./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7 --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 64bit --witnessprinter.graph.data.programhash cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:44:39,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:44:39,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:44:39,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:44:39,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:44:39,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:44:39,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:44:39,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:44:39,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:44:39,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:44:39,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:44:39,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:44:39,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:44:39,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:44:39,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:44:39,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:44:39,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:44:39,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:44:39,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:44:39,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:44:39,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:44:39,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:44:39,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:44:39,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:44:39,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:44:39,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:44:39,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:44:39,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:44:39,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:44:39,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:44:39,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:44:39,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:44:39,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:44:39,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:44:39,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:44:39,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:44:39,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:44:39,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:44:39,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:44:39,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:44:39,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:44:39,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 17:44:39,425 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:44:39,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:44:39,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:44:39,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:44:39,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:44:39,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:44:39,427 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:44:39,427 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:44:39,428 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:44:39,428 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:44:39,428 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:44:39,428 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:44:39,429 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:44:39,429 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:44:39,429 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:44:39,430 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:44:39,430 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:44:39,430 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:44:39,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:44:39,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 17:44:39,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:44:39,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:44:39,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:44:39,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:44:39,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:44:39,433 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 17:44:39,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:44:39,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:44:39,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:44:39,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:44:39,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:44:39,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:44:39,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:44:39,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:44:39,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:44:39,435 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:44:39,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:44:39,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:44:39,436 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:44:39,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:44:39,437 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_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cad2c6f6e8ebe2adcd550e4a56b83be37e52f812ae33bfb645236c6925734dbf [2021-11-25 17:44:39,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:44:39,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:44:39,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:44:39,726 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:44:39,727 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:44:39,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-11-25 17:44:39,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/data/e06bbce6a/bc8de04e324e4955bc329781f6c8774e/FLAG3461c8b36 [2021-11-25 17:44:40,310 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:44:40,310 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2021-11-25 17:44:40,317 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/data/e06bbce6a/bc8de04e324e4955bc329781f6c8774e/FLAG3461c8b36 [2021-11-25 17:44:40,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/data/e06bbce6a/bc8de04e324e4955bc329781f6c8774e [2021-11-25 17:44:40,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:44:40,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:44:40,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:44:40,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:44:40,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:44:40,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:40,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e637398 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40, skipping insertion in model container [2021-11-25 17:44:40,723 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:40,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:44:40,744 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:44:40,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:44:40,911 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:44:40,934 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:44:40,966 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:44:40,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40 WrapperNode [2021-11-25 17:44:40,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:44:40,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:44:40,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:44:40,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:44:40,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:40,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,014 INFO L137 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-25 17:44:41,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:44:41,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:44:41,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:44:41,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:44:41,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:44:41,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:44:41,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:44:41,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:44:41,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (1/1) ... [2021-11-25 17:44:41,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:44:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:41,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:44:41,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:44:41,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 17:44:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:44:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:44:41,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 17:44:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 17:44:41,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 17:44:41,226 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:44:41,228 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:44:41,413 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:44:41,433 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:44:41,433 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 17:44:41,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:41 BoogieIcfgContainer [2021-11-25 17:44:41,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:44:41,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:44:41,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:44:41,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:44:41,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:44:40" (1/3) ... [2021-11-25 17:44:41,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddf5c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:41, skipping insertion in model container [2021-11-25 17:44:41,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:44:40" (2/3) ... [2021-11-25 17:44:41,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ddf5c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:44:41, skipping insertion in model container [2021-11-25 17:44:41,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:44:41" (3/3) ... [2021-11-25 17:44:41,453 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2021-11-25 17:44:41,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:44:41,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 17:44:41,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:44:41,566 