./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/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_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/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 32bit --witnessprinter.graph.data.programhash 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:23:38,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:23:38,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:23:38,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:23:38,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:23:38,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:23:38,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:23:38,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:23:38,729 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:23:38,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:23:38,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:23:38,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:23:38,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:23:38,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:23:38,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:23:38,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:23:38,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:23:38,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:23:38,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:23:38,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:23:38,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:23:38,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:23:38,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:23:38,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:23:38,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:23:38,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:23:38,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:23:38,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:23:38,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:23:38,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:23:38,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:23:38,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:23:38,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:23:38,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:23:38,787 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:23:38,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:23:38,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:23:38,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:23:38,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:23:38,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:23:38,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:23:38,791 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 18:23:38,835 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:23:38,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:23:38,839 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:23:38,839 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:23:38,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:23:38,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:23:38,847 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:23:38,847 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:23:38,847 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:23:38,847 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:23:38,848 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:23:38,849 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:23:38,849 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:23:38,849 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:23:38,849 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:23:38,850 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:23:38,850 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:23:38,850 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:23:38,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:23:38,851 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:23:38,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:23:38,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:23:38,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:23:38,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:23:38,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:23:38,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:23:38,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:23:38,854 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:23:38,854 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:23:38,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:23:38,855 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:23:38,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:23:38,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:23:38,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:23:38,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:38,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:23:38,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:23:38,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:23:38,857 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:23:38,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:23:38,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:23:38,857 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:23:38,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:23:38,858 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_ce806087-3cd0-41df-badc-bce6a342eb0e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd [2021-11-25 18:23:39,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:23:39,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:23:39,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:23:39,191 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:23:39,192 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:23:39,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-11-25 18:23:39,257 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/data/114cff318/3da4b10aab594addaae7c98c3f876d30/FLAG4d3df6408 [2021-11-25 18:23:39,697 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:23:39,697 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-11-25 18:23:39,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/data/114cff318/3da4b10aab594addaae7c98c3f876d30/FLAG4d3df6408 [2021-11-25 18:23:40,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/data/114cff318/3da4b10aab594addaae7c98c3f876d30 [2021-11-25 18:23:40,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:23:40,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:23:40,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:40,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:23:40,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:23:40,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475a73ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40, skipping insertion in model container [2021-11-25 18:23:40,088 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:23:40,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:23:40,286 WARN L230 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_ce806087-3cd0-41df-badc-bce6a342eb0e/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-11-25 18:23:40,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:40,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:23:40,329 WARN L230 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_ce806087-3cd0-41df-badc-bce6a342eb0e/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-11-25 18:23:40,336 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:23:40,352 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:23:40,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40 WrapperNode [2021-11-25 18:23:40,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:23:40,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:40,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:23:40,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:23:40,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,369 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,388 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-11-25 18:23:40,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:23:40,389 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:23:40,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:23:40,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:23:40,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:23:40,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:23:40,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:23:40,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:23:40,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (1/1) ... [2021-11-25 18:23:40,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:23:40,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:40,458 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:23:40,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:23:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:23:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:23:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:23:40,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:23:40,565 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:23:40,566 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:23:40,713 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:23:40,733 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:23:40,739 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:23:40,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:40 BoogieIcfgContainer [2021-11-25 18:23:40,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:23:40,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:23:40,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:23:40,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:23:40,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:23:40" (1/3) ... [2021-11-25 