./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba5463b5e3d18d90d4f385730b7339ac899bebbe ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_77| --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:37:54,645 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:37:54,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:37:54,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:37:54,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:37:54,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:37:54,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:37:54,732 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:37:54,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:37:54,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:37:54,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:37:54,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:37:54,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:37:54,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:37:54,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:37:54,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:37:54,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:37:54,763 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:37:54,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:37:54,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:37:54,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:37:54,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:37:54,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:37:54,775 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:37:54,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:37:54,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:37:54,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:37:54,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:37:54,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:37:54,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:37:54,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:37:54,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:37:54,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:37:54,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:37:54,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:37:54,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:37:54,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:37:54,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:37:54,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:37:54,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:37:54,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:37:54,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:37:54,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:37:54,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:37:54,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:37:54,842 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:37:54,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:37:54,843 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:37:54,843 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:37:54,844 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:37:54,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:37:54,844 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:37:54,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:37:54,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:37:54,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:37:54,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:37:54,846 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:37:54,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:37:54,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:37:54,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:37:54,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:37:54,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:37:54,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:37:54,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:37:54,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:37:54,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:37:54,850 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:37:54,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:37:54,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:37:54,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:37:54,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:37:54,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:37:54,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:37:54,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:54,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:37:54,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:37:54,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:37:54,853 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:37:54,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:37:54,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:37:54,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:37:54,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:37:54,855 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_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba5463b5e3d18d90d4f385730b7339ac899bebbe [2021-10-13 07:37:55,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:37:55,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:37:55,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:37:55,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:37:55,171 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:37:55,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-10-13 07:37:55,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/data/e49c3fb2a/18ffb511d2564782901c171ffcf7cb6a/FLAG106b7b2a9 [2021-10-13 07:37:55,910 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:37:55,914 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-10-13 07:37:55,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/data/e49c3fb2a/18ffb511d2564782901c171ffcf7cb6a/FLAG106b7b2a9 [2021-10-13 07:37:56,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/data/e49c3fb2a/18ffb511d2564782901c171ffcf7cb6a [2021-10-13 07:37:56,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:37:56,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:37:56,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:37:56,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:37:56,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:37:56,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:56" (1/1) ... [2021-10-13 07:37:56,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@647e95d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:56, skipping insertion in model container [2021-10-13 07:37:56,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:37:56" (1/1) ... [2021-10-13 07:37:56,156 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:37:56,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:37:56,716 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-10-13 07:37:56,868 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-10-13 07:37:56,869 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-10-13 07:37:56,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:37:56,884 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:37:56,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-10-13 07:37:57,005 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-10-13 07:37:57,006 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-10-13 07:37:57,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:37:57,051 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:37:57,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57 WrapperNode [2021-10-13 07:37:57,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:37:57,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:57,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:37:57,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:37:57,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:37:57,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:37:57,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:37:57,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:37:57,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:37:57,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:37:57,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:37:57,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:37:57,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (1/1) ... [2021-10-13 07:37:57,369 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:37:57,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:37:57,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:37:57,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:37:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-13 07:37:57,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-13 07:37:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-13 07:37:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-13 07:37:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:37:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-10-13 07:37:57,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-13 07:37:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 07:37:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:37:57,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:37:57,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:38:01,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:38:01,938 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-10-13 07:38:01,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:01 BoogieIcfgContainer [2021-10-13 07:38:01,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:38:01,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:38:01,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:38:01,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:38:01,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:37:56" (1/3) ... [2021-10-13 07:38:01,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a9923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:01, skipping insertion in model container [2021-10-13 07:38:01,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:37:57" (2/3) ... [2021-10-13 07:38:01,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7a9923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:38:01, skipping insertion in model container [2021-10-13 07:38:01,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:38:01" (3/3) ... [2021-10-13 07:38:01,958 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-10-13 07:38:01,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:38:01,965 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 07:38:02,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:38:02,034 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:38:02,034 