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, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:44:41,567 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 17:44:41,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) [2021-11-25 17:44:41,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 17:44:41,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:41,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 17:44:41,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:41,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash 70445, now seen corresponding path program 1 times [2021-11-25 17:44:41,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:41,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160220060] [2021-11-25 17:44:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:41,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:41,901 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:41,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160220060] [2021-11-25 17:44:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160220060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:41,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:41,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:44:41,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419456340] [2021-11-25 17:44:41,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:41,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:44:41,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:44:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:44:41,969 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:44:42,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:42,066 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-11-25 17:44:42,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:44:42,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 17:44:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:42,080 INFO L225 Difference]: With dead ends: 27 [2021-11-25 17:44:42,081 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 17:44:42,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:44:42,097 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:42,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:44:42,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 17:44:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 17:44:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 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) [2021-11-25 17:44:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-25 17:44:42,156 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 3 [2021-11-25 17:44:42,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:42,156 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-25 17:44:42,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:44:42,159 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-25 17:44:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 17:44:42,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:42,160 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2021-11-25 17:44:42,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:44:42,161 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:42,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2098673415, now seen corresponding path program 1 times [2021-11-25 17:44:42,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:42,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437263109] [2021-11-25 17:44:42,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:42,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:42,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 17:44:42,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:42,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437263109] [2021-11-25 17:44:42,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437263109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:42,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:44:42,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:44:42,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808197047] [2021-11-25 17:44:42,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:42,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:44:42,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:42,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:44:42,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:44:42,259 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:44:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:42,287 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-11-25 17:44:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:44:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 17:44:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:42,289 INFO L225 Difference]: With dead ends: 15 [2021-11-25 17:44:42,290 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 17:44:42,290 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:44:42,298 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:42,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:44:42,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 17:44:42,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 17:44:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 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) [2021-11-25 17:44:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-25 17:44:42,311 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-11-25 17:44:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:42,315 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-25 17:44:42,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:44:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-25 17:44:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 17:44:42,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:42,318 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-11-25 17:44:42,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:44:42,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:42,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash 634366471, now seen corresponding path program 1 times [2021-11-25 17:44:42,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:42,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151453397] [2021-11-25 17:44:42,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:42,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:42,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:42,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151453397] [2021-11-25 17:44:42,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151453397] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:42,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884627456] [2021-11-25 17:44:42,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:42,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:42,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:42,405 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:42,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:44:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:42,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 17:44:42,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:44:42,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:42,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 17:44:42,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884627456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:44:42,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 17:44:42,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-25 17:44:42,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510997709] [2021-11-25 17:44:42,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:44:42,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:44:42,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:42,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:44:42,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:44:42,562 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-25 17:44:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:42,646 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-25 17:44:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:44:42,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2021-11-25 17:44:42,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:42,649 INFO L225 Difference]: With dead ends: 14 [2021-11-25 17:44:42,649 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 17:44:42,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:44:42,653 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 18 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:42,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:44:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 17:44:42,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2021-11-25 17:44:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-25 17:44:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-25 17:44:42,658 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-11-25 17:44:42,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:42,658 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-25 17:44:42,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-25 17:44:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-25 17:44:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 17:44:42,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:42,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:44:42,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:44:42,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:42,861 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1809347634, now seen corresponding path program 1 times [2021-11-25 17:44:42,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:42,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879546656] [2021-11-25 17:44:42,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:42,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:42,953 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:42,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879546656] [2021-11-25 17:44:42,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879546656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:42,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548017819] [2021-11-25 