./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark41_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_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/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_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/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_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/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 e8c2a2f5606e46c1a328e1728dc6cdf6823e5c50ed56fab8310a8cb7bd30fe62 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:26:03,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:26:03,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:26:03,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:26:03,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:26:03,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:26:03,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:26:03,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:26:03,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:26:03,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:26:03,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:26:03,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:26:03,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:26:03,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:26:03,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:26:03,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:26:03,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:26:03,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:26:03,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:26:03,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:26:03,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:26:03,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:26:03,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:26:03,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:26:03,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:26:03,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:26:03,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:26:03,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:26:03,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:26:03,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:26:03,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:26:03,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:26:03,823 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:26:03,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:26:03,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:26:03,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:26:03,826 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:26:03,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:26:03,827 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:26:03,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:26:03,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:26:03,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-25 19:26:03,879 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:26:03,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:26:03,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:26:03,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:26:03,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:26:03,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:26:03,888 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:26:03,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:26:03,888 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:26:03,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:26:03,890 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:26:03,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:26:03,890 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:26:03,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:26:03,891 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:26:03,891 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:26:03,891 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:26:03,891 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:26:03,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:26:03,893 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:26:03,893 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 19:26:03,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:26:03,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:26:03,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:26:03,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:26:03,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:26:03,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:26:03,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 19:26:03,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:26:03,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:26:03,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:26:03,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:26:03,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:26:03,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:26:03,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:03,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:26:03,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:26:03,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:26:03,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:26:03,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:26:03,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:26:03,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:26:03,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:26:03,900 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_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8c2a2f5606e46c1a328e1728dc6cdf6823e5c50ed56fab8310a8cb7bd30fe62 [2021-11-25 19:26:04,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:26:04,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:26:04,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:26:04,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:26:04,221 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:26:04,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i [2021-11-25 19:26:04,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/data/aa679a33f/8826a578e1634b1f88c519b3ad320077/FLAG9f6653ce4 [2021-11-25 19:26:04,781 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:26:04,782 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i [2021-11-25 19:26:04,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/data/aa679a33f/8826a578e1634b1f88c519b3ad320077/FLAG9f6653ce4 [2021-11-25 19:26:05,144 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/data/aa679a33f/8826a578e1634b1f88c519b3ad320077 [2021-11-25 19:26:05,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:26:05,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:26:05,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:05,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:26:05,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:26:05,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae35d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05, skipping insertion in model container [2021-11-25 19:26:05,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:26:05,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:26:05,349 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_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i[873,886] [2021-11-25 19:26:05,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:05,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:26:05,376 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_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/sv-benchmarks/c/loop-zilu/benchmark41_conjunctive.i[873,886] [2021-11-25 19:26:05,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:26:05,402 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:26:05,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05 WrapperNode [2021-11-25 19:26:05,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:26:05,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:05,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:26:05,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:26:05,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,439 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2021-11-25 19:26:05,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:26:05,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:26:05,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:26:05,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:26:05,449 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,458 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:26:05,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:26:05,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:26:05,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:26:05,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (1/1) ... [2021-11-25 19:26:05,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:26:05,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:05,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:26:05,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:26:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:26:05,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:26:05,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:26:05,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:26:05,598 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:26:05,599 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:26:05,812 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:26:05,847 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:26:05,847 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:26:05,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:26:05 BoogieIcfgContainer [2021-11-25 19:26:05,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:26:05,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:26:05,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:26:05,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:26:05,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:26:05" (1/3) ... [2021-11-25 19:26:05,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f57ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:26:05, skipping insertion in model container [2021-11-25 19:26:05,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:26:05" (2/3) ... [2021-11-25 19:26:05,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f57ac4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:26:05, skipping insertion in model container [2021-11-25 19:26:05,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:26:05" (3/3) ... [2021-11-25 19:26:05,871 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark41_conjunctive.i [2021-11-25 19:26:05,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:26:05,876 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-25 19:26:05,922 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:26:05,930 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 19:26:05,930 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-25 19:26:05,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.8125) internal successors, (29), 26 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 19:26:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 19:26:05,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:05,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 19:26:05,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:05,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2658639, now seen corresponding path program 1 times [2021-11-25 19:26:05,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:05,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235511640] [2021-11-25 19:26:05,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:05,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:06,195 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 19:26:06,196 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:06,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235511640] [2021-11-25 19:26:06,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235511640] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:06,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:06,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:26:06,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271681489] [2021-11-25 19:26:06,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:06,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:06,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:06,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:06,259 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.8125) internal successors, (29), 26 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) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:06,379 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-11-25 19:26:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:26:06,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 19:26:06,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:06,390 INFO L225 Difference]: With dead ends: 44 [2021-11-25 19:26:06,390 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 19:26:06,394 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 19:26:06,402 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:06,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 38 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:06,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 19:26:06,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2021-11-25 19:26:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.6875) internal successors, (27), 25 states have internal predecessors, (27), 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 19:26:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-11-25 19:26:06,441 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2021-11-25 19:26:06,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:06,441 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-11-25 19:26:06,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:06,442 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-11-25 19:26:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:26:06,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:06,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:26:06,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:26:06,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash 82417859, now seen corresponding path program 1 times [2021-11-25 19:26:06,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:06,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260289252] [2021-11-25 19:26:06,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:06,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:06,515 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 19:26:06,516 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:06,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260289252] [2021-11-25 19:26:06,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260289252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:06,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:06,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:06,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973687089] [2021-11-25 19:26:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:06,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:06,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:06,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:06,521 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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 19:26:06,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:06,580 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-11-25 19:26:06,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:26:06,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 19:26:06,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:06,584 INFO L225 Difference]: With dead ends: 26 [2021-11-25 19:26:06,584 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:26:06,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:26:06,589 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:06,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:26:06,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 19:26:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.625) internal successors, (26), 24 states have internal predecessors, (26), 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 19:26:06,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-11-25 19:26:06,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 5 [2021-11-25 19:26:06,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:06,597 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-11-25 19:26:06,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 19:26:06,598 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-11-25 19:26:06,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 19:26:06,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:06,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 19:26:06,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:26:06,599 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash 82461648, now seen corresponding path program 1 times [2021-11-25 19:26:06,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:06,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631741962] [2021-11-25 19:26:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:06,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:06,674 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 19:26:06,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:06,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631741962] [2021-11-25 19:26:06,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631741962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:06,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:06,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:06,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020176658] [2021-11-25 19:26:06,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:06,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:06,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:06,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:06,679 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) 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 19:26:06,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:06,738 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-11-25 19:26:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:26:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 19:26:06,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:06,740 INFO L225 Difference]: With dead ends: 35 [2021-11-25 19:26:06,741 INFO L226 Difference]: Without dead ends: 34 [2021-11-25 19:26:06,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:26:06,746 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:06,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 33 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-25 19:26:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-11-25 19:26:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:06,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-11-25 19:26:06,758 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2021-11-25 19:26:06,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:06,759 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-11-25 19:26:06,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) 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 19:26:06,760 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-11-25 19:26:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:26:06,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:06,761 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:26:06,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:26:06,762 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1740013615, now seen corresponding path program 1 times [2021-11-25 19:26:06,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:06,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147306946] [2021-11-25 19:26:06,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:06,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:06,818 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 19:26:06,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:06,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147306946] [2021-11-25 19:26:06,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147306946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:06,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:06,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:26:06,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951320037] [2021-11-25 19:26:06,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:06,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:06,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:06,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:06,826 INFO L87 Difference]: Start difference. First operand 27 states and 28 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 19:26:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:06,886 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-11-25 19:26:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:26:06,888 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 19:26:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:06,890 INFO L225 Difference]: With dead ends: 38 [2021-11-25 19:26:06,890 INFO L226 Difference]: Without dead ends: 37 [2021-11-25 19:26:06,892 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 19:26:06,899 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:06,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:06,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-25 19:26:06,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-11-25 19:26:06,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.5) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:06,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-25 19:26:06,910 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2021-11-25 19:26:06,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:06,911 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-25 19:26:06,911 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 19:26:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-25 