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 07:38:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 103 states have (on average 1.854368932038835) internal successors, (191), 109 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:02,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:38:02,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:02,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:38:02,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:38:02,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:02,069 INFO L82 PathProgramCache]: Analyzing trace with hash 24759223, now seen corresponding path program 1 times [2021-10-13 07:38:02,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:02,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952657253] [2021-10-13 07:38:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:02,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:02,212 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:38:02,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057662930] [2021-10-13 07:38:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:02,213 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:02,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:02,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:02,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:38:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:02,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 07:38:02,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:02,588 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 11 treesize of output 7 [2021-10-13 07:38:02,691 INFO L354 Elim1Store]: treesize reduction 83, result has 23.9 percent of original size [2021-10-13 07:38:02,692 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 3 case distinctions, treesize of input 15 treesize of output 31 [2021-10-13 07:38:03,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2021-10-13 07:38:03,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:03,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:03,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:03,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952657253] [2021-10-13 07:38:03,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:38:03,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057662930] [2021-10-13 07:38:03,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057662930] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:03,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:03,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-13 07:38:03,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750294291] [2021-10-13 07:38:03,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:38:03,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:03,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:38:03,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:38:03,558 INFO L87 Difference]: Start difference. First operand has 110 states, 103 states have (on average 1.854368932038835) internal successors, (191), 109 states have internal predecessors, (191), 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 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:10,170 INFO L93 Difference]: Finished difference Result 312 states and 558 transitions. [2021-10-13 07:38:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:38:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:38:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:10,184 INFO L225 Difference]: With dead ends: 312 [2021-10-13 07:38:10,185 INFO L226 Difference]: Without dead ends: 196 [2021-10-13 07:38:10,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 110.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:38:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-13 07:38:10,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 111. [2021-10-13 07:38:10,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 110 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2021-10-13 07:38:10,256 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 4 [2021-10-13 07:38:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:10,257 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2021-10-13 07:38:10,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2021-10-13 07:38:10,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 07:38:10,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:10,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:10,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:10,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:10,475 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:38:10,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:10,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1811031903, now seen corresponding path program 1 times [2021-10-13 07:38:10,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:10,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419553764] [2021-10-13 07:38:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:10,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:10,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:10,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419553764] [2021-10-13 07:38:10,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419553764] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:10,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:10,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:38:10,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25976866] [2021-10-13 07:38:10,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:10,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:10,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:10,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:10,618 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:12,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:12,147 INFO L93 Difference]: Finished difference Result 205 states and 241 transitions. [2021-10-13 07:38:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:12,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2021-10-13 07:38:12,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:12,150 INFO L225 Difference]: With dead ends: 205 [2021-10-13 07:38:12,150 INFO L226 Difference]: Without dead ends: 153 [2021-10-13 07:38:12,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 07:38:12,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-10-13 07:38:12,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 111. [2021-10-13 07:38:12,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 110 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:12,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 129 transitions. [2021-10-13 07:38:12,161 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 129 transitions. Word has length 25 [2021-10-13 07:38:12,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:12,162 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 129 transitions. [2021-10-13 07:38:12,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:12,162 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 129 transitions. [2021-10-13 07:38:12,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 07:38:12,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:12,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:12,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:38:12,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:38:12,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:12,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1311583770, now seen corresponding path program 1 times [2021-10-13 07:38:12,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:12,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992237416] [2021-10-13 07:38:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:12,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:12,187 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:38:12,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140745408] [2021-10-13 07:38:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:12,188 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:12,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:12,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:12,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:38:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:12,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:38:12,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:12,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:12,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:12,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992237416] [2021-10-13 07:38:12,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:38:12,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140745408] [2021-10-13 07:38:12,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140745408] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:12,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:12,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:38:12,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127568865] [2021-10-13 07:38:12,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:38:12,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:12,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:38:12,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:12,662 INFO L87 Difference]: Start difference. First operand 111 states and 129 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:12,885 INFO L93 Difference]: Finished difference Result 265 states and 307 transitions. [2021-10-13 07:38:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:38:12,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2021-10-13 07:38:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:12,887 INFO L225 Difference]: With dead ends: 265 [2021-10-13 07:38:12,887 INFO L226 Difference]: Without dead ends: 159 [2021-10-13 07:38:12,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:38:12,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-13 07:38:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2021-10-13 07:38:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.2) internal successors, (180), 155 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 180 transitions. [2021-10-13 07:38:12,909 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 180 transitions. Word has length 28 [2021-10-13 07:38:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:12,911 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 180 transitions. [2021-10-13 07:38:12,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:12,911 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 180 transitions. [2021-10-13 07:38:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-13 07:38:12,913 