17:44:42,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:42,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:42,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:42,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:42,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 17:44:43,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:43,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 17:44:43,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:44:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:43,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:44:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:43,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548017819] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:44:43,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [212131956] [2021-11-25 17:44:43,224 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:44:43,225 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:44:43,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:44:43,237 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:44:43,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:44:43,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:44:43,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:44:43,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:44:43,561 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-25 17:44:43,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 110 [2021-11-25 17:44:43,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:43,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:43,942 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:44:44,262 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '218#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:44:44,263 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:44:44,263 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:44:44,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2021-11-25 17:44:44,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143750373] [2021-11-25 17:44:44,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:44:44,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:44:44,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:44,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:44:44,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:44:44,266 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 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) [2021-11-25 17:44:44,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:44,327 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-25 17:44:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 17:44:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 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) Word has length 8 [2021-11-25 17:44:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:44,328 INFO L225 Difference]: With dead ends: 23 [2021-11-25 17:44:44,328 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 17:44:44,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-25 17:44:44,330 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:44,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:44:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 17:44:44,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 17:44:44,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 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) [2021-11-25 17:44:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-25 17:44:44,335 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 8 [2021-11-25 17:44:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:44,335 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-25 17:44:44,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.7) internal successors, (17), 9 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) [2021-11-25 17:44:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-25 17:44:44,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 17:44:44,336 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:44,336 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1] [2021-11-25 17:44:44,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:44:44,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:44,537 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:44,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1493603826, now seen corresponding path program 2 times [2021-11-25 17:44:44,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:44,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344261821] [2021-11-25 17:44:44,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:44,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:44,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:44,626 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:44,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344261821] [2021-11-25 17:44:44,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344261821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:44,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835807021] [2021-11-25 17:44:44,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:44:44,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:44,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:44,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:44,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 17:44:44,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 17:44:44,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:44:44,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 17:44:44,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:44:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:44,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:44:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:44,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835807021] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:44:44,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699679856] [2021-11-25 17:44:44,881 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:44:44,882 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:44:44,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:44:44,883 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:44:44,883 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:44:44,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:44:44,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:44:44,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:44:45,028 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-25 17:44:45,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 110 [2021-11-25 17:44:45,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:45,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:45,282 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:44:45,508 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '372#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:44:45,508 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:44:45,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:44:45,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2021-11-25 17:44:45,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51860416] [2021-11-25 17:44:45,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:44:45,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-25 17:44:45,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:45,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-25 17:44:45,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-11-25 17:44:45,511 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 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) [2021-11-25 17:44:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:45,656 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-25 17:44:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:44:45,661 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 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 14 [2021-11-25 17:44:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:45,661 INFO L225 Difference]: With dead ends: 35 [2021-11-25 17:44:45,662 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 17:44:45,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-11-25 17:44:45,663 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 38 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:45,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 49 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:44:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 17:44:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-25 17:44:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-11-25 17:44:45,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-25 17:44:45,670 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 14 [2021-11-25 17:44:45,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:45,670 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-25 17:44:45,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 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) [2021-11-25 17:44:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-25 17:44:45,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 17:44:45,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:45,671 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1] [2021-11-25 17:44:45,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 17:44:45,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:45,872 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:45,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash 464656014, now seen corresponding path program 3 times [2021-11-25 17:44:45,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:45,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410641375] [2021-11-25 17:44:45,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:45,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:46,109 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:46,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:46,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410641375] [2021-11-25 17:44:46,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410641375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:46,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353803305] [2021-11-25 17:44:46,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 17:44:46,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:46,112 