 836 transitions. Second operand has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:24:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:24:05,873 INFO L93 Difference]: Finished difference Result 1088 states and 1351 transitions. [2022-11-20 21:24:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 21:24:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:24:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:24:05,879 INFO L225 Difference]: With dead ends: 1088 [2022-11-20 21:24:05,879 INFO L226 Difference]: Without dead ends: 1061 [2022-11-20 21:24:05,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 112 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=819, Invalid=3737, Unknown=0, NotChecked=0, Total=4556 [2022-11-20 21:24:05,887 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 590 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 1583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:24:05,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 173 Invalid, 1583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 21:24:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-20 21:24:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 695. [2022-11-20 21:24:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 612 states have (on average 1.1764705882352942) internal successors, (720), 633 states have internal predecessors, (720), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 21:24:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 840 transitions. [2022-11-20 21:24:06,007 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 840 transitions. Word has length 54 [2022-11-20 21:24:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:24:06,008 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 840 transitions. [2022-11-20 21:24:06,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:24:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 840 transitions. [2022-11-20 21:24:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-20 21:24:06,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:24:06,009 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:24:06,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 21:24:06,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 21:24:06,215 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:24:06,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:24:06,216 INFO L85 PathProgramCache]: Analyzing trace with hash -397101852, now seen corresponding path program 1 times [2022-11-20 21:24:06,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:24:06,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087122606] [2022-11-20 21:24:06,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:24:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:24:06,328 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:24:06,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087122606] [2022-11-20 21:24:06,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087122606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:24:06,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599413278] [2022-11-20 21:24:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:06,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:24:06,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:24:06,331 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:24:06,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 21:24:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:06,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:24:06,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:24:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:24:06,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:24:06,487 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 21:24:06,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599413278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:24:06,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [179281416] [2022-11-20 21:24:06,489 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-20 21:24:06,489 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:24:06,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:24:06,490 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:24:06,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:24:06,568 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:24:06,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:24:06,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2022-11-20 21:24:06,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:24:06,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 27 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 118 [2022-11-20 21:24:07,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 142 [2022-11-20 21:24:07,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 32 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:24:07,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:24:07,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,603 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 21:24:07,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 21:24:07,649 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-20 21:24:07,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 48 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 45 case distinctions, treesize of input 681 treesize of output 650 [2022-11-20 21:24:08,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:24:08,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 108 [2022-11-20 21:24:09,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:09,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 232 treesize of output 144 [2022-11-20 21:24:09,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:24:09,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 21:24:09,546 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:09,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-20 21:24:09,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:09,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 76 [2022-11-20 21:24:09,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:24:09,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-20 21:24:09,831 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:09,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-20 21:24:09,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:09,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 76 [2022-11-20 21:24:10,318 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 45 for LOIs [2022-11-20 21:24:10,328 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:24:14,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [179281416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:24:14,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:24:14,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-20 21:24:14,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483141630] [2022-11-20 21:24:14,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:24:14,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-20 21:24:14,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:24:14,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-20 21:24:14,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 21:24:14,636 INFO L87 Difference]: Start difference. First operand 695 states and 840 transitions. Second operand has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:24:28,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:24:28,469 INFO L93 Difference]: Finished difference Result 1042 states and 1280 transitions. [2022-11-20 21:24:28,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 21:24:28,470 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2022-11-20 21:24:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:24:28,472 INFO L225 Difference]: With dead ends: 1042 [2022-11-20 21:24:28,473 INFO L226 Difference]: Without dead ends: 1015 [2022-11-20 21:24:28,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 120 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1670 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=870, Invalid=4242, Unknown=0, NotChecked=0, Total=5112 [2022-11-20 21:24:28,475 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 654 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 1648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:24:28,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 163 Invalid, 1648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 21:24:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-11-20 21:24:28,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 635. [2022-11-20 21:24:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 558 states have (on average 1.1523297491039426) internal successors, (643), 579 states have internal predecessors, (643), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2022-11-20 21:24:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 751 transitions. [2022-11-20 21:24:28,603 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 751 transitions. Word has length 54 [2022-11-20 21:24:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:24:28,603 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 751 transitions. [2022-11-20 21:24:28,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 24 states have internal predecessors, (40), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:24:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 751 transitions. [2022-11-20 21:24:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 21:24:28,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:24:28,605 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:24:28,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 21:24:28,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 21:24:28,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:24:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:24:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash -586449087, now seen corresponding path program 1 times [2022-11-20 21:24:28,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:24:28,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403390330] [2022-11-20 21:24:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:24:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-20 21:24:28,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:24:28,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403390330] [2022-11-20 21:24:28,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403390330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:24:28,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:24:28,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:24:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194107451] [2022-11-20 21:24:28,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:24:28,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:24:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:24:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:24:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:24:28,912 INFO L87 Difference]: Start difference. First operand 635 states and 751 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:24:29,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:24:29,143 INFO