./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8 --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 6e3d50e5c95506905bfc503f1fcedc0356db6a24 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:08:30,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:08:30,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:08:30,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:08:30,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:08:30,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:08:30,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:08:30,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:08:30,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:08:30,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:08:30,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:08:30,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:08:30,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:08:30,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:08:30,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:08:30,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:08:30,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:08:30,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:08:30,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:08:30,154 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:08:30,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:08:30,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:08:30,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:08:30,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:08:30,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:08:30,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:08:30,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:08:30,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:08:30,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:08:30,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:08:30,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:08:30,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:08:30,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:08:30,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:08:30,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:08:30,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:08:30,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:08:30,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:08:30,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:08:30,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:08:30,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:08:30,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:08:30,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:08:30,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:08:30,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:08:30,230 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:08:30,230 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:08:30,230 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:08:30,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:08:30,231 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:08:30,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:08:30,231 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:08:30,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:08:30,231 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:08:30,232 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:08:30,232 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:08:30,232 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:08:30,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:08:30,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:08:30,233 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:08:30,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:08:30,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:08:30,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:08:30,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:08:30,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:08:30,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:08:30,235 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:08:30,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:08:30,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:08:30,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:08:30,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:08:30,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:08:30,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:08:30,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:08:30,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:08:30,237 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:08:30,237 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:08:30,237 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:08:30,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:08:30,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:08:30,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:08:30,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:08:30,239 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e3d50e5c95506905bfc503f1fcedc0356db6a24 [2021-10-13 07:08:30,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:08:30,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:08:30,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:08:30,536 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:08:30,537 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:08:30,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-10-13 07:08:30,643 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/data/cd443513a/201863c3d4364b10a7fa8a66df1a4323/FLAG0abadf4a4 [2021-10-13 07:08:31,163 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:08:31,164 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i [2021-10-13 07:08:31,178 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/data/cd443513a/201863c3d4364b10a7fa8a66df1a4323/FLAG0abadf4a4 [2021-10-13 07:08:31,501 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/data/cd443513a/201863c3d4364b10a7fa8a66df1a4323 [2021-10-13 07:08:31,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:08:31,506 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:08:31,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:08:31,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:08:31,516 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:08:31,517 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b1ca7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31, skipping insertion in model container [2021-10-13 07:08:31,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:08:31,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:08:31,748 WARN L228 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_bd792493-e041-4460-ae65-ae4eb9f913eb/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-10-13 07:08:31,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:08:31,774 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:08:31,807 WARN L228 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_bd792493-e041-4460-ae65-ae4eb9f913eb/sv-benchmarks/c/loop-zilu/benchmark04_conjunctive.i[873,886] [2021-10-13 07:08:31,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:08:31,847 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:08:31,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31 WrapperNode [2021-10-13 07:08:31,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:08:31,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:08:31,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:08:31,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:08:31,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:08:31,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:08:31,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:08:31,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:08:31,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,948 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:08:31,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:08:31,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:08:31,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:08:31,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (1/1) ... [2021-10-13 07:08:31,973 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:08:31,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:08:32,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:08:32,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:08:32,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:08:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:08:32,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:08:32,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:08:32,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:08:32,360 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:08:32,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:32 BoogieIcfgContainer [2021-10-13 07:08:32,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:08:32,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:08:32,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:08:32,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:08:32,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:08:31" (1/3) ... [2021-10-13 07:08:32,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ddfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:32, skipping insertion in model container [2021-10-13 07:08:32,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:08:31" (2/3) ... [2021-10-13 07:08:32,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e5ddfd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:08:32, skipping insertion in model container [2021-10-13 07:08:32,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:08:32" (3/3) ... [2021-10-13 07:08:32,379 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark04_conjunctive.i [2021-10-13 07:08:32,385 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:08:32,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:08:32,474 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:08:32,489 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:08:32,489 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:08:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:32,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:08:32,511 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:32,512 