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:46,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 17:44:46,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 17:44:46,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:44:46,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 17:44:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:44:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:46,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:44:46,637 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:46,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353803305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:44:46,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [181996667] [2021-11-25 17:44:46,640 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:44:46,640 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:44:46,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:44:46,641 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:44:46,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:44:46,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:44:46,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:44:46,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:44:46,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:46,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 119 treesize of output 109 [2021-11-25 17:44:46,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:46,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:46,867 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:44:47,402 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '654#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:44:47,402 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:44:47,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:44:47,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2021-11-25 17:44:47,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014664635] [2021-11-25 17:44:47,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:44:47,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-25 17:44:47,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-25 17:44:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 17:44:47,411 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-11-25 17:44:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:47,826 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-11-25 17:44:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-25 17:44:47,827 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 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 26 [2021-11-25 17:44:47,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:47,828 INFO L225 Difference]: With dead ends: 59 [2021-11-25 17:44:47,828 INFO L226 Difference]: Without dead ends: 53 [2021-11-25 17:44:47,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 47 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=681, Invalid=2181, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 17:44:47,831 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 78 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:47,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 49 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:44:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-25 17:44:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-25 17:44:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 52 states have internal predecessors, (54), 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) [2021-11-25 17:44:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-11-25 17:44:47,840 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 26 [2021-11-25 17:44:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:47,841 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-11-25 17:44:47,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 33 states have internal predecessors, (53), 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) [2021-11-25 17:44:47,841 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-11-25 17:44:47,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-25 17:44:47,843 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:47,843 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1] [2021-11-25 17:44:47,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 17:44:48,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 17:44:48,058 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:48,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:48,058 INFO L85 PathProgramCache]: Analyzing trace with hash -555274354, now seen corresponding path program 4 times [2021-11-25 17:44:48,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:48,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860853254] [2021-11-25 17:44:48,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:48,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:48,624 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860853254] [2021-11-25 17:44:48,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860853254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:48,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992673602] [2021-11-25 17:44:48,625 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 17:44:48,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:48,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:48,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:48,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 17:44:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:48,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-25 17:44:48,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:44:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:48,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:44:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:49,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992673602] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:44:49,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [441973625] [2021-11-25 17:44:49,976 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:44:49,976 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:44:49,977 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:44:49,977 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:44:49,977 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:44:49,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:44:49,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:44:50,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:44:50,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:44:50,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 119 treesize of output 109 [2021-11-25 17:44:50,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:50,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:44:50,186 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:44:51,036 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1192#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:44:51,037 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:44:51,037 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:44:51,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 65 [2021-11-25 17:44:51,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994485500] [2021-11-25 17:44:51,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:44:51,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-25 17:44:51,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:44:51,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-25 17:44:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1144, Invalid=3968, Unknown=0, NotChecked=0, Total=5112 [2021-11-25 17:44:51,043 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 66 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 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) [2021-11-25 17:44:52,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:44:52,052 INFO L93 Difference]: Finished difference Result 107 states and 124 transitions. [2021-11-25 17:44:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-25 17:44:52,053 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 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 50 [2021-11-25 17:44:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:44:52,055 INFO L225 Difference]: With dead ends: 107 [2021-11-25 17:44:52,055 INFO L226 Difference]: Without dead ends: 101 [2021-11-25 17:44:52,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 95 SyntacticMatches, 15 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4069 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2617, Invalid=7685, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 17:44:52,063 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 212 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:44:52,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 55 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:44:52,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-25 17:44:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-25 17:44:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 99 states have (on average 1.0303030303030303) internal successors, (102), 100 states have internal predecessors, (102), 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) [2021-11-25 17:44:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2021-11-25 17:44:52,077 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 50 [2021-11-25 17:44:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:44:52,077 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2021-11-25 17:44:52,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 65 states have internal predecessors, (101), 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) [2021-11-25 17:44:52,078 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2021-11-25 17:44:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 17:44:52,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:44:52,082 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1] [2021-11-25 17:44:52,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 17:44:52,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:52,302 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:44:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:44:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1608540558, now seen corresponding path program 