19:26:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 19:26:06,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:06,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 19:26:06,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:26:06,913 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1738656139, now seen corresponding path program 1 times [2021-11-25 19:26:06,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:06,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135776926] [2021-11-25 19:26:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:06,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:06,966 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 19:26:06,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:06,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135776926] [2021-11-25 19:26:06,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135776926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:06,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:06,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:06,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911119217] [2021-11-25 19:26:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:06,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:06,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:06,970 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:07,018 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-11-25 19:26:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:26:07,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 19:26:07,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:07,019 INFO L225 Difference]: With dead ends: 31 [2021-11-25 19:26:07,019 INFO L226 Difference]: Without dead ends: 30 [2021-11-25 19:26:07,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:26:07,020 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:07,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:07,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-25 19:26:07,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-25 19:26:07,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 29 states have internal predecessors, (31), 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 19:26:07,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-25 19:26:07,026 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 6 [2021-11-25 19:26:07,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:07,026 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-25 19:26:07,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,027 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-25 19:26:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:26:07,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:07,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:07,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 19:26:07,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:07,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:07,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1894152837, now seen corresponding path program 1 times [2021-11-25 19:26:07,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:07,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936069041] [2021-11-25 19:26:07,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,060 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 19:26:07,061 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936069041] [2021-11-25 19:26:07,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936069041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:07,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:07,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 19:26:07,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985541215] [2021-11-25 19:26:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:07,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:07,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:07,063 INFO L87 Difference]: Start difference. First operand 30 states and 31 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 19:26:07,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:07,088 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-25 19:26:07,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:26:07,090 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 19:26:07,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:07,091 INFO L225 Difference]: With dead ends: 30 [2021-11-25 19:26:07,092 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 19:26:07,092 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 19:26:07,093 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:07,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:07,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 19:26:07,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-25 19:26:07,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-25 19:26:07,103 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 7 [2021-11-25 19:26:07,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:07,103 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-25 19:26:07,104 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 19:26:07,104 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-25 19:26:07,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 19:26:07,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:07,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:07,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 19:26:07,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:07,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:07,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1936234610, now seen corresponding path program 1 times [2021-11-25 19:26:07,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:07,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558660104] [2021-11-25 19:26:07,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,156 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 19:26:07,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:07,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558660104] [2021-11-25 19:26:07,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558660104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:07,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:07,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:07,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248337526] [2021-11-25 19:26:07,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:07,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:07,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:07,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:07,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:07,159 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 19:26:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:07,217 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-11-25 19:26:07,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:26:07,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 19:26:07,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:07,219 INFO L225 Difference]: With dead ends: 33 [2021-11-25 19:26:07,219 INFO L226 Difference]: Without dead ends: 32 [2021-11-25 19:26:07,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:26:07,220 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:07,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-25 19:26:07,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-11-25 19:26:07,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 29 states have internal predecessors, (31), 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 19:26:07,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2021-11-25 19:26:07,233 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 7 [2021-11-25 19:26:07,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:07,234 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2021-11-25 19:26:07,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 19:26:07,234 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2021-11-25 19:26:07,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:26:07,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:07,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:07,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 19:26:07,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1410804141, now seen corresponding path program 1 times [2021-11-25 19:26:07,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:07,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24672528] [2021-11-25 19:26:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,289 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 19:26:07,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:07,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24672528] [2021-11-25 19:26:07,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24672528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:07,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:07,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 19:26:07,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714275278] [2021-11-25 19:26:07,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:07,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:07,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:07,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:07,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:26:07,294 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:07,310 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2021-11-25 19:26:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:07,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:26:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:07,311 INFO L225 Difference]: With dead ends: 30 [2021-11-25 19:26:07,311 INFO L226 Difference]: Without dead ends: 29 [2021-11-25 19:26:07,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 19:26:07,312 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:07,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-25 19:26:07,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-25 19:26:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-11-25 19:26:07,316 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 8 [2021-11-25 19:26:07,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:07,317 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-11-25 19:26:07,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-11-25 19:26:07,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 19:26:07,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:07,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:07,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:26:07,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:07,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:07,318 INFO L85 PathProgramCache]: Analyzing trace with hash -106269161, now seen corresponding path program 1 times [2021-11-25 19:26:07,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:07,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022604387] [2021-11-25 19:26:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,341 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 19:26:07,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:07,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022604387] [2021-11-25 19:26:07,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022604387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:07,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:07,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:07,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973971891] [2021-11-25 19:26:07,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:07,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:26:07,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:07,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:26:07,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:26:07,344 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:07,377 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-25 19:26:07,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:26:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 19:26:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:07,378 INFO L225 Difference]: With dead ends: 31 [2021-11-25 19:26:07,378 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:26:07,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:26:07,379 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 28 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:07,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 14 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:07,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:26:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 19:26:07,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 24 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 19:26:07,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-11-25 19:26:07,382 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2021-11-25 19:26:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:07,383 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-11-25 19:26:07,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-11-25 19:26:07,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-25 19:26:07,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:07,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:07,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 19:26:07,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:07,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash -785255353, now seen corresponding path program 1 times [2021-11-25 19:26:07,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:07,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134653998] [2021-11-25 19:26:07,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,402 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 19:26:07,402 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:07,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134653998] [2021-11-25 19:26:07,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134653998] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:07,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:07,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:26:07,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000267247] [2021-11-25 19:26:07,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:07,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 19:26:07,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:07,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 19:26:07,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 19:26:07,404 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:07,416 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-11-25 19:26:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 19:26:07,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-25 19:26:07,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:07,417 INFO L225 Difference]: With dead ends: 29 [2021-11-25 19:26:07,417 INFO L226 Difference]: Without dead ends: 28 [2021-11-25 19:26:07,417 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 19:26:07,418 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:07,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:07,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-25 19:26:07,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-25 19:26:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-11-25 19:26:07,422 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 9 [2021-11-25 19:26:07,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:07,422 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-11-25 19:26:07,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:07,422 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-11-25 19:26:07,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:26:07,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:07,423 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:07,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 19:26:07,423 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:07,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1283851337, now seen corresponding path program 1 times [2021-11-25 19:26:07,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:07,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374975368] [2021-11-25 19:26:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,459 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 19:26:07,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:07,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374975368] [2021-11-25 19:26:07,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374975368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:07,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893378615] [2021-11-25 19:26:07,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:07,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:07,462 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:07,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:26:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:07,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:26:07,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:07,572 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 19:26:07,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:07,628 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 19:26:07,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893378615] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:07,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1985720854] [2021-11-25 19:26:07,646 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:07,646 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:07,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:07,656 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:07,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:08,219 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:09,206 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '801#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:09,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:09,207 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:09,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-25 19:26:09,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127967758] [2021-11-25 19:26:09,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:09,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:26:09,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:26:09,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:26:09,209 INFO L87 Difference]: Start difference. First operand 28 states and 28 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 19:26:09,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:09,343 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2021-11-25 19:26:09,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:26:09,344 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 19:26:09,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:09,345 INFO L225 Difference]: With dead ends: 77 [2021-11-25 19:26:09,345 INFO L226 Difference]: Without dead ends: 76 [2021-11-25 19:26:09,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:26:09,346 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 66 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:09,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 70 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:09,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-25 19:26:09,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 44. [2021-11-25 19:26:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 43 states have internal predecessors, (51), 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 19:26:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-11-25 19:26:09,351 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 11 [2021-11-25 19:26:09,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:09,351 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-11-25 19:26:09,351 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 19:26:09,351 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-11-25 19:26:09,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 19:26:09,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:09,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:09,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:26:09,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:09,553 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:09,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1144729622, now seen corresponding path program 1 times [2021-11-25 19:26:09,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:09,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904239943] [2021-11-25 19:26:09,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:09,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:09,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:09,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904239943] [2021-11-25 19:26:09,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904239943] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:09,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246596890] [2021-11-25 19:26:09,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:09,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:09,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:09,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:26:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:09,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:26:09,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:09,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:09,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246596890] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:09,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1642819243] [2021-11-25 19:26:09,810 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:26:09,810 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:09,811 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:09,811 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:09,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:10,230 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:11,556 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1029#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:11,557 