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:08:32,512 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 71343, now seen corresponding path program 1 times [2021-10-13 07:08:32,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:32,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594058737] [2021-10-13 07:08:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:32,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:32,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:32,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594058737] [2021-10-13 07:08:32,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594058737] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:32,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:32,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-13 07:08:32,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406956156] [2021-10-13 07:08:32,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:08:32,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:08:32,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:08:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:08:32,735 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:32,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:32,771 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-10-13 07:08:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:08:32,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 07:08:32,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:32,783 INFO L225 Difference]: With dead ends: 21 [2021-10-13 07:08:32,783 INFO L226 Difference]: Without dead ends: 14 [2021-10-13 07:08:32,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:08:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-13 07:08:32,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-13 07:08:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-13 07:08:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-13 07:08:32,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 3 [2021-10-13 07:08:32,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:32,824 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-13 07:08:32,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:32,825 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-13 07:08:32,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:08:32,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:32,826 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:08:32,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:08:32,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:32,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:32,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2211678, now seen corresponding path program 1 times [2021-10-13 07:08:32,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:32,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113013586] [2021-10-13 07:08:32,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:32,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:32,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:32,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113013586] [2021-10-13 07:08:32,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113013586] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:32,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:32,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:08:32,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553120237] [2021-10-13 07:08:32,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:08:32,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:08:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:08:32,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:08:32,881 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-10-13 07:08:32,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:32,904 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-13 07:08:32,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:08:32,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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 [2021-10-13 07:08:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:32,906 INFO L225 Difference]: With dead ends: 14 [2021-10-13 07:08:32,906 INFO L226 Difference]: Without dead ends: 13 [2021-10-13 07:08:32,907 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:08:32,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-13 07:08:32,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 07:08:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 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) [2021-10-13 07:08:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-13 07:08:32,913 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-13 07:08:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:32,914 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-13 07:08:32,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2021-10-13 07:08:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-13 07:08:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:08:32,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:32,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:08:32,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:08:32,917 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:32,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2125424160, now seen corresponding path program 1 times [2021-10-13 07:08:32,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:32,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049225534] [2021-10-13 07:08:32,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:32,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:33,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049225534] [2021-10-13 07:08:33,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049225534] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:33,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:33,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:08:33,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676448886] [2021-10-13 07:08:33,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:08:33,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:08:33,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:08:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:33,051 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:33,116 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-13 07:08:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 07:08:33,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:08:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:33,119 INFO L225 Difference]: With dead ends: 20 [2021-10-13 07:08:33,119 INFO L226 Difference]: Without dead ends: 19 [2021-10-13 07:08:33,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:08:33,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-13 07:08:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-10-13 07:08:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-13 07:08:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 07:08:33,130 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-10-13 07:08:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:33,130 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 07:08:33,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 07:08:33,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:08:33,131 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:33,132 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:33,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:08:33,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:33,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1463639574, now seen corresponding path program 1 times [2021-10-13 07:08:33,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:33,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037216532] [2021-10-13 07:08:33,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:33,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,219 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:33,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037216532] [2021-10-13 07:08:33,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037216532] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:33,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:33,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:08:33,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882865401] [2021-10-13 07:08:33,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:08:33,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:08:33,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:08:33,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:33,231 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:33,261 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-13 07:08:33,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:08:33,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:08:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:33,265 INFO L225 Difference]: With dead ends: 17 [2021-10-13 07:08:33,265 INFO L226 Difference]: Without dead ends: 16 [2021-10-13 07:08:33,266 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:08:33,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-13 07:08:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-13 07:08:33,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 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) [2021-10-13 07:08:33,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-13 07:08:33,272 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-10-13 07:08:33,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:33,273 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-13 07:08:33,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-13 07:08:33,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:08:33,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:33,277 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:33,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:08:33,278 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:33,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:33,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1871813406, now seen corresponding path program 1 times [2021-10-13 07:08:33,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:33,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213127716] [2021-10-13 07:08:33,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:33,281 