18:23:40,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59054d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:40, skipping insertion in model container [2021-11-25 18:23:40,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:23:40" (2/3) ... [2021-11-25 18:23:40,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59054d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:23:40, skipping insertion in model container [2021-11-25 18:23:40,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:23:40" (3/3) ... [2021-11-25 18:23:40,750 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark08_conjunctive.i [2021-11-25 18:23:40,758 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:23:40,758 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-25 18:23:40,818 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:23:40,827 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 18:23:40,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-25 18:23:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:23:40,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:40,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:23:40,859 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 18:23:40,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:40,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-25 18:23:40,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:40,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29351737] [2021-11-25 18:23:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:40,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,056 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 18:23:41,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:41,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29351737] [2021-11-25 18:23:41,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29351737] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:41,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:41,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:41,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46277298] [2021-11-25 18:23:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:41,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:41,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:41,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:41,100 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:41,173 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-25 18:23:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:41,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 18:23:41,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:41,184 INFO L225 Difference]: With dead ends: 19 [2021-11-25 18:23:41,184 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:23:41,187 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 18:23:41,191 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:41,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:41,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:23:41,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-25 18:23:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-25 18:23:41,221 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-25 18:23:41,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:41,222 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-25 18:23:41,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,222 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-25 18:23:41,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:23:41,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:41,223 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:23:41,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:23:41,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-25 18:23:41,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:41,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458805698] [2021-11-25 18:23:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:41,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,268 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 18:23:41,269 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:41,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458805698] [2021-11-25 18:23:41,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458805698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:41,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:41,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:23:41,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978842105] [2021-11-25 18:23:41,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:41,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:23:41,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:41,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:23:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:23:41,273 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 18:23:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:41,291 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 18:23:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:23:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-25 18:23:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:41,295 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:23:41,295 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:23:41,296 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 18:23:41,298 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:41,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:23:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:23:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:23:41,308 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-25 18:23:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:41,308 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:23:41,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 18:23:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:23:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:23:41,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:41,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:23:41,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:23:41,314 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-25 18:23:41,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:41,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427623156] [2021-11-25 18:23:41,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:41,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,386 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 18:23:41,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:41,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427623156] [2021-11-25 18:23:41,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427623156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:41,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:41,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:41,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379850304] [2021-11-25 18:23:41,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:41,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:41,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:41,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:41,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:41,390 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:41,422 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-25 18:23:41,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:23:41,424 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:23:41,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:41,425 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:23:41,426 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:23:41,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:41,428 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:41,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:23:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-25 18:23:41,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:23:41,438 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-11-25 18:23:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:41,440 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:23:41,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,441 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:23:41,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:23:41,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:41,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:41,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:23:41,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-25 18:23:41,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:41,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426876341] [2021-11-25 18:23:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:41,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,519 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 18:23:41,519 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:41,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426876341] [2021-11-25 18:23:41,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426876341] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:41,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:23:41,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 18:23:41,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922106211] [2021-11-25 18:23:41,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:41,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:23:41,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:41,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:23:41,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:23:41,523 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:41,559 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 