./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/pnr4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-b5237d8 [2022-11-22 00:06:41,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:06:41,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:06:41,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:06:41,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:06:41,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:06:41,138 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:06:41,140 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:06:41,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:06:41,142 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:06:41,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:06:41,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:06:41,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:06:41,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:06:41,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:06:41,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:06:41,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:06:41,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:06:41,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:06:41,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:06:41,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:06:41,158 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:06:41,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:06:41,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:06:41,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:06:41,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:06:41,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:06:41,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:06:41,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:06:41,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:06:41,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:06:41,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:06:41,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:06:41,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:06:41,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:06:41,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:06:41,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:06:41,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:06:41,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:06:41,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:06:41,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:06:41,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-22 00:06:41,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:06:41,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:06:41,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:06:41,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:06:41,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:06:41,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:06:41,200 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:06:41,200 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:06:41,201 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:06:41,201 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:06:41,201 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:06:41,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:06:41,202 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:06:41,202 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:06:41,202 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:06:41,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:06:41,203 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:06:41,203 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:06:41,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:06:41,204 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:06:41,204 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:06:41,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:06:41,205 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:06:41,205 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:06:41,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:06:41,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:06:41,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:06:41,206 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:06:41,206 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:06:41,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:06:41,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:06:41,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:06:41,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:06:41,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:06:41,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:06:41,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:06:41,209 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:06:41,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:06:41,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:06:41,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:06:41,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:06:41,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:06:41,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:06:41,211 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_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2f943c7ce97bf9be3e11b9d2df150d740ebe8f456342884d8ad0d40610fb008 [2022-11-22 00:06:41,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:06:41,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:06:41,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:06:41,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:06:41,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:06:41,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-tiling/pnr4.c [2022-11-22 00:06:44,595 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:06:44,789 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:06:44,789 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/sv-benchmarks/c/array-tiling/pnr4.c [2022-11-22 00:06:44,797 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/data/4a39975a6/f4d8099e09504177ae5abf35ea37f1be/FLAGd26d80eab [2022-11-22 00:06:44,818 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/data/4a39975a6/f4d8099e09504177ae5abf35ea37f1be [2022-11-22 00:06:44,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:06:44,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:06:44,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:06:44,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:06:44,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:06:44,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:06:44" (1/1) ... [2022-11-22 00:06:44,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff03766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:44, skipping insertion in model container [2022-11-22 00:06:44,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:06:44" (1/1) ... [2022-11-22 00:06:44,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:06:44,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:06:45,063 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_e34683fc-bc5d-4596-a18a-6c527b862f59/sv-benchmarks/c/array-tiling/pnr4.c[395,408] [2022-11-22 00:06:45,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:06:45,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:06:45,110 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_e34683fc-bc5d-4596-a18a-6c527b862f59/sv-benchmarks/c/array-tiling/pnr4.c[395,408] [2022-11-22 00:06:45,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:06:45,133 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:06:45,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45 WrapperNode [2022-11-22 00:06:45,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:06:45,134 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:06:45,135 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:06:45,135 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:06:45,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,173 INFO L138 Inliner]: procedures = 17, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2022-11-22 00:06:45,174 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:06:45,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:06:45,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:06:45,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:06:45,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,221 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:06:45,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:06:45,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:06:45,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:06:45,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (1/1) ... [2022-11-22 00:06:45,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:06:45,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:06:45,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:06:45,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:06:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:06:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:06:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:06:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:06:45,318 INFO L130 BoogieDeclarations]: Found specification of procedure ReadFromPort [2022-11-22 00:06:45,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ReadFromPort [2022-11-22 00:06:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:06:45,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:06:45,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:06:45,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:06:45,418 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:06:45,937 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:06:45,974 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:06:45,975 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 00:06:45,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:06:45 BoogieIcfgContainer [2022-11-22 00:06:45,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:06:45,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:06:45,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:06:45,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:06:45,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:06:44" (1/3) ... [2022-11-22 00:06:45,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d23b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:06:45, skipping insertion in model container [2022-11-22 00:06:45,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:06:45" (2/3) ... [2022-11-22 00:06:45,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d23b48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:06:45, skipping insertion in model container [2022-11-22 00:06:45,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:06:45" (3/3) ... [2022-11-22 00:06:45,988 INFO L112 eAbstractionObserver]: Analyzing ICFG pnr4.c [2022-11-22 00:06:46,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:06:46,016 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2022-11-22 00:06:46,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:06:46,076 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;@25cd36b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:06:46,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-22 00:06:46,081 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) [2022-11-22 00:06:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:06:46,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:46,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:06:46,090 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)] === [2022-11-22 00:06:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash 6328177, now seen corresponding path program 1 times [2022-11-22 00:06:46,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:46,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553615424] [2022-11-22 00:06:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:46,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:46,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:46,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:46,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553615424] [2022-11-22 00:06:46,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553615424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:46,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:46,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:06:46,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942719631] [2022-11-22 00:06:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:46,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:06:46,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:06:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:06:46,650 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) [2022-11-22 00:06:46,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:46,897 