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:11,557 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:11,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2021-11-25 19:26:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495427163] [2021-11-25 19:26:11,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:11,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 19:26:11,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 19:26:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:26:11,559 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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 19:26:11,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:11,689 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-11-25 19:26:11,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:26:11,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 19:26:11,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:11,690 INFO L225 Difference]: With dead ends: 57 [2021-11-25 19:26:11,690 INFO L226 Difference]: Without dead ends: 56 [2021-11-25 19:26:11,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:26:11,691 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:11,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 46 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-25 19:26:11,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-11-25 19:26:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.358974358974359) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-11-25 19:26:11,696 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2021-11-25 19:26:11,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:11,697 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-11-25 19:26:11,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 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 19:26:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-25 19:26:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:26:11,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:11,698 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:11,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:11,914 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:11,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:11,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1125522507, now seen corresponding path program 1 times [2021-11-25 19:26:11,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:11,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38667553] [2021-11-25 19:26:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:11,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:11,962 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 19:26:11,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:11,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38667553] [2021-11-25 19:26:11,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38667553] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:11,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982112684] [2021-11-25 19:26:11,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:11,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:11,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:11,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:11,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:26:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:12,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:26:12,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:12,049 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 19:26:12,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:12,105 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 19:26:12,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982112684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:12,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1170255142] [2021-11-25 19:26:12,107 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:12,108 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:12,108 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:12,108 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:12,108 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:12,498 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:13,347 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1245#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:13,347 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:13,347 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:13,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-25 19:26:13,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238710469] [2021-11-25 19:26:13,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:13,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 19:26:13,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:13,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 19:26:13,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:26:13,349 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 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 19:26:13,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:13,464 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2021-11-25 19:26:13,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 19:26:13,465 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 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 13 [2021-11-25 19:26:13,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:13,465 INFO L225 Difference]: With dead ends: 75 [2021-11-25 19:26:13,466 INFO L226 Difference]: Without dead ends: 74 [2021-11-25 19:26:13,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-11-25 19:26:13,467 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:13,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 61 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:13,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-25 19:26:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 48. [2021-11-25 19:26:13,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 47 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:13,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-11-25 19:26:13,471 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 13 [2021-11-25 19:26:13,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:13,472 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-11-25 19:26:13,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 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 19:26:13,472 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-11-25 19:26:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 19:26:13,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:13,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:13,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:13,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 19:26:13,673 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:13,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1126879983, now seen corresponding path program 1 times [2021-11-25 19:26:13,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:13,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484774262] [2021-11-25 19:26:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:13,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:13,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:13,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484774262] [2021-11-25 19:26:13,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484774262] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:13,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:26:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688097502] [2021-11-25 19:26:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:13,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:26:13,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:26:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:26:13,722 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 19:26:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:13,780 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-11-25 19:26:13,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:26:13,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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) Word has length 13 [2021-11-25 19:26:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:13,781 INFO L225 Difference]: With dead ends: 48 [2021-11-25 19:26:13,781 INFO L226 Difference]: Without dead ends: 47 [2021-11-25 19:26:13,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:26:13,782 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:13,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 32 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:13,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-25 19:26:13,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-25 19:26:13,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 46 states have internal predecessors, (52), 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 19:26:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 52 transitions. [2021-11-25 19:26:13,785 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 52 transitions. Word has length 13 [2021-11-25 19:26:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:13,785 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 52 transitions. [2021-11-25 19:26:13,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 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 19:26:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 52 transitions. [2021-11-25 19:26:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 19:26:13,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:13,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:13,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 19:26:13,786 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash 573541176, now seen corresponding path program 1 times [2021-11-25 19:26:13,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:13,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694428556] [2021-11-25 19:26:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:13,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:13,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:26:13,824 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:13,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694428556] [2021-11-25 19:26:13,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694428556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:26:13,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:26:13,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:26:13,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113706126] [2021-11-25 19:26:13,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:13,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:26:13,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:13,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:26:13,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:26:13,826 INFO L87 Difference]: Start difference. First operand 47 states and 52 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 19:26:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:13,882 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-25 19:26:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:26:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) Word has length 14 [2021-11-25 19:26:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:13,884 INFO L225 Difference]: With dead ends: 47 [2021-11-25 19:26:13,884 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 19:26:13,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:26:13,885 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:13,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:13,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 19:26:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-25 19:26:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2439024390243902) internal successors, (51), 45 states have internal predecessors, (51), 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 19:26:13,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-11-25 19:26:13,889 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 14 [2021-11-25 19:26:13,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:13,890 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-11-25 19:26:13,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 19:26:13,890 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-11-25 19:26:13,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 19:26:13,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:13,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:26:13,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 19:26:13,891 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:13,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:13,892 INFO L85 PathProgramCache]: Analyzing trace with hash 599907345, now seen corresponding path program 1 times [2021-11-25 19:26:13,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:13,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534050967] [2021-11-25 19:26:13,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:13,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:13,961 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:13,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534050967] [2021-11-25 19:26:13,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534050967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:13,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819403493] [2021-11-25 19:26:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:13,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:13,966 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:13,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:26:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:13,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 19:26:13,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:14,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 19:26:14,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819403493] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:14,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:26:14,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 16 [2021-11-25 19:26:14,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044247250] [2021-11-25 19:26:14,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:26:14,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:26:14,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:14,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:26:14,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-11-25 19:26:14,233 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 19:26:14,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:14,298 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2021-11-25 19:26:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:26:14,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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) Word has length 15 [2021-11-25 19:26:14,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:14,299 INFO L225 Difference]: With dead ends: 46 [2021-11-25 19:26:14,299 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 19:26:14,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:26:14,301 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:14,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 5 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 19:26:14,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-25 19:26:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 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 19:26:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-11-25 19:26:14,310 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2021-11-25 19:26:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:14,311 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-11-25 19:26:14,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 19:26:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-11-25 19:26:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 19:26:14,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:14,312 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-25 19:26:14,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-25 19:26:14,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 19:26:14,519 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:14,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash -368620147, now seen corresponding path program 1 times [2021-11-25 19:26:14,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:14,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934383845] [2021-11-25 19:26:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:14,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:14,567 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:14,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934383845] [2021-11-25 19:26:14,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934383845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:14,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050514134] [2021-11-25 19:26:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:14,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:14,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:14,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:14,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:26:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:14,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 19:26:14,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:14,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:14,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050514134] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:14,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1048554687] [2021-11-25 19:26:14,700 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:14,700 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:14,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:14,700 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:14,701 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:15,067 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:15,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1927#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:15,776 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:15,776 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:15,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-11-25 19:26:15,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815599098] [2021-11-25 19:26:15,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:15,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:26:15,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:15,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:26:15,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:26:15,778 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 19:26:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:15,798 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2021-11-25 19:26:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:26:15,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 16 [2021-11-25 19:26:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:15,799 INFO L225 Difference]: With dead ends: 47 [2021-11-25 19:26:15,799 INFO L226 Difference]: Without dead ends: 46 [2021-11-25 19:26:15,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-25 19:26:15,800 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 3 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:15,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 43 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-25 19:26:15,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2021-11-25 19:26:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 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 19:26:15,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-11-25 19:26:15,804 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 16 [2021-11-25 19:26:15,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:15,804 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-11-25 19:26:15,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 19:26:15,805 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-11-25 19:26:15,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:26:15,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:15,806 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2021-11-25 19:26:15,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:16,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:16,022 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:16,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash 857604822, now seen corresponding path program 2 times [2021-11-25 19:26:16,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:16,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077388413] [2021-11-25 19:26:16,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:16,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:16,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077388413] [2021-11-25 19:26:16,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077388413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:16,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637577027] [2021-11-25 19:26:16,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:26:16,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:16,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:16,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:16,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:26:16,162 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 19:26:16,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:16,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-25 19:26:16,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:16,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:16,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637577027] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:16,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [188408060] [2021-11-25 19:26:16,571 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:26:16,571 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:16,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:16,572 