18:23:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:23:41,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:23:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:41,560 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:23:41,560 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:23:41,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:23:41,562 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:41,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:41,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:23:41,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:23:41,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:23:41,567 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-25 18:23:41,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:41,567 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:23:41,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:23:41,568 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:23:41,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 18:23:41,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:41,591 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:41,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:23:41,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:41,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:41,593 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-25 18:23:41,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:41,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139268166] [2021-11-25 18:23:41,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:41,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:41,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:41,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:41,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139268166] [2021-11-25 18:23:41,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139268166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255756929] [2021-11-25 18:23:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:41,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:41,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:41,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:41,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:23:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:41,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:23:41,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:41,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:41,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:41,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:41,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255756929] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:41,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1456249116] [2021-11-25 18:23:42,018 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:23:42,019 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:42,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:42,028 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:42,029 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:42,565 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:43,325 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '234#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~i~0#1|) (< 2147483647 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~sum~0#1|)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:43,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:43,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:43,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-11-25 18:23:43,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697578091] [2021-11-25 18:23:43,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:43,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:23:43,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:43,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:23:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:23:43,328 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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) [2021-11-25 18:23:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:43,442 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-25 18:23:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:23:43,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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 9 [2021-11-25 18:23:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:43,444 INFO L225 Difference]: With dead ends: 25 [2021-11-25 18:23:43,444 INFO L226 Difference]: Without dead ends: 24 [2021-11-25 18:23:43,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:23:43,446 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:43,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-25 18:23:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-25 18:23:43,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 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 18:23:43,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-25 18:23:43,451 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2021-11-25 18:23:43,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:43,451 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-25 18:23:43,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 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) [2021-11-25 18:23:43,452 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-25 18:23:43,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:23:43,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:43,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-25 18:23:43,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:43,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:43,671 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:43,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash 865667262, now seen corresponding path program 1 times [2021-11-25 18:23:43,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:43,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345653812] [2021-11-25 18:23:43,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:43,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:43,732 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 18:23:43,733 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345653812] [2021-11-25 18:23:43,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345653812] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:43,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353156134] [2021-11-25 18:23:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:43,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:43,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:43,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:43,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:23:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:43,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:23:43,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:43,854 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 18:23:43,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:23:43,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353156134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:23:43,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:23:43,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-25 18:23:43,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045704942] [2021-11-25 18:23:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:23:43,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:23:43,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:43,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:23:43,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:23:43,857 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 18:23:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:43,898 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-25 18:23:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:23:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 10 [2021-11-25 18:23:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:43,899 INFO L225 Difference]: With dead ends: 22 [2021-11-25 18:23:43,899 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 18:23:43,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:23:43,901 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:43,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:23:43,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 18:23:43,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 18:23:43,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 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 18:23:43,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-25 18:23:43,905 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2021-11-25 18:23:43,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:43,905 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-25 18:23:43,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 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 18:23:43,906 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-25 18:23:43,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 18:23:43,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:43,906 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-25 18:23:43,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 18:23:44,131 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 18:23:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2021-11-25 18:23:44,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:44,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729947920] [2021-11-25 18:23:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:44,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:44,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:44,172 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:44,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729947920] [2021-11-25 