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2022-11-22 00:06:46,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:06:46,900 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 [2022-11-22 00:06:46,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:46,909 INFO L225 Difference]: With dead ends: 114 [2022-11-22 00:06:46,910 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 00:06:46,913 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 [2022-11-22 00:06:46,919 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 [2022-11-22 00:06:46,920 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] [2022-11-22 00:06:46,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 00:06:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-22 00:06:46,965 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) [2022-11-22 00:06:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2022-11-22 00:06:46,969 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 4 [2022-11-22 00:06:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:46,969 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2022-11-22 00:06:46,969 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) [2022-11-22 00:06:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2022-11-22 00:06:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:06:46,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:46,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:06:46,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:06:46,972 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)] === [2022-11-22 00:06:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 78049202, now seen corresponding path program 1 times [2022-11-22 00:06:46,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:46,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387745345] [2022-11-22 00:06:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:47,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:47,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:47,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387745345] [2022-11-22 00:06:47,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387745345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:47,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:47,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:06:47,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463303252] [2022-11-22 00:06:47,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:47,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:06:47,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:47,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:06:47,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:06:47,118 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) [2022-11-22 00:06:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:47,290 INFO L93 Difference]: Finished difference Result 100 states and 108 transitions. [2022-11-22 00:06:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:06:47,291 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 [2022-11-22 00:06:47,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:47,295 INFO L225 Difference]: With dead ends: 100 [2022-11-22 00:06:47,295 INFO L226 Difference]: Without dead ends: 98 [2022-11-22 00:06:47,304 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 [2022-11-22 00:06:47,307 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 [2022-11-22 00:06:47,308 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] [2022-11-22 00:06:47,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-22 00:06:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-22 00:06:47,326 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) [2022-11-22 00:06:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-11-22 00:06:47,328 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 9 [2022-11-22 00:06:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:47,329 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-11-22 00:06:47,329 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) [2022-11-22 00:06:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-11-22 00:06:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 00:06:47,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:47,330 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:06:47,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:06:47,331 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)] === [2022-11-22 00:06:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 30221846, now seen corresponding path program 1 times [2022-11-22 00:06:47,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:47,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900909287] [2022-11-22 00:06:47,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:47,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:47,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:47,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:47,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900909287] [2022-11-22 00:06:47,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900909287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:47,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:47,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:06:47,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663646338] [2022-11-22 00:06:47,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:47,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:06:47,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:06:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:06:47,472 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) [2022-11-22 00:06:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:47,686 INFO L93 Difference]: Finished difference Result 183 states and 200 transitions. [2022-11-22 00:06:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:06:47,687 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 [2022-11-22 00:06:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:47,693 INFO L225 Difference]: With dead ends: 183 [2022-11-22 00:06:47,693 INFO L226 Difference]: Without dead ends: 151 [2022-11-22 00:06:47,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:06:47,702 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 [2022-11-22 00:06:47,703 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] [2022-11-22 00:06:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-22 00:06:47,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 145. [2022-11-22 00:06:47,730 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) [2022-11-22 00:06:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-11-22 00:06:47,736 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 12 [2022-11-22 00:06:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-11-22 00:06:47,739 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) [2022-11-22 00:06:47,739 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-11-22 00:06:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 00:06:47,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:47,740 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:06:47,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:06:47,742 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)] === [2022-11-22 00:06:47,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1586658251, now seen corresponding path program 1 times [2022-11-22 00:06:47,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:47,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098454894] [2022-11-22 00:06:47,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:47,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:47,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:47,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098454894] [2022-11-22 00:06:47,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098454894] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:06:47,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770941828] [2022-11-22 00:06:47,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:47,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:06:47,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:06:47,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:06:47,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:06:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:48,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:06:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:06:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:48,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:06:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:06:48,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770941828] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:06:48,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [663424850] [2022-11-22 00:06:48,154 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-22 00:06:48,155 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:06:48,159 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:06:48,166 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:06:48,166 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:06:48,344 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-22 00:06:48,345 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 [2022-11-22 00:06:48,423 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:06:48,424 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 [2022-11-22 00:06:48,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:06:49,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [663424850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:49,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:06:49,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 15 [2022-11-22 00:06:49,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121598292] [2022-11-22 00:06:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:49,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:06:49,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:49,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:06:49,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-22 00:06:49,276 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) [2022-11-22 00:06:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:50,002 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2022-11-22 00:06:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:06:50,003 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 [2022-11-22 00:06:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:50,004 INFO L225 Difference]: With dead ends: 159 [2022-11-22 00:06:50,005 INFO L226 Difference]: Without dead ends: 150 [2022-11-22 00:06:50,005 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 [2022-11-22 00:06:50,006 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, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:06:50,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 59 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 00:06:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-22 00:06:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2022-11-22 00:06:50,061 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) [2022-11-22 00:06:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 161 transitions. [2022-11-22 00:06:50,063 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 161 transitions. Word has length 12 [2022-11-22 00:06:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:50,063 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 161 transitions. [2022-11-22 00:06:50,063 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) [2022-11-22 00:06:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 161 transitions. [2022-11-22 00:06:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-22 00:06:50,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:50,069 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] [2022-11-22 00:06:50,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:06:50,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:06:50,276 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)] === [2022-11-22 00:06:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:50,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1536187372, now seen corresponding path program 1 times [2022-11-22 00:06:50,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:50,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102285989] [2022-11-22 00:06:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:50,409 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 00:06:50,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:50,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102285989] [2022-11-22 00:06:50,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102285989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:06:50,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:06:50,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:06:50,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268105229] [2022-11-22 