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:16,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:16,940 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:17,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2217#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:17,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:17,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:17,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 30 [2021-11-25 19:26:17,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416428938] [2021-11-25 19:26:17,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:17,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-25 19:26:17,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:17,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-25 19:26:17,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2021-11-25 19:26:17,967 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 31 states have internal predecessors, (76), 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 19:26:18,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:18,267 INFO L93 Difference]: Finished difference Result 76 states and 79 transitions. [2021-11-25 19:26:18,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:26:18,267 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 31 states have internal predecessors, (76), 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 19:26:18,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:18,268 INFO L225 Difference]: With dead ends: 76 [2021-11-25 19:26:18,268 INFO L226 Difference]: Without dead ends: 67 [2021-11-25 19:26:18,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=404, Invalid=2676, Unknown=0, NotChecked=0, Total=3080 [2021-11-25 19:26:18,270 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 76 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:18,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 96 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-11-25 19:26:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2021-11-25 19:26:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 57 states have internal predecessors, (64), 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 19:26:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2021-11-25 19:26:18,274 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 26 [2021-11-25 19:26:18,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:18,274 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2021-11-25 19:26:18,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.533333333333333) internal successors, (76), 31 states have internal predecessors, (76), 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 19:26:18,275 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2021-11-25 19:26:18,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:26:18,276 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:18,276 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1, 1] [2021-11-25 19:26:18,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:18,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 19:26:18,482 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -871110961, now seen corresponding path program 2 times [2021-11-25 19:26:18,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:18,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323355877] [2021-11-25 19:26:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:18,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:18,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323355877] [2021-11-25 19:26:18,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323355877] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:18,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099352208] [2021-11-25 19:26:18,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:26:18,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:18,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:18,602 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:18,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:26:18,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:26:18,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:18,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:26:18,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:18,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:18,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099352208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [890760190] [2021-11-25 19:26:18,881 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:18,881 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:18,882 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:18,882 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:18,882 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:19,164 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:19,539 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2614#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:19,539 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:19,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:19,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-25 19:26:19,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652207166] [2021-11-25 19:26:19,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:19,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 19:26:19,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 19:26:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:26:19,542 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 22 states, 21 states have (on average 3.0) internal successors, (63), 22 states have internal predecessors, (63), 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 19:26:19,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:19,738 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2021-11-25 19:26:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:26:19,739 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 22 states have internal predecessors, (63), 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 32 [2021-11-25 19:26:19,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:19,739 INFO L225 Difference]: With dead ends: 101 [2021-11-25 19:26:19,740 INFO L226 Difference]: Without dead ends: 100 [2021-11-25 19:26:19,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=337, Invalid=1303, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 19:26:19,741 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 95 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:19,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 105 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:19,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-25 19:26:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2021-11-25 19:26:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 79 states have internal predecessors, (93), 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 19:26:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2021-11-25 19:26:19,746 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 32 [2021-11-25 19:26:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:19,747 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2021-11-25 19:26:19,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0) internal successors, (63), 22 states have internal predecessors, (63), 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 19:26:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2021-11-25 19:26:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:26:19,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:19,748 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1] [2021-11-25 19:26:19,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:19,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:19,966 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:19,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash 380990801, now seen corresponding path program 2 times [2021-11-25 19:26:19,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:19,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404643855] [2021-11-25 19:26:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:19,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:20,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:20,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404643855] [2021-11-25 19:26:20,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404643855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:20,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868672518] [2021-11-25 19:26:20,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:26:20,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:20,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:20,094 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:20,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:26:20,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:26:20,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:20,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 19:26:20,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:20,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:20,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868672518] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:20,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371941879] [2021-11-25 19:26:20,396 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:20,396 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:20,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:20,396 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:20,397 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:20,690 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:21,436 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3066#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:21,436 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:21,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:21,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-25 19:26:21,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867935783] [2021-11-25 19:26:21,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:21,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 19:26:21,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:21,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 19:26:21,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:26:21,438 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 22 states have internal predecessors, (67), 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 19:26:21,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:21,604 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2021-11-25 19:26:21,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 19:26:21,604 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 22 states have internal predecessors, (67), 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 34 [2021-11-25 19:26:21,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:21,605 INFO L225 Difference]: With dead ends: 98 [2021-11-25 19:26:21,605 INFO L226 Difference]: Without dead ends: 97 [2021-11-25 19:26:21,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=335, Invalid=1305, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 19:26:21,607 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 107 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:21,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 97 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-25 19:26:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2021-11-25 19:26:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 81 states have internal predecessors, (90), 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 19:26:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 90 transitions. [2021-11-25 19:26:21,612 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 90 transitions. Word has length 34 [2021-11-25 19:26:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:21,612 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 90 transitions. [2021-11-25 19:26:21,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 22 states have internal predecessors, (67), 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 19:26:21,613 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 90 transitions. [2021-11-25 19:26:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-25 19:26:21,614 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:21,614 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1] [2021-11-25 19:26:21,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:21,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:21,830 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:21,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:21,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1501557049, now seen corresponding path program 2 times [2021-11-25 19:26:21,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:21,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640981668] [2021-11-25 19:26:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:21,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:21,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:21,890 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:21,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:21,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640981668] [2021-11-25 19:26:21,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640981668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:21,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994002502] [2021-11-25 19:26:21,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:26:21,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:21,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:21,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:21,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 19:26:21,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 19:26:21,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:21,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 19:26:21,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:22,006 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:22,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:22,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994002502] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:22,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [703688936] [2021-11-25 19:26:22,102 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:22,102 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:22,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:22,103 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:22,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:22,379 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:23,028 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3525#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:23,028 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:23,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:23,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-11-25 19:26:23,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812655107] [2021-11-25 19:26:23,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:23,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:26:23,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:26:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:26:23,030 INFO L87 Difference]: Start difference. First operand 82 states and 90 transitions. Second operand has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 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 19:26:23,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:23,068 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2021-11-25 19:26:23,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:26:23,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 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 37 [2021-11-25 19:26:23,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:23,069 INFO L225 Difference]: With dead ends: 95 [2021-11-25 19:26:23,069 INFO L226 Difference]: Without dead ends: 94 [2021-11-25 19:26:23,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:26:23,070 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:23,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 75 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:26:23,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-25 19:26:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2021-11-25 19:26:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 81 states have (on average 1.0864197530864197) internal successors, (88), 84 states have internal predecessors, (88), 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 19:26:23,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2021-11-25 19:26:23,074 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 37 [2021-11-25 19:26:23,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:23,075 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2021-11-25 19:26:23,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.636363636363637) internal successors, (73), 12 states have internal predecessors, (73), 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 19:26:23,075 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2021-11-25 19:26:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-25 19:26:23,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:23,076 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1] [2021-11-25 19:26:23,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:23,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:23,282 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:23,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:23,283 INFO L85 PathProgramCache]: Analyzing trace with hash -42452906, now seen corresponding path program 3 times [2021-11-25 19:26:23,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:23,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695736968] [2021-11-25 19:26:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:23,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:23,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695736968] [2021-11-25 19:26:23,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695736968] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:23,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507869300] [2021-11-25 19:26:23,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:26:23,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:23,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:23,465 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:23,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 19:26:23,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:26:23,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:23,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-25 19:26:23,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:23,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:24,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507869300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:24,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [204521876] [2021-11-25 19:26:24,472 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:26:24,472 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:24,472 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:24,472 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:24,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:24,781 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:25,936 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4117#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:25,936 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:25,936 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:25,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 62 [2021-11-25 19:26:25,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785291629] [2021-11-25 19:26:25,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:25,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-25 19:26:25,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:25,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-25 19:26:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=4777, Unknown=0, NotChecked=0, Total=5402 [2021-11-25 19:26:25,940 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 63 states, 62 states have (on average 2.5806451612903225) internal successors, (160), 63 states have internal predecessors, (160), 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 19:26:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:26,696 INFO L93 Difference]: Finished difference Result 146 states and 153 transitions. [2021-11-25 19:26:26,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-25 19:26:26,697 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.5806451612903225) internal successors, (160), 63 states have internal predecessors, (160), 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 54 [2021-11-25 19:26:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:26,698 INFO L225 Difference]: With dead ends: 146 [2021-11-25 19:26:26,698 INFO L226 Difference]: Without dead ends: 129 [2021-11-25 19:26:26,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4781 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1510, Invalid=9620, Unknown=0, NotChecked=0, Total=11130 [2021-11-25 19:26:26,702 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 254 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:26,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 125 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:26:26,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-11-25 19:26:26,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2021-11-25 19:26:26,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 113 states have internal predecessors, (126), 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 19:26:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 126 transitions. [2021-11-25 19:26:26,707 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 126 transitions. Word has length 54 [2021-11-25 19:26:26,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:26,707 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 126 transitions. [2021-11-25 19:26:26,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.5806451612903225) internal successors, (160), 63 states have internal predecessors, (160), 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 19:26:26,708 