18:23:44,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729947920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:44,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993037589] [2021-11-25 18:23:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:44,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:44,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:44,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:44,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:23:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:44,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:23:44,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:44,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:44,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:44,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993037589] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:44,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1399226474] [2021-11-25 18:23:44,307 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:23:44,308 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:44,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:44,308 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:44,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:44,552 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:45,087 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '462#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~sum~0#1|) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:45,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:45,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:45,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-25 18:23:45,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397028036] [2021-11-25 18:23:45,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:45,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:23:45,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:45,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:23:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-25 18:23:45,089 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 18:23:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:45,204 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-11-25 18:23:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:23:45,204 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 11 [2021-11-25 18:23:45,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:45,205 INFO L225 Difference]: With dead ends: 31 [2021-11-25 18:23:45,205 INFO L226 Difference]: Without dead ends: 30 [2021-11-25 18:23:45,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:23:45,207 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:45,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:45,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-25 18:23:45,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-25 18:23:45,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 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 18:23:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-25 18:23:45,220 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 11 [2021-11-25 18:23:45,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:45,221 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-25 18:23:45,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 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 18:23:45,222 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-25 18:23:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 18:23:45,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:45,223 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1] [2021-11-25 18:23:45,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:45,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:23:45,447 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:45,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1075330740, now seen corresponding path program 2 times [2021-11-25 18:23:45,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:45,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798276046] [2021-11-25 18:23:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:45,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:45,543 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:45,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798276046] [2021-11-25 18:23:45,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798276046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:45,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975638777] [2021-11-25 18:23:45,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:23:45,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:45,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:45,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:45,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:23:45,582 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 18:23:45,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:23:45,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:23:45,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:45,759 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:45,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:45,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975638777] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:45,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [732710838] [2021-11-25 18:23:45,969 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:23:45,969 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:45,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:45,970 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:45,970 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:46,203 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:46,930 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '677#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~i~0#1|) (< 2147483647 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~sum~0#1|)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:46,930 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:46,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:46,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-11-25 18:23:46,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827217885] [2021-11-25 18:23:46,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:46,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 18:23:46,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 18:23:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:23:46,934 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 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 18:23:47,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:47,267 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-11-25 18:23:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 18:23:47,267 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 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 19 [2021-11-25 18:23:47,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:47,268 INFO L225 Difference]: With dead ends: 44 [2021-11-25 18:23:47,268 INFO L226 Difference]: Without dead ends: 43 [2021-11-25 18:23:47,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=249, Invalid=1233, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 18:23:47,270 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:47,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 4 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-25 18:23:47,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-11-25 18:23:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 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 18:23:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-25 18:23:47,280 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2021-11-25 18:23:47,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:47,281 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-25 18:23:47,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 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 18:23:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-25 18:23:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 18:23:47,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:47,282 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-25 18:23:47,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:23:47,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-25 18:23:47,503 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 18:23:47,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash 953924228, now seen corresponding path program 2 times [2021-11-25 18:23:47,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:47,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420721516] [2021-11-25 18:23:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:47,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:47,612 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:47,613 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420721516] [2021-11-25 18:23:47,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420721516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:47,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946432299] [2021-11-25 18:23:47,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:23:47,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:47,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:47,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:47,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:23:47,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-25 18:23:47,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:23:47,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:23:47,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:47,738 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 18:23:47,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:23:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-25 