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:12,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:12,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:13,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:13,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:38:13,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:13,139 INFO L82 PathProgramCache]: Analyzing trace with hash 331679925, now seen corresponding path program 1 times [2021-10-13 07:38:13,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:13,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568607416] [2021-10-13 07:38:13,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:13,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:13,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:38:13,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [245993878] [2021-10-13 07:38:13,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:13,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:13,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:13,205 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:13,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:38:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:13,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:38:13,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:13,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:38:13,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:13,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568607416] [2021-10-13 07:38:13,622 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:38:13,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245993878] [2021-10-13 07:38:13,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245993878] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:38:13,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:38:13,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:38:13,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62712082] [2021-10-13 07:38:13,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:38:13,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:38:13,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:38:13,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:13,625 INFO L87 Difference]: Start difference. First operand 156 states and 180 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:13,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:38:13,744 INFO L93 Difference]: Finished difference Result 298 states and 349 transitions. [2021-10-13 07:38:13,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:38:13,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 33 [2021-10-13 07:38:13,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:38:13,746 INFO L225 Difference]: With dead ends: 298 [2021-10-13 07:38:13,746 INFO L226 Difference]: Without dead ends: 160 [2021-10-13 07:38:13,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:38:13,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-13 07:38:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-13 07:38:13,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.1948051948051948) internal successors, (184), 159 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 184 transitions. [2021-10-13 07:38:13,776 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 184 transitions. Word has length 33 [2021-10-13 07:38:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:38:13,778 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 184 transitions. [2021-10-13 07:38:13,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:38:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 184 transitions. [2021-10-13 07:38:13,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-13 07:38:13,781 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:38:13,781 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:38:13,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:13,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-10-13 07:38:13,991 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-13 07:38:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:38:13,991 INFO L82 PathProgramCache]: Analyzing trace with hash -626718251, now seen corresponding path program 1 times [2021-10-13 07:38:13,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:38:13,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478118274] [2021-10-13 07:38:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:13,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:38:14,018 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:38:14,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051416564] [2021-10-13 07:38:14,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:38:14,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:14,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:38:14,023 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:38:14,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 07:38:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:38:14,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:38:14,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:38:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:14,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:38:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 07:38:14,548 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:38:14,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478118274] [2021-10-13 07:38:14,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:38:14,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051416564] [2021-10-13 07:38:14,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051416564] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:38:14,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [682960468] [2021-10-13 07:38:14,573 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2021-10-13 07:38:14,573 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:38:14,578 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:38:14,584 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:38:14,584 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:38:14,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,641 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:14,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-13 07:38:14,643 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:14,644 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,644 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:38:14,645 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:14,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:38:14,647 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:14,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-13 07:38:14,648 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:38:14,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:38:14,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-10-13 07:38:14,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:14,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:14,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:38:14,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:38:14,679 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,680 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:14,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:38:14,682 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:38:14,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:38:14,708 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:38:14,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-13 07:38:14,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:38:14,714 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:163, output treesize:166 [2021-10-13 07:38:14,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:38:14,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:38:14,943 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_77| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:38:14,946 INFO L168 Benchmark]: Toolchain (without parser) took 18809.75 ms. Allocated memory was 111.1 MB in the beginning and 190.8 MB in the end (delta: 79.7 MB). Free memory was 70.6 MB in the beginning and 72.0 MB in the end (delta: -1.3 MB). Peak memory consumption was 78.7 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:14,946 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 111.1 MB. Free memory is still 89.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:38:14,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 914.76 ms. Allocated memory is still 111.1 MB. Free memory was 70.4 MB in the beginning and 62.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:14,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 170.83 ms. Allocated memory is still 111.1 MB. Free memory was 62.0 MB in the beginning and 55.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:14,948 INFO L168 Benchmark]: Boogie Preprocessor took 132.42 ms. Allocated memory is still 111.1 MB. Free memory was 55.5 MB in the beginning and 48.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:14,949 INFO L168 Benchmark]: RCFGBuilder took 4583.02 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 71.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:14,949 INFO L168 Benchmark]: TraceAbstraction took 13000.73 ms. Allocated memory was 146.8 MB in the beginning and 190.8 MB in the end (delta: 44.0 MB). Free memory was 71.5 MB in the beginning and 72.0 MB in the end (delta: -528.7 kB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:38:14,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 111.1 MB. Free memory is still 89.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 914.76 ms. Allocated memory is still 111.1 MB. Free memory was 70.4 MB in the beginning and 62.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 170.83 ms. Allocated memory is still 111.1 MB. Free memory was 62.0 MB in the beginning and 55.5 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 132.42 ms. Allocated memory is still 111.1 MB. Free memory was 55.5 MB in the beginning and 48.5 MB in the end (delta: 6.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4583.02 ms. Allocated memory was 111.1 MB in the beginning and 146.8 MB in the end (delta: 35.7 MB). Free memory was 48.2 MB in the beginning and 71.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 35.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13000.73 ms. Allocated memory was 146.8 MB in the beginning and 190.8 MB in the end (delta: 44.0 MB). Free memory was 71.5 MB in the beginning and 72.0 MB in the end (delta: -528.7 kB). Peak memory consumption was 43.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_77| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_77|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:38:14,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717fb9a5-c50c-46e9-bb2d-0ec3b66d685c/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...