5 times [2021-11-25 17:44:52,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:44:52,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558073603] [2021-11-25 17:44:52,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:44:52,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:44:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:44:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:44:53,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:44:53,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558073603] [2021-11-25 17:44:53,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558073603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:44:53,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467288980] [2021-11-25 17:44:53,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:44:53,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:44:53,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:44:54,006 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:44:54,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 17:45:07,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2021-11-25 17:45:07,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:45:07,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-25 17:45:07,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:08,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:45:11,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:11,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467288980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:45:11,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1959786907] [2021-11-25 17:45:11,350 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:45:11,350 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:45:11,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:45:11,351 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:45:11,351 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:45:11,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:45:11,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:45:11,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:45:11,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 17:45:11,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 119 treesize of output 109 [2021-11-25 17:45:11,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:45:11,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:45:11,515 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:45:13,639 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2242#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:45:13,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:45:13,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:45:13,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2021-11-25 17:45:13,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336365461] [2021-11-25 17:45:13,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:45:13,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-25 17:45:13,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:45:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-25 17:45:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4312, Invalid=14048, Unknown=0, NotChecked=0, Total=18360 [2021-11-25 17:45:13,652 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 130 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 129 states have internal predecessors, (197), 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) [2021-11-25 17:45:16,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:16,208 INFO L93 Difference]: Finished difference Result 203 states and 236 transitions. [2021-11-25 17:45:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-11-25 17:45:16,209 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 129 states have internal predecessors, (197), 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 98 [2021-11-25 17:45:16,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:16,211 INFO L225 Difference]: With dead ends: 203 [2021-11-25 17:45:16,211 INFO L226 Difference]: Without dead ends: 197 [2021-11-25 17:45:16,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 191 SyntacticMatches, 31 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15333 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=10329, Invalid=28677, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 17:45:16,220 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 470 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:16,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 67 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:45:16,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-25 17:45:16,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-25 17:45:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.0153846153846153) internal successors, (198), 196 states have internal predecessors, (198), 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) [2021-11-25 17:45:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2021-11-25 17:45:16,237 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 98 [2021-11-25 17:45:16,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:16,238 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2021-11-25 17:45:16,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.5153846153846153) internal successors, (197), 129 states have internal predecessors, (197), 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) [2021-11-25 17:45:16,239 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2021-11-25 17:45:16,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-25 17:45:16,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:16,247 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1] [2021-11-25 17:45:16,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:16,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:45:16,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:45:16,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1745798542, now seen corresponding path program 6 times [2021-11-25 17:45:16,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:45:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642385254] [2021-11-25 17:45:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:16,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:45:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:45:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:21,045 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:45:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642385254] [2021-11-25 17:45:21,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642385254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:45:21,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619017225] [2021-11-25 17:45:21,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 17:45:21,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:45:21,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:45:21,046 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:45:21,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 17:45:21,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 17:45:21,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:45:21,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 128 conjunts are in the unsatisfiable core [2021-11-25 17:45:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:45:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:21,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:45:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 5922 backedges. 0 proven. 5922 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:45:32,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619017225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:45:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [351758645] [2021-11-25 17:45:32,910 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:45:32,910 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:45:32,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:45:32,910 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:45:32,911 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:45:32,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:45:32,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:45:32,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:45:33,020 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-25 17:45:33,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 110 [2021-11-25 17:45:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:45:33,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:45:33,178 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:45:38,526 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4316#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:45:38,526 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:45:38,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:45:38,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [128, 128, 128] total 257 [2021-11-25 17:45:38,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855305671] [2021-11-25 17:45:38,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:45:38,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2021-11-25 17:45:38,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:45:38,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2021-11-25 17:45:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16792, Invalid=52640, Unknown=0, NotChecked=0, Total=69432 [2021-11-25 17:45:38,541 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand has 258 states, 258 states have (on average 1.5077519379844961) internal successors, (389), 257 states have internal predecessors, (389), 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) [2021-11-25 17:45:48,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:45:48,802 INFO L93 Difference]: Finished difference Result 395 states and 460 transitions. [2021-11-25 17:45:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-11-25 17:45:48,803 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 1.5077519379844961) internal successors, (389), 257 states have internal predecessors, (389), 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 194 [2021-11-25 17:45:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:45:48,807 INFO L225 Difference]: With dead ends: 395 [2021-11-25 17:45:48,807 INFO L226 Difference]: Without dead ends: 389 [2021-11-25 