00:06:50,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:06:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:06:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:06:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:06:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:06:50,412 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) [2022-11-22 00:06:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:06:50,582 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2022-11-22 00:06:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:06:50,583 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 [2022-11-22 00:06:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:06:50,584 INFO L225 Difference]: With dead ends: 150 [2022-11-22 00:06:50,584 INFO L226 Difference]: Without dead ends: 148 [2022-11-22 00:06:50,585 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 [2022-11-22 00:06:50,586 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 [2022-11-22 00:06:50,586 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] [2022-11-22 00:06:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-11-22 00:06:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-11-22 00:06:50,626 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) [2022-11-22 00:06:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2022-11-22 00:06:50,627 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 44 [2022-11-22 00:06:50,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:06:50,628 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2022-11-22 00:06:50,628 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) [2022-11-22 00:06:50,628 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2022-11-22 00:06:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:06:50,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:06:50,632 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] [2022-11-22 00:06:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:06:50,633 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)] === [2022-11-22 00:06:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:06:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash -600821107, now seen corresponding path program 1 times [2022-11-22 00:06:50,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:06:50,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301342261] [2022-11-22 00:06:50,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:50,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:06:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:50,777 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:06:50,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:06:50,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301342261] [2022-11-22 00:06:50,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301342261] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:06:50,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95245202] [2022-11-22 00:06:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:06:50,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:06:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:06:50,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:06:50,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:06:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:06:50,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:06:50,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:06:50,984 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:06:50,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:06:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 00:06:51,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95245202] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:06:51,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1453644695] [2022-11-22 00:06:51,135 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-22 00:06:51,135 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:06:51,135 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:06:51,136 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:06:51,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:06:51,249 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:06:51,250 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 [2022-11-22 00:06:51,273 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 [2022-11-22 00:06:51,573 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 [2022-11-22 00:06:51,904 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 [2022-11-22 00:06:52,200 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 [2022-11-22 00:06:52,525 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 [2022-11-22 00:06:54,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:06:54,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:06:54,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:06:54,228 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:06:54,228 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 [2022-11-22 00:06:56,552 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 [2022-11-22 00:06:56,761 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 [2022-11-22 00:06:57,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:06:57,073 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 [2022-11-22 00:06:57,197 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 [2022-11-22 00:06:57,252 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 [2022-11-22 00:06:57,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:06:57,330 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 [2022-11-22 00:06:57,413 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:06:57,413 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 [2022-11-22 00:06:57,502 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 [2022-11-22 00:06:57,568 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 [2022-11-22 00:06:57,656 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:06:57,656 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 [2022-11-22 00:06:57,749 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:06:57,750 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 [2022-11-22 00:06:57,926 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:06:57,932 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:07:02,010 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 [2022-11-22 00:07:02,011 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:07:02,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:07:02,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-22 00:07:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77922875] [2022-11-22 00:07:02,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:07:02,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 00:07:02,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:02,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 00:07:02,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 00:07:02,015 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) [2022-11-22 00:07:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:02,451 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2022-11-22 00:07:02,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 00:07:02,452 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 [2022-11-22 00:07:02,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:02,454 INFO L225 Difference]: With dead ends: 212 [2022-11-22 00:07:02,454 INFO L226 Difference]: Without dead ends: 195 [2022-11-22 00:07:02,457 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 [2022-11-22 00:07:02,458 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:02,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 203 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:07:02,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-22 00:07:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2022-11-22 00:07:02,486 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) [2022-11-22 00:07:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 237 transitions. [2022-11-22 00:07:02,487 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 237 transitions. Word has length 54 [2022-11-22 00:07:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:02,488 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 237 transitions. [2022-11-22 00:07:02,488 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) [2022-11-22 00:07:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 237 transitions. [2022-11-22 00:07:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:07:02,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:02,490 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] [2022-11-22 00:07:02,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 00:07:02,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 00:07:02,696 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)] === [2022-11-22 00:07:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:02,696 INFO L85 PathProgramCache]: Analyzing trace with hash 955615298, now seen corresponding path program 1 times [2022-11-22 00:07:02,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:02,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752335842] [2022-11-22 00:07:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:02,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752335842] [2022-11-22 00:07:02,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752335842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:07:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550773818] [2022-11-22 00:07:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:02,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:07:02,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:07:02,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:07:02,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:07:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:02,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:07:02,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:07:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:02,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:07:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:03,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550773818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:07:03,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [484764590] [2022-11-22 00:07:03,028 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:07:03,028 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:07:03,028 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:07:03,029 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:07:03,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:07:03,107 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:07:03,108 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 [2022-11-22 00:07:03,119 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 [2022-11-22 00:07:03,304 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 [2022-11-22 00:07:03,516 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 [2022-11-22 00:07:03,724 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 [2022-11-22 00:07:03,938 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 [2022-11-22 00:07:05,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,207 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:07:05,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,216 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:07:05,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:05,269 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:07:05,270 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 [2022-11-22 00:07:07,074 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 [2022-11-22 00:07:07,275 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 [2022-11-22 00:07:07,577 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:07,577 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 [2022-11-22 00:07:07,710 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 [2022-11-22 00:07:07,774 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 [2022-11-22 00:07:07,840 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:07,840 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 [2022-11-22 00:07:07,915 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:07,915 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 [2022-11-22 00:07:07,989 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 [2022-11-22 00:07:08,061 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 [2022-11-22 00:07:08,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:08,146 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 [2022-11-22 00:07:08,234 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:08,234 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 [2022-11-22 00:07:08,730 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:07:08,732 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:07:13,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [484764590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:13,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:07:13,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-22 00:07:13,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520552383] [2022-11-22 00:07:13,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 00:07:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:13,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 00:07:13,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1305, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:07:13,300 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) [2022-11-22 00:07:27,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:27,014 INFO L93 Difference]: Finished difference Result 573 states and 743 transitions. [2022-11-22 00:07:27,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-22 00:07:27,019 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 [2022-11-22 00:07:27,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:27,027 INFO L225 Difference]: With dead ends: 573 [2022-11-22 00:07:27,028 INFO L226 Difference]: Without dead ends: 546 [2022-11-22 00:07:27,030 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 [2022-11-22 00:07:27,031 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, 2.