L93 Difference]: Finished difference Result 635 states and 751 transitions. [2022-11-20 21:24:29,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:24:29,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-11-20 21:24:29,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:24:29,146 INFO L225 Difference]: With dead ends: 635 [2022-11-20 21:24:29,146 INFO L226 Difference]: Without dead ends: 618 [2022-11-20 21:24:29,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:24:29,150 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:24:29,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 63 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:24:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-20 21:24:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 575. [2022-11-20 21:24:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 518 states have (on average 1.1196911196911197) internal successors, (580), 522 states have internal predecessors, (580), 51 states have call successors, (51), 1 states have call predecessors, (51), 1 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-20 21:24:29,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 682 transitions. [2022-11-20 21:24:29,278 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 682 transitions. Word has length 87 [2022-11-20 21:24:29,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:24:29,279 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 682 transitions. [2022-11-20 21:24:29,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 21:24:29,279 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 682 transitions. [2022-11-20 21:24:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-20 21:24:29,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:24:29,281 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:24:29,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 21:24:29,281 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-20 21:24:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:24:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1837396335, now seen corresponding path program 1 times [2022-11-20 21:24:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:24:29,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514979240] [2022-11-20 21:24:29,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:29,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:24:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 21:24:29,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:24:29,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514979240] [2022-11-20 21:24:29,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514979240] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:24:29,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125253107] [2022-11-20 21:24:29,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:24:29,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:24:29,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:24:29,437 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:24:29,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 21:24:29,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:24:29,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 21:24:29,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:24:29,586 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 21:24:29,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:24:29,642 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-20 21:24:29,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125253107] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:24:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2029015968] [2022-11-20 21:24:29,643 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2022-11-20 21:24:29,644 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:24:29,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:24:29,644 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:24:29,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:24:29,722 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-20 21:24:29,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 46 [2022-11-20 21:24:29,775 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-20 21:24:29,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 53 [2022-11-20 21:24:29,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-20 21:24:30,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 127 [2022-11-20 21:24:30,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 29 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 142 [2022-11-20 21:24:30,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 32 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:24:30,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 31 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2022-11-20 21:24:30,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:24:31,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:24:31,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:31,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 123 [2022-11-20 21:24:31,593 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:31,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:24:31,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:31,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:24:31,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-20 21:24:32,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 105 [2022-11-20 21:24:32,276 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:32,276 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 175 treesize of output 123 [2022-11-20 21:24:32,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:32,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:24:32,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 21:24:32,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 253 treesize of output 159 [2022-11-20 21:24:33,310 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-20 21:24:33,312 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:24:40,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2029015968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:24:40,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:24:40,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [5, 5, 5] total 40 [2022-11-20 21:24:40,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707272684] [2022-11-20 21:24:40,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:24:40,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 21:24:40,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:24:40,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 21:24:40,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2022-11-20 21:24:40,804 INFO L87 Difference]: Start difference. First operand 575 states and 682 transitions. Second operand has 31 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:25:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:25:04,050 INFO L93 Difference]: Finished difference Result 924 states and 1112 transitions. [2022-11-20 21:25:04,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-20 21:25:04,050 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 96 [2022-11-20 21:25:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:25:04,051 INFO L225 Difference]: With dead ends: 924 [2022-11-20 21:25:04,051 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:25:04,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 222 SyntacticMatches, 30 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=915, Invalid=4635, Unknown=0, NotChecked=0, Total=5550 [2022-11-20 21:25:04,055 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 305 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 21:25:04,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 44 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 21:25:04,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:25:04,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:25:04,056 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) [2022-11-20 21:25:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:25:04,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2022-11-20 21:25:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:25:04,057 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:25:04,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.8) internal successors, (45), 25 states have internal predecessors, (45), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-20 21:25:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:25:04,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:25:04,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2022-11-20 21:25:04,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2022-11-20 21:25:04,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2022-11-20 21:25:04,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2022-11-20 21:25:04,060 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2022-11-20 21:25:04,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2022-11-20 21:25:04,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2022-11-20 21:25:04,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2022-11-20 21:25:04,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2022-11-20 21:25:04,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2022-11-20 21:25:04,061 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2022-11-20 21:25:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2022-11-20 21:25:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2022-11-20 21:25:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2022-11-20 21:25:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2022-11-20 21:25:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2022-11-20 21:25:04,062 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2022-11-20 21:25:04,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2022-11-20 21:25:04,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2022-11-20 21:25:04,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2022-11-20 21:25:04,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 38 remaining) [2022-11-20 21:25:04,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 38 remaining) [2022-11-20 21:25:04,063 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2022-11-20 21:25:04,064 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2022-11-20 21:25:04,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2022-11-20 21:25:04,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2022-11-20 21:25:04,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2022-11-20 21:25:04,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2022-11-20 21:25:04,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2022-11-20 21:25:04,065 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2022-11-20 21:25:04,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-20 21:25:04,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3deff6fa-25bb-4a93-80b0-3f952d49de38/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:25:04,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:26:50,170 WARN L233 SmtUtils]: Spent 1.70m on a formula simplification. DAG size of input: 331 DAG size of output: 308 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)