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 126 transitions. [2021-11-25 19:26:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-25 19:26:26,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:26,709 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1, 1] [2021-11-25 19:26:26,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:26,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:26,930 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1924812559, now seen corresponding path program 3 times [2021-11-25 19:26:26,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:26,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310127783] [2021-11-25 19:26:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:26,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:27,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310127783] [2021-11-25 19:26:27,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310127783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:27,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964448866] [2021-11-25 19:26:27,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:26:27,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:27,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:27,193 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:27,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 19:26:27,242 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:26:27,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:27,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:26:27,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:27,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:27,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964448866] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:27,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [425837927] [2021-11-25 19:26:27,900 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:27,900 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:27,900 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:27,901 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:27,901 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:28,171 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:28,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4968#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:28,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:28,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:28,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-25 19:26:28,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153533577] [2021-11-25 19:26:28,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:28,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-25 19:26:28,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:28,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-25 19:26:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=2391, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:26:28,986 INFO L87 Difference]: Start difference. First operand 114 states and 126 transitions. Second operand has 46 states, 45 states have (on average 3.2666666666666666) internal successors, (147), 46 states have internal predecessors, (147), 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 19:26:29,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:29,528 INFO L93 Difference]: Finished difference Result 209 states and 220 transitions. [2021-11-25 19:26:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 19:26:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.2666666666666666) internal successors, (147), 46 states have internal predecessors, (147), 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 74 [2021-11-25 19:26:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:29,530 INFO L225 Difference]: With dead ends: 209 [2021-11-25 19:26:29,530 INFO L226 Difference]: Without dead ends: 208 [2021-11-25 19:26:29,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1502 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1361, Invalid=4491, Unknown=0, NotChecked=0, Total=5852 [2021-11-25 19:26:29,532 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 241 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:29,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 174 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-25 19:26:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 164. [2021-11-25 19:26:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 160 states have (on average 1.20625) internal successors, (193), 163 states have internal predecessors, (193), 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 19:26:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 193 transitions. [2021-11-25 19:26:29,540 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 193 transitions. Word has length 74 [2021-11-25 19:26:29,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:29,540 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 193 transitions. [2021-11-25 19:26:29,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.2666666666666666) internal successors, (147), 46 states have internal predecessors, (147), 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 19:26:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 193 transitions. [2021-11-25 19:26:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 19:26:29,542 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:29,542 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1, 1] [2021-11-25 19:26:29,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-25 19:26:29,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-25 19:26:29,750 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1386033775, now seen corresponding path program 3 times [2021-11-25 19:26:29,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:29,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295401644] [2021-11-25 19:26:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:29,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:29,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295401644] [2021-11-25 19:26:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295401644] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162150313] [2021-11-25 19:26:29,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:26:29,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:29,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:29,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:29,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 19:26:30,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:26:30,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:30,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-25 19:26:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:30,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:30,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162150313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:30,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1072676044] [2021-11-25 19:26:30,640 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:30,640 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:30,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:30,640 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:30,640 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:30,889 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:31,813 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5936#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:31,813 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:31,813 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:31,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-25 19:26:31,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804466110] [2021-11-25 19:26:31,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:31,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-25 19:26:31,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:31,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-25 19:26:31,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=2391, Unknown=0, NotChecked=0, Total=2970 [2021-11-25 19:26:31,816 INFO L87 Difference]: Start difference. First operand 164 states and 193 transitions. Second operand has 46 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 46 states have internal predecessors, (151), 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 19:26:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:32,398 INFO L93 Difference]: Finished difference Result 200 states and 211 transitions. [2021-11-25 19:26:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-25 19:26:32,399 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 46 states have internal predecessors, (151), 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 76 [2021-11-25 19:26:32,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:32,401 INFO L225 Difference]: With dead ends: 200 [2021-11-25 19:26:32,401 INFO L226 Difference]: Without dead ends: 199 [2021-11-25 19:26:32,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1361, Invalid=4491, Unknown=0, NotChecked=0, Total=5852 [2021-11-25 19:26:32,404 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 203 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:32,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 175 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-11-25 19:26:32,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 166. [2021-11-25 19:26:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.1358024691358024) internal successors, (184), 165 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:26:32,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 184 transitions. [2021-11-25 19:26:32,411 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 184 transitions. Word has length 76 [2021-11-25 19:26:32,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:32,411 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 184 transitions. [2021-11-25 19:26:32,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.3555555555555556) internal successors, (151), 46 states have internal predecessors, (151), 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 19:26:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 184 transitions. [2021-11-25 19:26:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-25 19:26:32,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:32,413 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 1, 1, 1] [2021-11-25 19:26:32,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:32,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:32,630 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 483446407, now seen corresponding path program 3 times [2021-11-25 19:26:32,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111375886] [2021-11-25 19:26:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:32,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:32,759 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:32,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:32,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111375886] [2021-11-25 19:26:32,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111375886] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244399420] [2021-11-25 19:26:32,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:26:32,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:32,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:32,761 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:32,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 19:26:32,810 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:26:32,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:32,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 19:26:32,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:32,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:33,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244399420] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:33,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1796752810] [2021-11-25 19:26:33,257 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:33,257 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:33,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:33,257 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:33,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:33,502 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:34,189 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6893#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:34,189 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:34,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:34,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-11-25 19:26:34,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690665565] [2021-11-25 19:26:34,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:34,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 19:26:34,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:34,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 19:26:34,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:26:34,192 INFO L87 Difference]: Start difference. First operand 166 states and 184 transitions. Second operand has 24 states, 23 states have (on average 6.826086956521739) internal successors, (157), 24 states have internal predecessors, (157), 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 19:26:34,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:34,277 INFO L93 Difference]: Finished difference Result 191 states and 202 transitions. [2021-11-25 19:26:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 19:26:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.826086956521739) internal successors, (157), 24 states have internal predecessors, (157), 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 79 [2021-11-25 19:26:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:34,279 INFO L225 Difference]: With dead ends: 191 [2021-11-25 19:26:34,279 INFO L226 Difference]: Without dead ends: 190 [2021-11-25 19:26:34,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=300, Invalid=756, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 19:26:34,281 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:34,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 155 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:34,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-25 19:26:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 169. [2021-11-25 19:26:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 165 states have (on average 1.0666666666666667) internal successors, (176), 168 states have internal predecessors, (176), 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 19:26:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 176 transitions. [2021-11-25 19:26:34,300 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 176 transitions. Word has length 79 [2021-11-25 19:26:34,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:34,301 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 176 transitions. [2021-11-25 19:26:34,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.826086956521739) internal successors, (157), 24 states have internal predecessors, (157), 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 19:26:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 176 transitions. [2021-11-25 19:26:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-25 19:26:34,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:34,307 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1] [2021-11-25 19:26:34,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:34,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-25 19:26:34,530 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:34,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1286675626, now seen corresponding path program 4 times [2021-11-25 19:26:34,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:34,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621702187] [2021-11-25 19:26:34,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:34,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:35,011 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:35,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:35,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621702187] [2021-11-25 19:26:35,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621702187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:35,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623428169] [2021-11-25 19:26:35,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:26:35,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:35,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:35,015 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:35,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 19:26:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:35,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-25 19:26:35,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:36,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 750 backedges. 0 proven. 750 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:37,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623428169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:37,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [976095749] [2021-11-25 19:26:37,825 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:26:37,825 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:37,826 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:37,826 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:37,826 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:38,145 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:39,366 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8089#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:39,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:39,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:39,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 47, 47] total 126 [2021-11-25 19:26:39,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571709513] [2021-11-25 19:26:39,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:39,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2021-11-25 19:26:39,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:39,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2021-11-25 19:26:39,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2301, Invalid=16605, Unknown=0, NotChecked=0, Total=18906 [2021-11-25 19:26:39,372 INFO L87 Difference]: Start difference. First operand 169 states and 176 transitions. Second operand has 127 states, 126 states have (on average 2.6031746031746033) internal successors, (328), 127 states have internal predecessors, (328), 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 19:26:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:41,524 INFO L93 Difference]: Finished difference Result 286 states and 301 transitions. [2021-11-25 19:26:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-11-25 19:26:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 126 states have (on average 2.6031746031746033) internal successors, (328), 127 states have internal predecessors, (328), 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 110 [2021-11-25 19:26:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:41,526 INFO L225 Difference]: With dead ends: 286 [2021-11-25 19:26:41,526 INFO L226 Difference]: Without dead ends: 253 [2021-11-25 19:26:41,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18945 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5930, Invalid=36300, Unknown=0, NotChecked=0, Total=42230 [2021-11-25 19:26:41,532 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 483 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:41,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 192 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:26:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-25 19:26:41,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2021-11-25 19:26:41,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 222 states have (on average 1.1261261261261262) internal successors, (250), 225 states have internal predecessors, (250), 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 19:26:41,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 250 transitions. [2021-11-25 19:26:41,541 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 250 transitions. Word has length 110 [2021-11-25 19:26:41,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:41,541 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 250 transitions. [2021-11-25 19:26:41,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 126 states have (on average 2.6031746031746033) internal successors, (328), 127 states have internal predecessors, (328), 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 19:26:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 250 transitions. [2021-11-25 19:26:41,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-25 19:26:41,544 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:41,544 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1, 1] [2021-11-25 19:26:41,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:41,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-25 19:26:41,750 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:41,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:41,750 INFO L85 PathProgramCache]: Analyzing trace with hash -25677937, now seen corresponding path program 4 times [2021-11-25 19:26:41,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:41,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235786232] [2021-11-25 19:26:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:41,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:42,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:42,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:42,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235786232] [2021-11-25 19:26:42,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235786232] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:42,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720838210] [2021-11-25 19:26:42,577 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:26:42,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:42,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:42,577 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:42,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 