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:07:27,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 166 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-22 00:07:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-22 00:07:27,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 378. [2022-11-22 00:07:27,084 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) [2022-11-22 00:07:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 461 transitions. [2022-11-22 00:07:27,086 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 461 transitions. Word has length 54 [2022-11-22 00:07:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:27,087 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 461 transitions. [2022-11-22 00:07:27,087 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) [2022-11-22 00:07:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 461 transitions. [2022-11-22 00:07:27,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:07:27,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:27,089 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] [2022-11-22 00:07:27,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:07:27,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 00:07:27,307 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)] === [2022-11-22 00:07:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1673139784, now seen corresponding path program 1 times [2022-11-22 00:07:27,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:27,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896855309] [2022-11-22 00:07:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:27,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:27,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896855309] [2022-11-22 00:07:27,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896855309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:07:27,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132514894] [2022-11-22 00:07:27,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:27,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:07:27,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:07:27,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:07:27,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:07:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:27,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:07:27,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:07:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:27,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:07:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:27,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132514894] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:07:27,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [995258514] [2022-11-22 00:07:27,635 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:07:27,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:07:27,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:07:27,636 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:07:27,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:07:27,711 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:07:27,712 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 [2022-11-22 00:07:27,730 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 [2022-11-22 00:07:27,929 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 [2022-11-22 00:07:28,094 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 [2022-11-22 00:07:28,297 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 [2022-11-22 00:07:28,506 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 [2022-11-22 00:07:29,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:29,790 INFO L321 Elim1Store]: treesize reduction 112, result has 11.8 percent of original size [2022-11-22 00:07:29,791 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 [2022-11-22 00:07:31,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:31,112 INFO L321 Elim1Store]: treesize reduction 113, result has 5.8 percent of original size [2022-11-22 00:07:31,113 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 [2022-11-22 00:07:32,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:32,358 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-22 00:07:32,358 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 [2022-11-22 00:07:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:33,924 INFO L321 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-22 00:07:33,924 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 [2022-11-22 00:07:34,451 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 [2022-11-22 00:07:34,665 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 [2022-11-22 00:07:34,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:34,950 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 [2022-11-22 00:07:35,224 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:35,224 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 [2022-11-22 00:07:35,420 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 [2022-11-22 00:07:35,611 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 [2022-11-22 00:07:35,843 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:35,843 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 [2022-11-22 00:07:36,207 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:36,208 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 [2022-11-22 00:07:36,695 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:07:36,697 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:07:42,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [995258514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:07:42,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:07:42,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-22 00:07:42,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751103763] [2022-11-22 00:07:42,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:07:42,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 00:07:42,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:07:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 00:07:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=1263, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:07:42,487 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) [2022-11-22 00:07:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:07:54,575 INFO L93 Difference]: Finished difference Result 731 states and 933 transitions. [2022-11-22 00:07:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 00:07:54,575 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 [2022-11-22 00:07:54,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:07:54,579 INFO L225 Difference]: With dead ends: 731 [2022-11-22 00:07:54,579 INFO L226 Difference]: Without dead ends: 704 [2022-11-22 00:07:54,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=871, Invalid=3821, Unknown=0, NotChecked=0, Total=4692 [2022-11-22 00:07:54,581 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 653 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s 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 [2022-11-22 00:07:54,582 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] [2022-11-22 00:07:54,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-22 00:07:54,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 468. [2022-11-22 00:07:54,640 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) [2022-11-22 00:07:54,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 570 transitions. [2022-11-22 00:07:54,643 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 570 transitions. Word has length 54 [2022-11-22 00:07:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:07:54,643 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 570 transitions. [2022-11-22 00:07:54,644 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) [2022-11-22 00:07:54,644 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 570 transitions. [2022-11-22 00:07:54,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:07:54,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:07:54,645 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] [2022-11-22 00:07:54,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:07:54,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:07:54,850 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)] === [2022-11-22 00:07:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:07:54,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1009207240, now seen corresponding path program 1 times [2022-11-22 00:07:54,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:07:54,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847073575] [2022-11-22 00:07:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:54,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:07:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:54,948 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:54,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:07:54,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847073575] [2022-11-22 00:07:54,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847073575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:07:54,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886110797] [2022-11-22 00:07:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:07:54,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:07:54,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:07:54,951 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:07:54,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:07:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:07:55,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:07:55,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:07:55,072 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:55,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:07:55,122 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:07:55,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886110797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:07:55,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [753025586] [2022-11-22 00:07:55,127 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:07:55,127 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:07:55,127 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:07:55,127 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:07:55,128 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:07:55,203 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:07:55,203 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 [2022-11-22 00:07:55,217 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 [2022-11-22 00:07:55,389 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 [2022-11-22 00:07:55,537 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 [2022-11-22 00:07:55,696 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 [2022-11-22 00:07:55,896 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 [2022-11-22 00:07:56,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:56,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:56,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:56,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:56,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,004 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:07:57,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:07:57,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:07:57,058 