18:23:47,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946432299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:23:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021513524] [2021-11-25 18:23:47,811 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:23:47,811 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:23:47,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:23:47,812 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:23:47,812 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:23:48,021 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:23:48,628 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '968#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~sum~0#1|) (< 2147483646 |ULTIMATE.start_main_#t~post4#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:23:48,629 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:23:48,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:23:48,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2021-11-25 18:23:48,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684511915] [2021-11-25 18:23:48,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:23:48,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 18:23:48,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:23:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 18:23:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-11-25 18:23:48,632 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 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 18:23:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:23:48,862 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-25 18:23:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:23:48,863 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 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 18:23:48,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:23:48,863 INFO L225 Difference]: With dead ends: 41 [2021-11-25 18:23:48,863 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 18:23:48,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-11-25 18:23:48,865 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:23:48,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:23:48,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 18:23:48,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-25 18:23:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 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 18:23:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-25 18:23:48,871 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2021-11-25 18:23:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:23:48,871 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-25 18:23:48,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 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 18:23:48,871 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-25 18:23:48,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:23:48,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:23:48,873 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1] [2021-11-25 18:23:48,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-25 18:23:49,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:49,100 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:23:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:23:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash 237862964, now seen corresponding path program 3 times [2021-11-25 18:23:49,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:23:49,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175534044] [2021-11-25 18:23:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:23:49,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:23:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:23:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:49,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:23:49,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175534044] [2021-11-25 18:23:49,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175534044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:23:49,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659330549] [2021-11-25 18:23:49,299 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:23:49,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:23:49,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:23:49,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:23:49,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:23:49,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:23:49,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:23:49,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:23:49,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:23:49,836 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:23:49,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:24:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:24:49,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659330549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:24:49,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1166632354] [2021-11-25 18:24:49,701 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 18:24:49,701 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:24:49,702 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:24:49,702 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:24:49,702 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:24:49,875 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:24:50,748 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1372#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~i~0#1|) (< 2147483647 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~sum~0#1|)) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:24:50,748 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:24:50,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:24:50,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 17] total 47 [2021-11-25 18:24:50,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228208338] [2021-11-25 18:24:50,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:24:50,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:24:50,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:24:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:24:50,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=2583, Unknown=24, NotChecked=0, Total=2970 [2021-11-25 18:24:50,752 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 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 18:25:54,097 WARN L227 SmtUtils]: Spent 24.69s on a formula simplification. DAG size of input: 154 DAG size of output: 140 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:25:56,112 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)))) (let ((.cse1 (+ (div (+ .cse2 2147483639) 2) 1)) (.cse13 (* 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse14 (* |c_ULTIMATE.start_main_~i~0#1| (- 1)))) (and (<= .cse0 (div .cse1 2)) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse2 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (<= (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483647) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse12 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse8 (+ .cse12 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse7 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse5 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse3 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse4 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse11 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72|)) (.cse9 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse6 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse10 (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|))) (or (<= (+ .cse3 |c_ULTIMATE.start_main_#t~post4#1| 15 .cse4) (+ .cse5 .cse6)) (<= (+ 2 .cse7) .cse8) (<= (+ .cse9 .cse6 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1| .cse10) (+ .cse3 2147483638 .cse4)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) (+ 2147483643 .cse11)) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= (+ 2 |c_ULTIMATE.start_main_#t~post4#1|) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ .cse11 7 .cse9 .cse6 .cse10) (+ .cse3 .cse4)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (< .cse8 .cse7) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| .cse12 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| 10) 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ .cse11 .cse9 .cse5 |c_ULTIMATE.start_main_#t~post4#1| 17) 0) (<= 0 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse11 .cse9 9 .cse5)) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| |c_ULTIMATE.start_main_#t~post4#1| 1) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| (- 5)) (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483630) 2)) (<= (+ .cse3 .cse4 4) (+ .cse11 .cse9 .cse6 .cse10)))))) (<= .cse13 .cse1) (<= (+ |c_ULTIMATE.start_main_~sum~0#1| .cse13) 2147483646) (<= |c_ULTIMATE.start_main_~i~0#1| (div (+ .cse14 .cse2 2147483644) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse15 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse23 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse17 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse19 (+ .cse17 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse18 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse16 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse21 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse22 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse20 (+ .cse15 .cse23 |c_ULTIMATE.start_main_~sum~0#1| (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)))) (or (<= 2147483636 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse15 .cse16 |c_ULTIMATE.start_main_~sum~0#1|)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| .cse17 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) 