19:26:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:42,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 19:26:42,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:42,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:44,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720838210] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:44,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1046207793] [2021-11-25 19:26:44,664 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:44,664 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:44,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:44,665 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:44,665 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:44,946 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:45,903 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9848#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:45,903 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:45,903 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:45,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-11-25 19:26:45,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923024812] [2021-11-25 19:26:45,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:45,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-25 19:26:45,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-25 19:26:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=8223, Unknown=0, NotChecked=0, Total=10506 [2021-11-25 19:26:45,907 INFO L87 Difference]: Start difference. First operand 226 states and 250 transitions. Second operand has 94 states, 93 states have (on average 3.3870967741935485) internal successors, (315), 94 states have internal predecessors, (315), 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 19:26:47,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:47,543 INFO L93 Difference]: Finished difference Result 425 states and 448 transitions. [2021-11-25 19:26:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-25 19:26:47,544 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.3870967741935485) internal successors, (315), 94 states have internal predecessors, (315), 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 158 [2021-11-25 19:26:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:47,546 INFO L225 Difference]: With dead ends: 425 [2021-11-25 19:26:47,546 INFO L226 Difference]: Without dead ends: 424 [2021-11-25 19:26:47,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5366 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5573, Invalid=16479, Unknown=0, NotChecked=0, Total=22052 [2021-11-25 19:26:47,549 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 591 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:47,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 299 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:26:47,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-25 19:26:47,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 332. [2021-11-25 19:26:47,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 328 states have (on average 1.1981707317073171) internal successors, (393), 331 states have internal predecessors, (393), 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 19:26:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 393 transitions. [2021-11-25 19:26:47,562 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 393 transitions. Word has length 158 [2021-11-25 19:26:47,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:47,562 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 393 transitions. [2021-11-25 19:26:47,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.3870967741935485) internal successors, (315), 94 states have internal predecessors, (315), 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 19:26:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 393 transitions. [2021-11-25 19:26:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 19:26:47,565 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:47,565 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1, 1] [2021-11-25 19:26:47,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:47,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-25 19:26:47,786 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1093307921, now seen corresponding path program 4 times [2021-11-25 19:26:47,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:47,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510302366] [2021-11-25 19:26:47,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:47,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:48,618 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:48,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510302366] [2021-11-25 19:26:48,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510302366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:48,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072786991] [2021-11-25 19:26:48,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:26:48,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:48,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:48,620 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:48,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 19:26:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:48,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-25 19:26:48,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:48,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:50,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072786991] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:50,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [684410968] [2021-11-25 19:26:50,629 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:50,629 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:50,629 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:50,630 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:50,630 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:50,881 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:51,867 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11848#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:51,867 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:51,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:51,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-11-25 19:26:51,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681934506] [2021-11-25 19:26:51,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:51,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-25 19:26:51,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-25 19:26:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2283, Invalid=8223, Unknown=0, NotChecked=0, Total=10506 [2021-11-25 19:26:51,869 INFO L87 Difference]: Start difference. First operand 332 states and 393 transitions. Second operand has 94 states, 93 states have (on average 3.4301075268817205) internal successors, (319), 94 states have internal predecessors, (319), 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 19:26:53,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:53,527 INFO L93 Difference]: Finished difference Result 404 states and 427 transitions. [2021-11-25 19:26:53,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-25 19:26:53,528 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 3.4301075268817205) internal successors, (319), 94 states have internal predecessors, (319), 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 160 [2021-11-25 19:26:53,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:53,530 INFO L225 Difference]: With dead ends: 404 [2021-11-25 19:26:53,530 INFO L226 Difference]: Without dead ends: 403 [2021-11-25 19:26:53,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5364 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5573, Invalid=16479, Unknown=0, NotChecked=0, Total=22052 [2021-11-25 19:26:53,533 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 553 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:53,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 298 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:26:53,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-25 19:26:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 334. [2021-11-25 19:26:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 330 states have (on average 1.1272727272727272) internal successors, (372), 333 states have internal predecessors, (372), 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 19:26:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 372 transitions. [2021-11-25 19:26:53,545 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 372 transitions. Word has length 160 [2021-11-25 19:26:53,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:53,546 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 372 transitions. [2021-11-25 19:26:53,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 3.4301075268817205) internal successors, (319), 94 states have internal predecessors, (319), 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 19:26:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 372 transitions. [2021-11-25 19:26:53,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-25 19:26:53,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:53,548 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 22, 1, 1, 1] [2021-11-25 19:26:53,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-25 19:26:53,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-25 19:26:53,765 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:53,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:53,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1999322631, now seen corresponding path program 4 times [2021-11-25 19:26:53,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:53,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204463005] [2021-11-25 19:26:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:53,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:54,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:54,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204463005] [2021-11-25 19:26:54,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204463005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471424672] [2021-11-25 19:26:54,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:26:54,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:54,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:54,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 19:26:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:54,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 19:26:54,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:26:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:54,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:26:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1771 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:55,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471424672] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:26:55,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1211926089] [2021-11-25 19:26:55,395 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:26:55,395 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:26:55,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:26:55,396 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:26:55,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:26:55,625 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:26:56,367 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13801#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:26:56,367 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:26:56,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:26:56,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-11-25 19:26:56,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585482877] [2021-11-25 19:26:56,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:26:56,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 19:26:56,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:26:56,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 19:26:56,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1152, Invalid=2040, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 19:26:56,370 INFO L87 Difference]: Start difference. First operand 334 states and 372 transitions. Second operand has 48 states, 47 states have (on average 6.914893617021277) internal successors, (325), 48 states have internal predecessors, (325), 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 19:26:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:26:56,507 INFO L93 Difference]: Finished difference Result 383 states and 406 transitions. [2021-11-25 19:26:56,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 19:26:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.914893617021277) internal successors, (325), 48 states have internal predecessors, (325), 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 163 [2021-11-25 19:26:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:26:56,510 INFO L225 Difference]: With dead ends: 383 [2021-11-25 19:26:56,510 INFO L226 Difference]: Without dead ends: 382 [2021-11-25 19:26:56,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 511 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1152, Invalid=2040, Unknown=0, NotChecked=0, Total=3192 [2021-11-25 19:26:56,511 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 99 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:26:56,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 295 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:26:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-25 19:26:56,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 337. [2021-11-25 19:26:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 333 states have (on average 1.057057057057057) internal successors, (352), 336 states have internal predecessors, (352), 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 19:26:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 352 transitions. [2021-11-25 19:26:56,524 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 352 transitions. Word has length 163 [2021-11-25 19:26:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:26:56,525 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 352 transitions. [2021-11-25 19:26:56,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.914893617021277) internal successors, (325), 48 states have internal predecessors, (325), 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 19:26:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 352 transitions. [2021-11-25 19:26:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-25 19:26:56,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:26:56,528 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1] [2021-11-25 19:26:56,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-25 19:26:56,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-25 19:26:56,742 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:26:56,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:26:56,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1912944982, now seen corresponding path program 5 times [2021-11-25 19:26:56,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:26:56,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536703944] [2021-11-25 19:26:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:26:56,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:26:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:26:58,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:26:58,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:26:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536703944] [2021-11-25 19:26:58,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536703944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:26:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675326691] [2021-11-25 19:26:58,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:26:58,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:26:58,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:26:58,107 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:26:58,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-25 19:26:58,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2021-11-25 19:26:58,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:26:58,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-25 19:26:58,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:01,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:27:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3286 backedges. 0 proven. 3286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:05,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675326691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:27:05,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [628425424] [2021-11-25 19:27:05,924 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:27:05,924 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:27:05,924 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:27:05,925 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:27:05,925 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:27:06,214 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:27:07,735 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16205#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:27:07,735 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:27:07,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:27:07,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 95, 95] total 254 [2021-11-25 19:27:07,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801778482] [2021-11-25 19:27:07,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:27:07,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 255 states [2021-11-25 19:27:07,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 255 interpolants. [2021-11-25 19:27:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8917, Invalid=61573, Unknown=0, NotChecked=0, Total=70490 [2021-11-25 19:27:07,740 INFO L87 Difference]: Start difference. First operand 337 states and 352 transitions. Second operand has 255 states, 254 states have (on average 2.6141732283464565) internal successors, (664), 255 states have internal predecessors, (664), 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 19:27:14,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:14,678 INFO L93 Difference]: Finished difference Result 566 states and 597 transitions. [2021-11-25 19:27:14,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2021-11-25 19:27:14,679 INFO L78 Accepts]: Start accepts. Automaton has has 255 states, 254 states have (on average 2.6141732283464565) internal successors, (664), 255 states have internal predecessors, (664), 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 222 [2021-11-25 19:27:14,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:14,681 INFO L225 Difference]: With dead ends: 566 [2021-11-25 19:27:14,682 INFO L226 Difference]: Without dead ends: 501 [2021-11-25 19:27:14,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 870 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75113 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=23602, Invalid=140828, Unknown=0, NotChecked=0, Total=164430 [2021-11-25 19:27:14,694 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1329 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 339 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:14,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 292 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 19:27:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-25 19:27:14,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 450. [2021-11-25 19:27:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 446 states have (on average 1.116591928251121) internal successors, (498), 449 states have internal predecessors, (498), 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 19:27:14,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 498 transitions. [2021-11-25 19:27:14,711 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 498 transitions. Word has length 222 [2021-11-25 19:27:14,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:14,711 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 498 transitions. [2021-11-25 19:27:14,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 255 states, 254 states have (on average 2.6141732283464565) internal successors, (664), 255 states have internal predecessors, (664), 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 19:27:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 498 transitions. [2021-11-25 19:27:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-25 19:27:14,716 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:14,717 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1, 1] [2021-11-25 19:27:14,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:14,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:14,930 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:27:14,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1045942129, now seen corresponding path program 5 times [2021-11-25 19:27:14,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:14,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700323873] [2021-11-25 19:27:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:14,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:17,632 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:17,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700323873] [2021-11-25 19:27:17,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700323873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:17,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320109330] [2021-11-25 19:27:17,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:27:17,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:17,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:17,633 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:17,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-25 19:27:17,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 19:27:17,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:27:17,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 19:27:17,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:18,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:27:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:24,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320109330] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:27:24,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1144579931] [2021-11-25 