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:07:57,059 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 [2022-11-22 00:07:58,841 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 [2022-11-22 00:07:58,901 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 [2022-11-22 00:07:58,963 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:58,963 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 [2022-11-22 00:07:59,104 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 [2022-11-22 00:07:59,278 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 [2022-11-22 00:07:59,533 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:59,534 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 [2022-11-22 00:07:59,850 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:07:59,850 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 [2022-11-22 00:08:00,026 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 [2022-11-22 00:08:00,216 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 [2022-11-22 00:08:00,492 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:00,492 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 [2022-11-22 00:08:00,803 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:00,803 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 [2022-11-22 00:08:01,269 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:08:01,271 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:08:07,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [753025586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:07,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:08:07,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-22 00:08:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235562302] [2022-11-22 00:08:07,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:07,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 00:08:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:07,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 00:08:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1261, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:08:07,117 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) [2022-11-22 00:08:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:18,673 INFO L93 Difference]: Finished difference Result 897 states and 1121 transitions. [2022-11-22 00:08:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 00:08:18,674 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 [2022-11-22 00:08:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:18,678 INFO L225 Difference]: With dead ends: 897 [2022-11-22 00:08:18,678 INFO L226 Difference]: Without dead ends: 870 [2022-11-22 00:08:18,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=850, Invalid=3706, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 00:08:18,681 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, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:18,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 131 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:08:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-22 00:08:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 494. [2022-11-22 00:08:18,749 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) [2022-11-22 00:08:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 600 transitions. [2022-11-22 00:08:18,751 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 600 transitions. Word has length 54 [2022-11-22 00:08:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:18,752 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 600 transitions. [2022-11-22 00:08:18,752 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) [2022-11-22 00:08:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 600 transitions. [2022-11-22 00:08:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:08:18,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:18,754 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] [2022-11-22 00:08:18,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 00:08:18,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:08:18,960 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)] === [2022-11-22 00:08:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash 657004974, now seen corresponding path program 1 times [2022-11-22 00:08:18,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127932286] [2022-11-22 00:08:18,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:18,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:08:19,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:19,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127932286] [2022-11-22 00:08:19,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127932286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:08:19,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841130766] [2022-11-22 00:08:19,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:19,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:08:19,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:08:19,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:08:19,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:08:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:19,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:08:19,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:08:19,196 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:08:19,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:08:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:08:19,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841130766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:08:19,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1818235926] [2022-11-22 00:08:19,246 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:08:19,246 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:08:19,247 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:08:19,247 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:08:19,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:08:19,321 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:08:19,322 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 [2022-11-22 00:08:19,333 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 [2022-11-22 00:08:19,499 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 [2022-11-22 00:08:19,686 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 [2022-11-22 00:08:19,863 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 [2022-11-22 00:08:20,068 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 [2022-11-22 00:08:21,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,188 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:08:21,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,196 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:08:21,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:21,241 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:08:21,242 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 [2022-11-22 00:08:22,866 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 [2022-11-22 00:08:22,924 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 [2022-11-22 00:08:23,003 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:23,003 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 [2022-11-22 00:08:23,134 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 [2022-11-22 00:08:23,310 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 [2022-11-22 00:08:23,568 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:23,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 229 treesize of output 141 [2022-11-22 00:08:23,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:23,888 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 [2022-11-22 00:08:24,063 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 [2022-11-22 00:08:24,263 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 [2022-11-22 00:08:24,542 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:24,542 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 [2022-11-22 00:08:24,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:24,868 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 [2022-11-22 00:08:25,361 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:08:25,363 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:08:31,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1818235926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:31,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:08:31,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-22 00:08:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556637691] [2022-11-22 00:08:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:31,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 00:08:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 00:08:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:08:31,355 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) [2022-11-22 00:08:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:08:42,644 INFO L93 Difference]: Finished difference Result 898 states and 1122 transitions. [2022-11-22 00:08:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-22 00:08:42,645 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 [2022-11-22 00:08:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:08:42,648 INFO L225 Difference]: With dead ends: 898 [2022-11-22 00:08:42,648 INFO L226 Difference]: Without dead ends: 871 [2022-11-22 00:08:42,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 111 SyntacticMatches, 16 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1628 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=865, Invalid=3557, Unknown=0, NotChecked=0, Total=4422 [2022-11-22 00:08:42,650 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, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:08:42,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 159 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 00:08:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-22 00:08:42,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 488. [2022-11-22 00:08:42,720 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) [2022-11-22 00:08:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 590 transitions. [2022-11-22 00:08:42,722 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 590 transitions. Word has length 54 [2022-11-22 00:08:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:08:42,722 INFO L495 AbstractCegarLoop]: Abstraction has 488 states and 590 transitions. [2022-11-22 00:08:42,723 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) [2022-11-22 00:08:42,723 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 590 transitions. [2022-11-22 00:08:42,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:08:42,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:08:42,724 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] [2022-11-22 00:08:42,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:08:42,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:08:42,931 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)] === [2022-11-22 00:08:42,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:08:42,931 INFO L85 PathProgramCache]: Analyzing trace with hash -98491528, now seen corresponding path program 1 times [2022-11-22 00:08:42,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:08:42,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216588685] [2022-11-22 00:08:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:42,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:08:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:08:43,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:08:43,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216588685] [2022-11-22 00:08:43,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216588685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:08:43,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578555805] [2022-11-22 00:08:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:08:43,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:08:43,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:08:43,066 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:08:43,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:08:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:08:43,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:08:43,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:08:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:08:43,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:08:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:08:43,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578555805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:08:43,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [781548625] [2022-11-22 00:08:43,203 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:08:43,204 