0) (<= (+ 2 .cse18) .cse19) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (<= (+ .cse15 .cse16 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (< .cse19 .cse18) (<= .cse20 (+ .cse21 .cse22 2147483639)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ .cse21 14 |c_ULTIMATE.start_main_#t~post4#1| .cse22) (+ .cse16 .cse23)) (<= (+ 2147483649 .cse21 .cse22) .cse20))))) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483646) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| 5) |c_ULTIMATE.start_main_~sum~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= .cse0 (div (+ .cse2 2147483646) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~i~0#1_50_285| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse24 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse34 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse26 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse28 (+ .cse26 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse27 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse32 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403|)) (.cse33 (* 5 |aux_div_v_ULTIMATE.start_main_~i~0#1_50_285|)) (.cse25 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse30 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse31 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse29 (+ .cse24 .cse34 |c_ULTIMATE.start_main_~sum~0#1| (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)))) (or (<= 2147483636 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse24 .cse25 |c_ULTIMATE.start_main_~sum~0#1|)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| .cse26 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) 0) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ 2 .cse27) .cse28) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= (+ .cse24 .cse25 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (< .cse28 .cse27) (<= .cse29 (+ .cse30 .cse31 2147483639)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= (+ .cse32 5) .cse33) (<= |aux_div_v_ULTIMATE.start_main_~i~0#1_50_285| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (<= (+ 5 .cse34) .cse32) (<= (+ .cse33 5) .cse34) (<= (+ .cse30 14 |c_ULTIMATE.start_main_#t~post4#1| .cse31) (+ .cse25 .cse34)) (<= (+ 2147483649 .cse30 .cse31) .cse29))))) (<= |c_ULTIMATE.start_main_~i~0#1| (div (+ (- 1) (div (+ .cse14 .cse2 2147483639) 2)) 2))))) is different from false [2021-11-25 18:26:07,003 WARN L227 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 118 DAG size of output: 108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:26:49,534 WARN L227 SmtUtils]: Spent 11.19s on a formula simplification. DAG size of input: 99 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:26:51,543 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse1 (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)))) (and (<= .cse0 (div (+ (div (+ .cse1 2147483639) 2) 1) 2)) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse1 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse2 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse10 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse4 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse6 (+ .cse4 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse5 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse3 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse8 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse9 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse7 (+ .cse2 .cse10 |c_ULTIMATE.start_main_~sum~0#1| (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)))) (or (<= 2147483636 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse2 .cse3 |c_ULTIMATE.start_main_~sum~0#1|)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| .cse4 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) 0) (<= (+ 2 .cse5) .cse6) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (<= (+ .cse2 .cse3 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (< .cse6 .cse5) (<= .cse7 (+ .cse8 .cse9 2147483639)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ .cse8 14 |c_ULTIMATE.start_main_#t~post4#1| .cse9) (+ .cse3 .cse10)) (<= (+ 2147483649 .cse8 .cse9) .cse7))))) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483646) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| 5) |c_ULTIMATE.start_main_~sum~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= .cse0 (div (+ .cse1 2147483646) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~i~0#1_50_285| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse11 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse21 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse13 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse15 (+ .cse13 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse14 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse19 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403|)) (.cse20 (* 5 |aux_div_v_ULTIMATE.start_main_~i~0#1_50_285|)) (.cse12 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse17 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse18 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse16 (+ .cse11 .cse21 |c_ULTIMATE.start_main_~sum~0#1| (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)))) (or (<= 2147483636 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse11 .cse12 |c_ULTIMATE.start_main_~sum~0#1|)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| .cse13 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) 0) (<= |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ 2 .cse14) .cse15) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= (+ .cse11 .cse12 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (< .cse15 .cse14) (<= .cse16 (+ .cse17 .cse18 2147483639)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= (+ .cse19 5) .cse20) (<= |aux_div_v_ULTIMATE.start_main_~i~0#1_50_285| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (<= (+ 5 .cse21) .cse19) (<= (+ .cse20 5) .cse21) (<= (+ .cse17 14 |c_ULTIMATE.start_main_#t~post4#1| .cse18) (+ .cse12 .cse21)) (<= (+ 2147483649 .cse17 .cse18) .cse16))))))) is different from false [2021-11-25 18:27:42,080 WARN L227 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 43 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 18:27:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:27:42,745 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-25 18:27:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-25 18:27:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 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 39 [2021-11-25 18:27:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:27:42,747 INFO L225 Difference]: With dead ends: 81 [2021-11-25 18:27:42,747 INFO L226 Difference]: Without dead ends: 80 [2021-11-25 18:27:42,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 226.2s TimeCoverageRelationStatistics Valid=912, Invalid=4579, Unknown=67, NotChecked=294, Total=5852 [2021-11-25 18:27:42,751 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:27:42,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 2 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 167 Invalid, 0 Unknown, 228 Unchecked, 0.2s Time] [2021-11-25 18:27:42,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-25 18:27:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-25 18:27:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 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 18:27:42,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-11-25 18:27:42,761 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 39 [2021-11-25 18:27:42,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:27:42,761 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-11-25 18:27:42,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.4468085106382977) internal successors, (115), 48 states have internal predecessors, (115), 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 18:27:42,762 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-11-25 18:27:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 18:27:42,764 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:27:42,765 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1] [2021-11-25 18:27:42,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:27:42,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:27:42,979 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-25 18:27:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:27:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1923662644, now seen corresponding path program 4 times [2021-11-25 18:27:42,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:27:42,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547178223] [2021-11-25 18:27:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:27:42,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:27:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:43,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:27:43,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547178223] [2021-11-25 18:27:43,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547178223] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:27:43,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713421966] [2021-11-25 18:27:43,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:27:43,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:27:43,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:27:43,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:27:43,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce806087-3cd0-41df-badc-bce6a342eb0e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:27:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:27:43,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:27:43,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:27:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:27:45,522 INFO L328 TraceCheckSpWp]: Computing backward predicates...