19:27:24,706 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:27:24,706 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:27:24,707 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:27:24,707 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:27:24,707 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:27:24,904 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:27:26,208 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19780#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:27:26,208 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:27:26,208 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:27:26,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-11-25 19:27:26,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015372428] [2021-11-25 19:27:26,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:27:26,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-25 19:27:26,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:26,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-25 19:27:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9147, Invalid=30255, Unknown=0, NotChecked=0, Total=39402 [2021-11-25 19:27:26,216 INFO L87 Difference]: Start difference. First operand 450 states and 498 transitions. Second operand has 190 states, 189 states have (on average 3.4444444444444446) internal successors, (651), 190 states have internal predecessors, (651), 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 19:27:32,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:32,487 INFO L93 Difference]: Finished difference Result 857 states and 904 transitions. [2021-11-25 19:27:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-25 19:27:32,488 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 3.4444444444444446) internal successors, (651), 190 states have internal predecessors, (651), 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 326 [2021-11-25 19:27:32,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:32,492 INFO L225 Difference]: With dead ends: 857 [2021-11-25 19:27:32,492 INFO L226 Difference]: Without dead ends: 856 [2021-11-25 19:27:32,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1165 GetRequests, 874 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20006 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=22637, Invalid=62919, Unknown=0, NotChecked=0, Total=85556 [2021-11-25 19:27:32,497 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1737 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1737 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:32,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1737 Valid, 580 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:27:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-25 19:27:32,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 668. [2021-11-25 19:27:32,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 664 states have (on average 1.194277108433735) internal successors, (793), 667 states have internal predecessors, (793), 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 19:27:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 793 transitions. [2021-11-25 19:27:32,519 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 793 transitions. Word has length 326 [2021-11-25 19:27:32,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:32,520 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 793 transitions. [2021-11-25 19:27:32,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 3.4444444444444446) internal successors, (651), 190 states have internal predecessors, (651), 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 19:27:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 793 transitions. [2021-11-25 19:27:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-25 19:27:32,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:32,523 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1, 1] [2021-11-25 19:27:32,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:32,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-25 19:27:32,737 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:27:32,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:32,738 INFO L85 PathProgramCache]: Analyzing trace with hash -128037103, now seen corresponding path program 5 times [2021-11-25 19:27:32,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:32,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735523100] [2021-11-25 19:27:32,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:32,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:35,337 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:35,338 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:35,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735523100] [2021-11-25 19:27:35,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735523100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:35,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847898647] [2021-11-25 19:27:35,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:27:35,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:35,340 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:35,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-25 19:27:35,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 19:27:35,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:27:35,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-25 19:27:35,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:36,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:36,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:27:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847898647] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:27:42,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1530793947] [2021-11-25 19:27:42,372 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:27:42,372 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:27:42,372 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:27:42,372 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:27:42,372 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:27:42,606 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:27:44,018 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '23844#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:27:44,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:27:44,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:27:44,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-11-25 19:27:44,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402995311] [2021-11-25 19:27:44,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:27:44,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-25 19:27:44,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:44,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-25 19:27:44,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9147, Invalid=30255, Unknown=0, NotChecked=0, Total=39402 [2021-11-25 19:27:44,025 INFO L87 Difference]: Start difference. First operand 668 states and 793 transitions. Second operand has 190 states, 189 states have (on average 3.4656084656084656) internal successors, (655), 190 states have internal predecessors, (655), 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 19:27:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:50,423 INFO L93 Difference]: Finished difference Result 812 states and 859 transitions. [2021-11-25 19:27:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-25 19:27:50,423 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 3.4656084656084656) internal successors, (655), 190 states have internal predecessors, (655), 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 328 [2021-11-25 19:27:50,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:50,429 INFO L225 Difference]: With dead ends: 812 [2021-11-25 19:27:50,429 INFO L226 Difference]: Without dead ends: 811 [2021-11-25 19:27:50,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 880 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20004 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=22637, Invalid=62919, Unknown=0, NotChecked=0, Total=85556 [2021-11-25 19:27:50,436 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 1480 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:50,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 536 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:27:50,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-25 19:27:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 670. [2021-11-25 19:27:50,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 666 states have (on average 1.1231231231231231) internal successors, (748), 669 states have internal predecessors, (748), 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 19:27:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 748 transitions. [2021-11-25 19:27:50,459 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 748 transitions. Word has length 328 [2021-11-25 19:27:50,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:50,460 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 748 transitions. [2021-11-25 19:27:50,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 3.4656084656084656) internal successors, (655), 190 states have internal predecessors, (655), 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 19:27:50,460 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 748 transitions. [2021-11-25 19:27:50,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-25 19:27:50,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:50,463 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 46, 1, 1, 1] [2021-11-25 19:27:50,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-25 19:27:50,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:50,680 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:27:50,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:50,680 INFO L85 PathProgramCache]: Analyzing trace with hash -422322937, now seen corresponding path program 5 times [2021-11-25 19:27:50,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999144712] [2021-11-25 19:27:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:50,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:27:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 7567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:51,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:27:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999144712] [2021-11-25 19:27:51,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999144712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:27:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186921594] [2021-11-25 19:27:51,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:27:51,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:51,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:27:51,763 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:27:51,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-25 19:27:52,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 19:27:52,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:27:52,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 19:27:52,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:27:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 7567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:52,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:27:55,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 7567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:27:55,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186921594] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:27:55,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115039707] [2021-11-25 19:27:55,309 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:27:55,309 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:27:55,309 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:27:55,309 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:27:55,309 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:27:55,539 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:27:56,484 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '27789#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:27:56,484 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:27:56,484 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:27:56,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-11-25 19:27:56,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385562767] [2021-11-25 19:27:56,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:27:56,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-25 19:27:56,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:27:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-25 19:27:56,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4584, Invalid=6336, Unknown=0, NotChecked=0, Total=10920 [2021-11-25 19:27:56,488 INFO L87 Difference]: Start difference. First operand 670 states and 748 transitions. Second operand has 96 states, 95 states have (on average 6.957894736842105) internal successors, (661), 96 states have internal predecessors, (661), 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 19:27:56,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:27:56,907 INFO L93 Difference]: Finished difference Result 767 states and 814 transitions. [2021-11-25 19:27:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-25 19:27:56,907 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.957894736842105) internal successors, (661), 96 states have internal predecessors, (661), 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 331 [2021-11-25 19:27:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:27:56,910 INFO L225 Difference]: With dead ends: 767 [2021-11-25 19:27:56,910 INFO L226 Difference]: Without dead ends: 766 [2021-11-25 19:27:56,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1039 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1261 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4584, Invalid=6336, Unknown=0, NotChecked=0, Total=10920 [2021-11-25 19:27:56,912 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 279 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:27:56,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 561 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:27:56,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-25 19:27:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 673. [2021-11-25 19:27:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 669 states have (on average 1.0523168908819134) internal successors, (704), 672 states have internal predecessors, (704), 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 19:27:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 704 transitions. [2021-11-25 19:27:56,933 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 704 transitions. Word has length 331 [2021-11-25 19:27:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:27:56,934 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 704 transitions. [2021-11-25 19:27:56,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.957894736842105) internal successors, (661), 96 states have internal predecessors, (661), 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 19:27:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 704 transitions. [2021-11-25 19:27:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2021-11-25 19:27:56,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:27:56,938 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 63, 63, 63, 1, 1, 1, 1, 1] [2021-11-25 19:27:56,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-25 19:27:57,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:27:57,154 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:27:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:27:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash 798352726, now seen corresponding path program 6 times [2021-11-25 19:27:57,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:27:57,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221155900] [2021-11-25 19:27:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:27:57,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:27:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:28:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 13734 backedges. 0 proven. 13734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:28:01,652 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:28:01,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221155900] [2021-11-25 19:28:01,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221155900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:28:01,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461638509] [2021-11-25 19:28:01,653 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:28:01,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:28:01,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:28:01,674 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:28:01,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-25 19:28:01,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:28:01,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:28:01,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 1109 conjuncts, 255 conjunts are in the unsatisfiable core [2021-11-25 19:28:01,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:28:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13734 backedges. 0 proven. 13734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:28:12,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:28:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 13734 backedges. 0 proven. 13734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:28:28,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461638509] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:28:28,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1963103432] [2021-11-25 19:28:28,022 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:28:28,022 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:28:28,025 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:28:28,026 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:28:28,026 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:28:28,355 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:28:30,614 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32609#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:28:30,614 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:28:30,614 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:28:30,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 191, 191] total 510 [2021-11-25 19:28:30,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698897871] [2021-11-25 19:28:30,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:28:30,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 511 states [2021-11-25 19:28:30,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:28:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 511 interpolants. [2021-11-25 19:28:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35205, Invalid=236757, Unknown=0, NotChecked=0, Total=271962 [2021-11-25 19:28:30,635 INFO L87 Difference]: Start difference. First operand 673 states and 704 transitions. Second operand has 511 states, 510 states have (on average 2.619607843137255) internal successors, (1336), 511 states have internal predecessors, (1336), 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 19:29:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:29:02,408 INFO L93 Difference]: Finished difference Result 1126 states and 1189 transitions. [2021-11-25 19:29:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 413 states. [2021-11-25 19:29:02,409 INFO L78 Accepts]: Start accepts. Automaton has has 511 states, 510 states have (on average 2.619607843137255) internal successors, (1336), 511 states have internal predecessors, (1336), 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 446 [2021-11-25 19:29:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:29:02,413 INFO L225 Difference]: With dead ends: 1126 [2021-11-25 19:29:02,413 INFO L226 Difference]: Without dead ends: 997 [2021-11-25 19:29:02,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1750 GetRequests, 946 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298809 ImplicationChecksByTransitivity, 50.8s TimeCoverageRelationStatistics Valid=94274, Invalid=554556, Unknown=0, NotChecked=0, Total=648830 [2021-11-25 19:29:02,442 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3302 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:29:02,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3302 Valid, 521 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-25 19:29:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2021-11-25 19:29:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 898. [2021-11-25 19:29:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 894 states have (on average 1.1118568232662192) internal successors, (994), 897 states have internal predecessors, (994), 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 19:29:02,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 994 transitions. [2021-11-25 19:29:02,471 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 994 transitions. Word has length 446 [2021-11-25 19:29:02,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:29:02,472 INFO L470 AbstractCegarLoop]: Abstraction has 898 states and 994 transitions. [2021-11-25 19:29:02,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 511 states, 510 states have (on average 2.619607843137255) internal successors, (1336), 511 states have internal predecessors, (1336), 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 19:29:02,473 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 994 transitions. [2021-11-25 19:29:02,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2021-11-25 19:29:02,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:29:02,479 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 1, 1, 1] [2021-11-25 19:29:02,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-25 19:29:02,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-25 19:29:02,706 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:29:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:29:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1582903951, now seen corresponding path program 6 times [2021-11-25 19:29:02,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:29:02,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322804998] [2021-11-25 19:29:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:29:02,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:29:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:29:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:29:12,375 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:29:12,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322804998] [2021-11-25 19:29:12,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322804998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:29:12,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869232479] [2021-11-25 19:29:12,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:29:12,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:29:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:29:12,376 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:29:12,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-25 19:29:12,638 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:29:12,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:29:12,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-25 19:29:12,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:29:13,974 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:29:13,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:29:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30785 backedges. 