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:08:43,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:08:43,204 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:08:43,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:08:43,280 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-22 00:08:43,280 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 [2022-11-22 00:08:43,330 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:08:43,330 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 [2022-11-22 00:08:43,468 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 [2022-11-22 00:08:43,604 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 [2022-11-22 00:08:43,745 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 [2022-11-22 00:08:43,909 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 [2022-11-22 00:08:44,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:08:44,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:08:44,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:08:44,306 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:08:44,307 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 [2022-11-22 00:08:45,180 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 [2022-11-22 00:08:45,343 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 [2022-11-22 00:08:45,572 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:45,573 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 [2022-11-22 00:08:45,898 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 [2022-11-22 00:08:45,944 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 [2022-11-22 00:08:45,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:45,991 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 [2022-11-22 00:08:46,056 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:46,056 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 [2022-11-22 00:08:46,138 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 [2022-11-22 00:08:46,189 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 [2022-11-22 00:08:46,265 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:46,266 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 [2022-11-22 00:08:46,340 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:08:46,341 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 [2022-11-22 00:08:46,675 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 45 for LOIs [2022-11-22 00:08:46,694 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:08:50,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [781548625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:08:50,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:08:50,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 38 [2022-11-22 00:08:50,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187495434] [2022-11-22 00:08:50,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:08:50,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 00:08:50,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:08:50,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 00:08:50,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1207, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 00:08:50,843 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) [2022-11-22 00:09:04,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:04,501 INFO L93 Difference]: Finished difference Result 830 states and 1051 transitions. [2022-11-22 00:09:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-22 00:09:04,501 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 [2022-11-22 00:09:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:04,505 INFO L225 Difference]: With dead ends: 830 [2022-11-22 00:09:04,505 INFO L226 Difference]: Without dead ends: 803 [2022-11-22 00:09:04,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 117 SyntacticMatches, 11 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=857, Invalid=3973, Unknown=0, NotChecked=0, Total=4830 [2022-11-22 00:09:04,507 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 [2022-11-22 00:09:04,507 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] [2022-11-22 00:09:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2022-11-22 00:09:04,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 601. [2022-11-22 00:09:04,611 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) [2022-11-22 00:09:04,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 727 transitions. [2022-11-22 00:09:04,614 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 727 transitions. Word has length 54 [2022-11-22 00:09:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:04,615 INFO L495 AbstractCegarLoop]: Abstraction has 601 states and 727 transitions. [2022-11-22 00:09:04,615 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) [2022-11-22 00:09:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 727 transitions. [2022-11-22 00:09:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:09:04,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:04,616 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] [2022-11-22 00:09:04,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-22 00:09:04,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 00:09:04,822 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)] === [2022-11-22 00:09:04,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:04,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1567720686, now seen corresponding path program 1 times [2022-11-22 00:09:04,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:04,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181250728] [2022-11-22 00:09:04,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:04,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:04,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:04,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181250728] [2022-11-22 00:09:04,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181250728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:09:04,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983904672] [2022-11-22 00:09:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:04,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:09:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:09:04,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:09:04,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:09:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:05,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:09:05,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:09:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:05,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:09:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:05,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983904672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:09:05,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [298833294] [2022-11-22 00:09:05,074 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:09:05,074 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:09:05,075 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:09:05,075 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:09:05,075 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:09:05,148 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:09:05,148 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 [2022-11-22 00:09:05,160 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 [2022-11-22 00:09:05,350 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 [2022-11-22 00:09:05,527 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 [2022-11-22 00:09:05,715 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 [2022-11-22 00:09:05,893 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 [2022-11-22 00:09:06,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:06,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:06,294 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:09:06,295 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 [2022-11-22 00:09:07,246 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 [2022-11-22 00:09:07,386 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 [2022-11-22 00:09:07,603 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:07,604 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 [2022-11-22 00:09:07,942 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 [2022-11-22 00:09:07,981 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 [2022-11-22 00:09:08,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:08,031 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 [2022-11-22 00:09:08,083 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:08,083 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 [2022-11-22 00:09:08,167 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 [2022-11-22 00:09:08,232 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 [2022-11-22 00:09:08,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:08,311 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 [2022-11-22 00:09:08,402 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:08,402 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 [2022-11-22 00:09:08,882 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 45 for LOIs [2022-11-22 00:09:08,893 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:09:13,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [298833294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:13,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:09:13,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 38 [2022-11-22 00:09:13,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319248359] [2022-11-22 00:09:13,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:13,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 00:09:13,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:13,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 00:09:13,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1234, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 00:09:13,491 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) [2022-11-22 00:09:28,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:28,030 INFO L93 Difference]: Finished difference Result 922 states and 1163 transitions. [2022-11-22 00:09:28,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-22 00:09:28,030 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 [2022-11-22 00:09:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:28,033 INFO L225 Difference]: With dead ends: 922 [2022-11-22 00:09:28,033 INFO L226 Difference]: Without dead ends: 895 [2022-11-22 00:09:28,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 117 SyntacticMatches, 11 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1576 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=717, Invalid=3975, Unknown=0, NotChecked=0, Total=4692 [2022-11-22 00:09:28,035 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, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:09:28,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 188 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 00:09:28,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-22 00:09:28,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 691. [2022-11-22 00:09:28,155 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) [2022-11-22 00:09:28,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 836 transitions. [2022-11-22 00:09:28,157 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 836 transitions. Word has length 54 [2022-11-22 00:09:28,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:28,158 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 836 transitions. [2022-11-22 00:09:28,158 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) [2022-11-22 00:09:28,158 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 836 transitions. [2022-11-22 00:09:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:09:28,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:28,159 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] [2022-11-22 00:09:28,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-22 00:09:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:09:28,370 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)] === [2022-11-22 00:09:28,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:28,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2063314066, now seen corresponding path program 1 times [2022-11-22 00:09:28,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:28,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55237920] [2022-11-22 00:09:28,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:28,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:28,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55237920] [2022-11-22 00:09:28,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55237920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:09:28,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597867864] [2022-11-22 