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:33,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213127716] [2021-10-13 07:08:33,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213127716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:33,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:33,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:08:33,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860324571] [2021-10-13 07:08:33,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:08:33,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:08:33,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:08:33,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:33,370 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:33,412 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-13 07:08:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:08:33,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:08:33,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:33,414 INFO L225 Difference]: With dead ends: 16 [2021-10-13 07:08:33,414 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 07:08:33,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:08:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 07:08:33,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 07:08:33,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-13 07:08:33,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-10-13 07:08:33,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:33,435 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-13 07:08:33,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:08:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-13 07:08:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 07:08:33,436 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:33,436 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:33,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:08:33,437 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:33,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:33,438 INFO L82 PathProgramCache]: Analyzing trace with hash 2103326616, now seen corresponding path program 1 times [2021-10-13 07:08:33,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:33,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749969200] [2021-10-13 07:08:33,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:33,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:33,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:33,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749969200] [2021-10-13 07:08:33,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749969200] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:08:33,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:08:33,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:08:33,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842386352] [2021-10-13 07:08:33,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:08:33,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:08:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:08:33,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:08:33,509 INFO L87 Difference]: Start difference. First operand 15 states and 15 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) [2021-10-13 07:08:33,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:08:33,546 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-13 07:08:33,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:08:33,547 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 [2021-10-13 07:08:33,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:08:33,547 INFO L225 Difference]: With dead ends: 19 [2021-10-13 07:08:33,548 INFO L226 Difference]: Without dead ends: 18 [2021-10-13 07:08:33,549 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:08:33,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-13 07:08:33,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-13 07:08:33,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 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) [2021-10-13 07:08:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-13 07:08:33,555 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-10-13 07:08:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:08:33,555 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-13 07:08:33,555 INFO L471 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) [2021-10-13 07:08:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-13 07:08:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-13 07:08:33,556 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:08:33,556 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:08:33,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:08:33,557 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:08:33,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:08:33,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1378031940, now seen corresponding path program 1 times [2021-10-13 07:08:33,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:08:33,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606809454] [2021-10-13 07:08:33,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:33,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:08:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:33,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:08:33,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606809454] [2021-10-13 07:08:33,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606809454] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:08:33,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561063800] [2021-10-13 07:08:33,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:08:33,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:08:33,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:08:33,622 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:08:33,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:08:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:08:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:08:33,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:08:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:08:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:08:33,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561063800] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:08:33,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [838440637] [2021-10-13 07:08:34,002 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-13 07:08:34,002 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:08:34,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:08:34,027 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:08:34,028 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:08:34,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,079 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:08:34,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,080 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 07:08:34,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:08:34,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,087 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:08:34,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-13 07:08:34,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:08:34,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:08:34,185 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 07:08:34,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 07:08:34,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,194 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:08:34,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:08:34,202 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:08:34,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:08:34,235 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:08:34,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 98 [2021-10-13 07:08:34,242 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:08:34,242 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:110, output treesize:98 [2021-10-13 07:08:34,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:08:34,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:08:34,462 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:08:34,465 INFO L168 Benchmark]: Toolchain (without parser) took 2958.97 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 59.6 MB in the beginning and 109.6 MB in the end (delta: -50.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:34,466 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:34,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.27 ms. Allocated memory is still 100.7 MB. Free memory was 59.5 MB in the beginning and 75.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:34,467 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.93 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:34,468 INFO L168 Benchmark]: Boogie Preprocessor took 53.97 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 72.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:08:34,468 INFO L168 Benchmark]: RCFGBuilder took 404.99 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 61.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:34,469 INFO L168 Benchmark]: TraceAbstraction took 2099.30 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 61.2 MB in the beginning and 109.6 MB in the end (delta: -48.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:08:34,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 100.7 MB. Free memory is still 76.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.27 ms. Allocated memory is still 100.7 MB. Free memory was 59.5 MB in the beginning and 75.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.93 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 73.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.97 ms. Allocated memory is still 100.7 MB. Free memory was 73.7 MB in the beginning and 72.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 404.99 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 61.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2099.30 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 61.2 MB in the beginning and 109.6 MB in the end (delta: -48.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:08:34,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd792493-e041-4460-ae65-ae4eb9f913eb/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...