0 proven. 30785 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:29:39,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869232479] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:29:39,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638373138] [2021-11-25 19:29:39,009 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:29:39,010 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:29:39,010 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:29:39,010 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:29:39,010 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:29:39,260 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:29:41,701 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '39816#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~post5#1| |ULTIMATE.start_main_~x~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (< 2147483646 |ULTIMATE.start_main_#t~post5#1|) (= |#NULL.base| 0))' at error location [2021-11-25 19:29:41,701 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:29:41,701 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:29:41,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-11-25 19:29:41,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056772551] [2021-11-25 19:29:41,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:29:41,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-25 19:29:41,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:29:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-25 19:29:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36699, Invalid=115791, Unknown=0, NotChecked=0, Total=152490 [2021-11-25 19:29:41,716 INFO L87 Difference]: Start difference. First operand 898 states and 994 transitions. Second operand has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 382 states have internal predecessors, (1323), 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 19:30:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:30:25,808 INFO L93 Difference]: Finished difference Result 1721 states and 1816 transitions. [2021-11-25 19:30:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-11-25 19:30:25,809 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 382 states have internal predecessors, (1323), 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 662 [2021-11-25 19:30:25,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:30:25,817 INFO L225 Difference]: With dead ends: 1721 [2021-11-25 19:30:25,817 INFO L226 Difference]: Without dead ends: 1720 [2021-11-25 19:30:25,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2365 GetRequests, 1786 SyntacticMatches, 0 SemanticMatches, 579 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76934 ImplicationChecksByTransitivity, 53.2s TimeCoverageRelationStatistics Valid=91325, Invalid=245655, Unknown=0, NotChecked=0, Total=336980 [2021-11-25 19:30:25,843 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 4033 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4033 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:30:25,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4033 Valid, 1105 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 19:30:25,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2021-11-25 19:30:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1340. [2021-11-25 19:30:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1340 states, 1336 states have (on average 1.1923652694610778) internal successors, (1593), 1339 states have internal predecessors, (1593), 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 19:30:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1593 transitions. [2021-11-25 19:30:25,889 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1593 transitions. Word has length 662 [2021-11-25 19:30:25,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:30:25,891 INFO L470 AbstractCegarLoop]: Abstraction has 1340 states and 1593 transitions. [2021-11-25 19:30:25,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 3.47244094488189) internal successors, (1323), 382 states have internal predecessors, (1323), 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 19:30:25,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1593 transitions. [2021-11-25 19:30:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2021-11-25 19:30:25,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:30:25,898 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 94, 1, 1, 1] [2021-11-25 19:30:25,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-25 19:30:26,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:26,110 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:30:26,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:30:26,110 INFO L85 PathProgramCache]: Analyzing trace with hash 752275729, now seen corresponding path program 6 times [2021-11-25 19:30:26,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:30:26,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956432116] [2021-11-25 19:30:26,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:30:26,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:30:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:30:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:30:37,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:30:37,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956432116] [2021-11-25 19:30:37,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956432116] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:30:37,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717033981] [2021-11-25 19:30:37,342 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:30:37,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:30:37,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:30:37,343 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:30:37,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-25 19:30:37,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:30:37,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:30:37,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-25 19:30:37,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:30:39,483 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:30:39,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:31:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:31:07,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717033981] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:31:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1114707768] [2021-11-25 19:31:07,101 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:31:07,101 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:31:07,101 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:31:07,102 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:31:07,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:31:07,381 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:31:09,886 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '48008#(and (<= 2 |ULTIMATE.start_main_~x~0#1|) (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_#t~post6#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |#NULL.offset| 0) (< 2147483646 |ULTIMATE.start_main_#t~post6#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:31:09,887 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:31:09,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:31:09,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-11-25 19:31:09,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815413064] [2021-11-25 19:31:09,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:31:09,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-25 19:31:09,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:31:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-25 19:31:09,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36699, Invalid=115791, Unknown=0, NotChecked=0, Total=152490 [2021-11-25 19:31:09,905 INFO L87 Difference]: Start difference. First operand 1340 states and 1593 transitions. Second operand has 382 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 382 states have internal predecessors, (1327), 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 19:31:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:31:54,378 INFO L93 Difference]: Finished difference Result 1628 states and 1723 transitions. [2021-11-25 19:31:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-11-25 19:31:54,379 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 382 states have internal predecessors, (1327), 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 664 [2021-11-25 19:31:54,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:31:54,390 INFO L225 Difference]: With dead ends: 1628 [2021-11-25 19:31:54,390 INFO L226 Difference]: Without dead ends: 1627 [2021-11-25 19:31:54,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2371 GetRequests, 1792 SyntacticMatches, 0 SemanticMatches, 579 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76932 ImplicationChecksByTransitivity, 58.9s TimeCoverageRelationStatistics Valid=91325, Invalid=245655, Unknown=0, NotChecked=0, Total=336980 [2021-11-25 19:31:54,418 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 3630 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:31:54,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3630 Valid, 992 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 19:31:54,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2021-11-25 19:31:54,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1342. [2021-11-25 19:31:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1342 states, 1338 states have (on average 1.1210762331838564) internal successors, (1500), 1341 states have internal predecessors, (1500), 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 19:31:54,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1500 transitions. [2021-11-25 19:31:54,469 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1500 transitions. Word has length 664 [2021-11-25 19:31:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:31:54,470 INFO L470 AbstractCegarLoop]: Abstraction has 1342 states and 1500 transitions. [2021-11-25 19:31:54,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 3.4829396325459316) internal successors, (1327), 382 states have internal predecessors, (1327), 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 19:31:54,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1500 transitions. [2021-11-25 19:31:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 668 [2021-11-25 19:31:54,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:31:54,479 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 95, 94, 1, 1, 1] [2021-11-25 19:31:54,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-25 19:31:54,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-25 19:31:54,706 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:31:54,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:31:54,706 INFO L85 PathProgramCache]: Analyzing trace with hash -93054201, now seen corresponding path program 6 times [2021-11-25 19:31:54,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:31:54,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006696868] [2021-11-25 19:31:54,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:31:54,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:31:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:31:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 31255 backedges. 0 proven. 31255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:31:59,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:31:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006696868] [2021-11-25 19:31:59,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006696868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:31:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388268745] [2021-11-25 19:31:59,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:31:59,855 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:31:59,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:31:59,856 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:31:59,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-25 19:32:00,132 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:32:00,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:32:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 19:32:00,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:32:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 31255 backedges. 0 proven. 31255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:32:01,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:32:13,825 INFO L134 CoverageAnalysis]: Checked inductivity of 31255 backedges. 0 proven. 31255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:32:13,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388268745] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:32:13,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [626554324] [2021-11-25 19:32:13,826 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 19:32:13,826 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:32:13,827 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:32:13,827 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:32:13,827 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:32:14,133 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:32:15,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '55937#(and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ |ULTIMATE.start_main_~z~0#1| 2147483646) 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:32:15,702 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:32:15,702 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:32:15,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-11-25 19:32:15,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162993543] [2021-11-25 19:32:15,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:32:15,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-25 19:32:15,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:32:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-25 19:32:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18360, Invalid=21840, Unknown=0, NotChecked=0, Total=40200 [2021-11-25 19:32:15,709 INFO L87 Difference]: Start difference. First operand 1342 states and 1500 transitions. Second operand has 192 states, 191 states have (on average 6.979057591623037) internal successors, (1333), 192 states have internal predecessors, (1333), 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 19:32:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:32:19,126 INFO L93 Difference]: Finished difference Result 1535 states and 1630 transitions. [2021-11-25 19:32:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-25 19:32:19,126 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.979057591623037) internal successors, (1333), 192 states have internal predecessors, (1333), 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 667 [2021-11-25 19:32:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:32:19,133 INFO L225 Difference]: With dead ends: 1535 [2021-11-25 19:32:19,133 INFO L226 Difference]: Without dead ends: 1534 [2021-11-25 19:32:19,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2095 GetRequests, 1896 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2557 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=18360, Invalid=21840, Unknown=0, NotChecked=0, Total=40200 [2021-11-25 19:32:19,137 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 867 mSDsluCounter, 1165 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:32:19,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 1107 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 19:32:19,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2021-11-25 19:32:19,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1345. [2021-11-25 19:32:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1341 states have (on average 1.0499627143922445) internal successors, (1408), 1344 states have internal predecessors, (1408), 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 19:32:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1408 transitions. [2021-11-25 19:32:19,188 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1408 transitions. Word has length 667 [2021-11-25 19:32:19,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:32:19,188 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1408 transitions. [2021-11-25 19:32:19,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.979057591623037) internal successors, (1333), 192 states have internal predecessors, (1333), 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 19:32:19,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1408 transitions. [2021-11-25 19:32:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2021-11-25 19:32:19,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:32:19,253 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 127, 127, 127, 1, 1, 1, 1, 1] [2021-11-25 19:32:19,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-25 19:32:19,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-25 19:32:19,453 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-25 19:32:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:32:19,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1262959958, now seen corresponding path program 7 times [2021-11-25 19:32:19,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:32:19,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066119108] [2021-11-25 19:32:19,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:32:19,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:32:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 56134 backedges. 0 proven. 56134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:32:40,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:32:40,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066119108] [2021-11-25 19:32:40,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066119108] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:32:40,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567652367] [2021-11-25 19:32:40,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 19:32:40,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:32:40,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:32:40,172 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:32:40,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f425f4a-fa3d-44da-9fe0-0e881c4de6b4/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-25 19:32:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:32:40,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 2197 conjuncts, 511 conjunts are in the unsatisfiable core [2021-11-25 19:32:40,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:33:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 56134 backedges. 0 proven. 56134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:33:29,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:34:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 56134 backedges. 0 proven. 56134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:34:50,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567652367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:34:50,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1330170565] [2021-11-25 19:34:50,918 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-25 19:34:50,918 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:34:50,918 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:34:50,919 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:34:50,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:34:51,339 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:34:55,916 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '65589#(and (<= (+ 2 |ULTIMATE.start_main_~z~0#1|) 0) (= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) |ULTIMATE.start_main_#t~short7#1| (= |#NULL.offset| 0) (< 2147483647 (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:34:55,916 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:34:55,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 19:34:55,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 383, 383] total 1022 [2021-11-25 19:34:55,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823940568] [2021-11-25 19:34:55,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 19:34:55,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 1023 states [2021-11-25 19:34:55,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:34:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 1023 interpolants. [2021-11-25 19:34:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140005, Invalid=928117, Unknown=0, NotChecked=0, Total=1068122 [2021-11-25 19:34:56,121 INFO L87 Difference]: Start difference. First operand 1345 states and 1408 transitions. Second operand has 1023 states, 1022 states have (on average 2.6223091976516635) internal successors, (2680), 1023 states have internal predecessors, (2680), 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)