17:45:48,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 834 GetRequests, 383 SyntacticMatches, 63 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59365 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=41113, Invalid=110597, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 17:45:48,820 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 998 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:45:48,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 85 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:45:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-25 17:45:48,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 389. [2021-11-25 17:45:48,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 1.0077519379844961) internal successors, (390), 388 states have internal predecessors, (390), 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) [2021-11-25 17:45:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 390 transitions. [2021-11-25 17:45:48,848 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 390 transitions. Word has length 194 [2021-11-25 17:45:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:45:48,849 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 390 transitions. [2021-11-25 17:45:48,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 1.5077519379844961) internal successors, (389), 257 states have internal predecessors, (389), 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) [2021-11-25 17:45:48,850 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 390 transitions. [2021-11-25 17:45:48,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-11-25 17:45:48,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:45:48,859 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 1, 1, 1, 1, 1] [2021-11-25 17:45:48,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 17:45:49,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:45:49,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:45:49,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:45:49,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1901825422, now seen corresponding path program 7 times [2021-11-25 17:45:49,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:45:49,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875924848] [2021-11-25 17:45:49,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:45:49,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:45:49,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:05,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:46:05,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875924848] [2021-11-25 17:46:05,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875924848] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:46:05,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753333323] [2021-11-25 17:46:05,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 17:46:05,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:46:05,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:46:05,990 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:46:05,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 17:46:06,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:46:06,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 1681 conjuncts, 256 conjunts are in the unsatisfiable core [2021-11-25 17:46:06,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:46:07,419 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:07,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:46:51,096 INFO L134 CoverageAnalysis]: Checked inductivity of 24130 backedges. 0 proven. 24130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:46:51,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753333323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:46:51,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [300030721] [2021-11-25 17:46:51,098 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 17:46:51,098 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:46:51,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:46:51,099 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:46:51,099 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:46:51,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-25 17:46:51,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-25 17:46:51,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 11 [2021-11-25 17:46:51,151 INFO L354 Elim1Store]: treesize reduction 19, result has 40.6 percent of original size [2021-11-25 17:46:51,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 110 [2021-11-25 17:46:51,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:46:51,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 17:46:51,271 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:47:10,227 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8438#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (< 2147483648 |ULTIMATE.start_main_#t~mem3#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_#t~mem3#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| 12))) (= |#NULL.base| 0))' at error location [2021-11-25 17:47:10,227 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:47:10,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:47:10,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [256, 256, 256] total 513 [2021-11-25 17:47:10,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642483123] [2021-11-25 17:47:10,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:47:10,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 514 states [2021-11-25 17:47:10,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:47:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 514 interpolants. [2021-11-25 17:47:10,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66328, Invalid=203552, Unknown=0, NotChecked=0, Total=269880 [2021-11-25 17:47:10,262 INFO L87 Difference]: Start difference. First operand 389 states and 390 transitions. Second operand has 514 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 513 states have internal predecessors, (773), 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) [2021-11-25 17:48:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:48:02,738 INFO L93 Difference]: Finished difference Result 779 states and 908 transitions. [2021-11-25 17:48:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 511 states. [2021-11-25 17:48:02,740 INFO L78 Accepts]: Start accepts. Automaton has has 514 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 513 states have internal predecessors, (773), 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 386 [2021-11-25 17:48:02,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:48:02,744 INFO L225 Difference]: With dead ends: 779 [2021-11-25 17:48:02,744 INFO L226 Difference]: Without dead ends: 773 [2021-11-25 17:48:02,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1666 GetRequests, 767 SyntacticMatches, 127 SemanticMatches, 772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233445 ImplicationChecksByTransitivity, 106.2s TimeCoverageRelationStatistics Valid=164121, Invalid=434181, Unknown=0, NotChecked=0, Total=598302 [2021-11-25 17:48:02,775 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2382 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2382 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:48:02,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2382 Valid, 79 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 17:48:02,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2021-11-25 17:48:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2021-11-25 17:48:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 771 states have (on average 1.0038910505836576) internal successors, (774), 772 states have internal predecessors, (774), 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) [2021-11-25 17:48:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 774 transitions. [2021-11-25 17:48:02,810 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 774 transitions. Word has length 386 [2021-11-25 17:48:02,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:48:02,811 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 774 transitions. [2021-11-25 17:48:02,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 514 states, 514 states have (on average 1.5038910505836576) internal successors, (773), 513 states have internal predecessors, (773), 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) [2021-11-25 17:48:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 774 transitions. [2021-11-25 17:48:02,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2021-11-25 17:48:02,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:48:02,839 INFO L514 BasicCegarLoop]: trace histogram [255, 255, 255, 1, 1, 1, 1, 1] [2021-11-25 17:48:02,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 17:48:03,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 17:48:03,054 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 17:48:03,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:48:03,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1739922830, now seen corresponding path program 8 times [2021-11-25 17:48:03,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:48:03,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651950006] [2021-11-25 17:48:03,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:48:03,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:48:04,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:49:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 97410 backedges. 0 proven. 97410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:49:07,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:49:07,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651950006] [2021-11-25 17:49:07,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651950006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:49:07,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935293908] [2021-11-25 17:49:07,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:49:07,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:49:07,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:49:07,242 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:49:07,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47fe24f9-5bf7-491f-9811-7c606f01faae/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process