00:09:28,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:28,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:09:28,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:09:28,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:09:28,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:09:28,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:28,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:09:28,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:09:28,598 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:28,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:09:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:28,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597867864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:09:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1714442635] [2022-11-22 00:09:28,646 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:09:28,647 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:09:28,647 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:09:28,647 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:09:28,648 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:09:28,720 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:09:28,722 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 [2022-11-22 00:09:28,736 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 [2022-11-22 00:09:28,905 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 [2022-11-22 00:09:29,078 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 [2022-11-22 00:09:29,268 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 [2022-11-22 00:09:29,440 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 [2022-11-22 00:09:29,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,736 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:29,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:29,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:29,787 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:09:29,787 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 [2022-11-22 00:09:30,750 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 [2022-11-22 00:09:30,939 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 [2022-11-22 00:09:31,191 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:31,192 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 [2022-11-22 00:09:31,505 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 [2022-11-22 00:09:31,658 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 [2022-11-22 00:09:31,892 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:31,892 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 [2022-11-22 00:09:32,149 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:32,150 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 [2022-11-22 00:09:32,496 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 [2022-11-22 00:09:32,685 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 [2022-11-22 00:09:32,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:32,968 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 [2022-11-22 00:09:33,268 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:33,269 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 [2022-11-22 00:09:33,817 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:09:33,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:09:39,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1714442635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:39,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:09:39,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [5, 5, 5] total 38 [2022-11-22 00:09:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424281546] [2022-11-22 00:09:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-22 00:09:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-22 00:09:39,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1207, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 00:09:39,330 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) [2022-11-22 00:09:51,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:09:51,295 INFO L93 Difference]: Finished difference Result 1088 states and 1351 transitions. [2022-11-22 00:09:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-22 00:09:51,296 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 [2022-11-22 00:09:51,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:09:51,300 INFO L225 Difference]: With dead ends: 1088 [2022-11-22 00:09:51,300 INFO L226 Difference]: Without dead ends: 1061 [2022-11-22 00:09:51,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 112 SyntacticMatches, 16 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=819, Invalid=3737, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 00:09:51,302 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 [2022-11-22 00:09:51,303 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] [2022-11-22 00:09:51,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-22 00:09:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 695. [2022-11-22 00:09:51,404 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) [2022-11-22 00:09:51,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 840 transitions. [2022-11-22 00:09:51,407 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 840 transitions. Word has length 54 [2022-11-22 00:09:51,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:09:51,407 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 840 transitions. [2022-11-22 00:09:51,407 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) [2022-11-22 00:09:51,408 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 840 transitions. [2022-11-22 00:09:51,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 00:09:51,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:09:51,409 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] [2022-11-22 00:09:51,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:09:51,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:09:51,615 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)] === [2022-11-22 00:09:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:09:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -397101852, now seen corresponding path program 1 times [2022-11-22 00:09:51,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:09:51,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119486402] [2022-11-22 00:09:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:51,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:09:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:51,706 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:51,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:09:51,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119486402] [2022-11-22 00:09:51,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119486402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:09:51,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518816280] [2022-11-22 00:09:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:09:51,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:09:51,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:09:51,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:09:51,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:09:51,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:09:51,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:09:51,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:09:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:51,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:09:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 00:09:51,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518816280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:09:51,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [488735982] [2022-11-22 00:09:51,860 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-22 00:09:51,861 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:09:51,861 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:09:51,861 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:09:51,861 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:09:51,948 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:09:51,948 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 [2022-11-22 00:09:51,960 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 [2022-11-22 00:09:52,116 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 [2022-11-22 00:09:52,250 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 [2022-11-22 00:09:52,385 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 [2022-11-22 00:09:52,553 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 [2022-11-22 00:09:52,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,879 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:52,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,891 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:09:52,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:09:52,938 INFO L321 Elim1Store]: treesize reduction 102, result has 21.5 percent of original size [2022-11-22 00:09:52,938 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 [2022-11-22 00:09:53,877 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 [2022-11-22 00:09:54,078 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 [2022-11-22 00:09:54,344 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:54,344 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 [2022-11-22 00:09:54,699 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 [2022-11-22 00:09:54,738 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 [2022-11-22 00:09:54,785 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:54,786 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 [2022-11-22 00:09:54,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:54,855 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 [2022-11-22 00:09:54,947 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 [2022-11-22 00:09:55,015 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 [2022-11-22 00:09:55,079 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:55,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 52 [2022-11-22 00:09:55,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:09:55,156 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 [2022-11-22 00:09:55,500 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 45 for LOIs [2022-11-22 00:09:55,512 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:09:59,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [488735982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:09:59,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:09:59,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [5, 5, 5] total 39 [2022-11-22 00:09:59,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271796607] [2022-11-22 00:09:59,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:09:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-22 00:09:59,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:09:59,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-22 00:09:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1279, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 00:09:59,842 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) [2022-11-22 00:10:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:13,622 INFO L93 Difference]: Finished difference Result 1042 states and 1280 transitions. [2022-11-22 00:10:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-22 00:10:13,622 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 [2022-11-22 00:10:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:13,625 INFO L225 Difference]: With dead ends: 1042 [2022-11-22 00:10:13,625 INFO L226 Difference]: Without dead ends: 1015 [2022-11-22 00:10:13,627 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 [2022-11-22 00:10:13,628 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 [2022-11-22 00:10:13,628 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] [2022-11-22 00:10:13,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-11-22 00:10:13,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 635. [2022-11-22 00:10:13,742 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) [2022-11-22 00:10:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 751 transitions. [2022-11-22 00:10:13,746 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 751 transitions. Word has length 54 [2022-11-22 00:10:13,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:13,746 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 751 transitions. [2022-11-22 00:10:13,746 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) [2022-11-22 00:10:13,746 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 751 transitions. [2022-11-22 00:10:13,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 00:10:13,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:13,754 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] [2022-11-22 00:10:13,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 00:10:13,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 00:10:13,965 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)] === [2022-11-22 00:10:13,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -586449087, now seen corresponding path program 1 times [2022-11-22 00:10:13,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:13,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086138754] [2022-11-22 00:10:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:13,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 00:10:14,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:14,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086138754] [2022-11-22 00:10:14,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086138754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:14,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:10:14,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:10:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397323456] [2022-11-22 00:10:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:14,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:10:14,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:10:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:10:14,056 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) [2022-11-22 00:10:14,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:14,264 INFO L93 Difference]: Finished difference Result 635 states and 751 transitions. [2022-11-22 00:10:14,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:10:14,265 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 [2022-11-22 00:10:14,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:14,267 INFO L225 Difference]: With dead ends: 635 [2022-11-22 00:10:14,267 INFO L226 Difference]: Without dead ends: 618 [2022-11-22 00:10:14,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:10:14,270 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 [2022-11-22 00:10:14,271 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] [2022-11-22 00:10:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-22 00:10:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 575. [2022-11-22 00:10:14,398 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) [2022-11-22 00:10:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 682 transitions. [2022-11-22 00:10:14,400 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 682 transitions. Word has length 87 [2022-11-22 00:10:14,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:14,401 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 682 transitions. [2022-11-22 00:10:14,401 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) [2022-11-22 00:10:14,401 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 682 transitions. [2022-11-22 00:10:14,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 00:10:14,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:10:14,404 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] [2022-11-22 00:10:14,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 00:10:14,405 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)] === [2022-11-22 00:10:14,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:10:14,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1837396335, now seen corresponding path program 1 times [2022-11-22 00:10:14,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:10:14,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835522753] [2022-11-22 00:10:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:14,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:10:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:14,546 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-22 00:10:14,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:10:14,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835522753] [2022-11-22 00:10:14,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835522753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:10:14,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348123412] [2022-11-22 00:10:14,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:10:14,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:10:14,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:10:14,548 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:10:14,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:10:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:10:14,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:10:14,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:10:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-22 00:10:14,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:10:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-22 00:10:14,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348123412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:10:14,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [157292804] [2022-11-22 00:10:14,749 INFO L159 IcfgInterpreter]: Started Sifa with 48 locations of interest [2022-11-22 00:10:14,749 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:10:14,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:10:14,749 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:10:14,749 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:10:14,826 INFO L321 Elim1Store]: treesize reduction 42, result has 40.0 percent of original size [2022-11-22 00:10:14,826 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 [2022-11-22 00:10:14,884 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-22 00:10:14,885 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 [2022-11-22 00:10:15,058 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 [2022-11-22 00:10:15,204 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 [2022-11-22 00:10:15,370 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 [2022-11-22 00:10:15,562 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 [2022-11-22 00:10:15,629 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 [2022-11-22 00:10:16,029 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 [2022-11-22 00:10:16,207 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 [2022-11-22 00:10:16,440 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:16,440 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 [2022-11-22 00:10:16,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:16,752 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 [2022-11-22 00:10:16,816 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:16,817 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 [2022-11-22 00:10:16,977 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 [2022-11-22 00:10:17,184 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 [2022-11-22 00:10:17,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:17,420 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 [2022-11-22 00:10:17,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:17,751 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 [2022-11-22 00:10:17,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:10:17,830 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 [2022-11-22 00:10:18,338 INFO L197 IcfgInterpreter]: Interpreting procedure ReadFromPort with input of size 15 for LOIs [2022-11-22 00:10:18,340 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:10:25,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [157292804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:10:25,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:10:25,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [5, 5, 5] total 40 [2022-11-22 00:10:25,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553117310] [2022-11-22 00:10:25,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:10:25,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 00:10:25,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:10:25,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 00:10:25,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 00:10:25,686 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) [2022-11-22 00:10:48,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:10:48,276 INFO L93 Difference]: Finished difference Result 924 states and 1112 transitions. [2022-11-22 00:10:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-22 00:10:48,277 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 [2022-11-22 00:10:48,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:10:48,277 INFO L225 Difference]: With dead ends: 924 [2022-11-22 00:10:48,277 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 00:10:48,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 222 SyntacticMatches, 30 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2264 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=915, Invalid=4635, Unknown=0, NotChecked=0, Total=5550 [2022-11-22 00:10:48,281 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 305 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:10:48,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 44 Invalid, 1700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 00:10:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 00:10:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 00:10:48,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:10:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 00:10:48,283 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 96 [2022-11-22 00:10:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:10:48,283 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 00:10:48,283 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) [2022-11-22 00:10:48,284 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 00:10:48,284 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 00:10:48,286 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2022-11-22 00:10:48,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2022-11-22 00:10:48,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2022-11-22 00:10:48,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2022-11-22 00:10:48,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2022-11-22 00:10:48,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2022-11-22 00:10:48,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2022-11-22 00:10:48,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2022-11-22 00:10:48,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2022-11-22 00:10:48,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2022-11-22 00:10:48,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2022-11-22 00:10:48,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2022-11-22 00:10:48,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2022-11-22 00:10:48,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2022-11-22 00:10:48,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2022-11-22 00:10:48,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2022-11-22 00:10:48,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2022-11-22 00:10:48,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2022-11-22 00:10:48,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2022-11-22 00:10:48,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2022-11-22 00:10:48,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 38 remaining) [2022-11-22 00:10:48,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 38 remaining) [2022-11-22 00:10:48,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2022-11-22 00:10:48,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2022-11-22 00:10:48,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2022-11-22 00:10:48,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2022-11-22 00:10:48,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2022-11-22 00:10:48,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2022-11-22 00:10:48,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2022-11-22 00:10:48,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2022-11-22 00:10:48,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2022-11-22 00:10:48,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2022-11-22 00:10:48,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2022-11-22 00:10:48,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2022-11-22 00:10:48,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2022-11-22 00:10:48,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2022-11-22 00:10:48,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2022-11-22 00:10:48,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2022-11-22 00:10:48,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-22 00:10:48,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e34683fc-bc5d-4596-a18a-6c527b862f59/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:10:48,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 00:12:39,064 WARN L233 SmtUtils]: Spent 1.78m 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)