./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/easy2-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/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_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0ba0e3ec7d24c78a29a4980275f3f450c6adf9cab13a788bc587b5f2c8c6cbd4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:50:11,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:50:11,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:50:11,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:50:11,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:50:11,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:50:11,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:50:11,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:50:11,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:50:11,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:50:11,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:50:11,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:50:11,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:50:11,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:50:11,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:50:11,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:50:11,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:50:11,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:50:11,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:50:11,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:50:11,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:50:11,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:50:11,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:50:11,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:50:11,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:50:11,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:50:11,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:50:11,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:50:11,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:50:11,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:50:11,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:50:11,997 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:50:11,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:50:11,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:50:12,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:50:12,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:50:12,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:50:12,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:50:12,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:50:12,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:50:12,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:50:12,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 18:50:12,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:50:12,031 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:50:12,031 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:50:12,032 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:50:12,032 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:50:12,033 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:50:12,033 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:50:12,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:50:12,033 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:50:12,033 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:50:12,034 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:50:12,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:50:12,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:50:12,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:50:12,034 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:50:12,035 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:50:12,035 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:50:12,035 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:50:12,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:50:12,036 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:50:12,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:50:12,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:50:12,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:50:12,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:50:12,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:50:12,037 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:50:12,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:50:12,038 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:50:12,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:50:12,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:50:12,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:50:12,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:50:12,039 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:50:12,039 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:50:12,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:50:12,040 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:50:12,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:50:12,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:50:12,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:50:12,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:50:12,041 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_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ba0e3ec7d24c78a29a4980275f3f450c6adf9cab13a788bc587b5f2c8c6cbd4 [2021-11-25 18:50:12,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:50:12,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:50:12,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:50:12,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:50:12,323 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:50:12,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted/easy2-2.c [2021-11-25 18:50:12,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/data/12029755b/e8ed137618c24cefb093e807ee2f06a2/FLAG2de380ab2 [2021-11-25 18:50:12,937 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:50:12,938 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/sv-benchmarks/c/termination-crafted/easy2-2.c [2021-11-25 18:50:12,947 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/data/12029755b/e8ed137618c24cefb093e807ee2f06a2/FLAG2de380ab2 [2021-11-25 18:50:13,308 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/data/12029755b/e8ed137618c24cefb093e807ee2f06a2 [2021-11-25 18:50:13,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:50:13,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:50:13,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:50:13,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:50:13,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:50:13,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55cd92c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13, skipping insertion in model container [2021-11-25 18:50:13,324 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:50:13,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:50:13,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:50:13,505 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:50:13,530 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:50:13,542 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:50:13,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13 WrapperNode [2021-11-25 18:50:13,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:50:13,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:50:13,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:50:13,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:50:13,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,574 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2021-11-25 18:50:13,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:50:13,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:50:13,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:50:13,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:50:13,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:50:13,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:50:13,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:50:13,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:50:13,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (1/1) ... [2021-11-25 18:50:13,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:50:13,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:13,624 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:50:13,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:50:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:50:13,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:50:13,738 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:50:13,745 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:50:13,840 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:50:13,856 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:50:13,857 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:50:13,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:50:13 BoogieIcfgContainer [2021-11-25 18:50:13,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:50:13,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:50:13,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:50:13,867 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:50:13,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:50:13" (1/3) ... [2021-11-25 18:50:13,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f742b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:50:13, skipping insertion in model container [2021-11-25 18:50:13,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:50:13" (2/3) ... [2021-11-25 18:50:13,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f742b11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:50:13, skipping insertion in model container [2021-11-25 18:50:13,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:50:13" (3/3) ... [2021-11-25 18:50:13,870 INFO L111 eAbstractionObserver]: Analyzing ICFG easy2-2.c [2021-11-25 18:50:13,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:50:13,875 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 18:50:13,924 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:50:13,932 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 18:50:13,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 18:50:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:50:13,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:13,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:50:13,953 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:13,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:13,959 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2021-11-25 18:50:13,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:13,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907298492] [2021-11-25 18:50:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:13,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,156 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 18:50:14,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907298492] [2021-11-25 18:50:14,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907298492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:14,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:14,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:50:14,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001513275] [2021-11-25 18:50:14,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:14,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:14,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,205 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:14,269 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-25 18:50:14,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-25 18:50:14,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:14,288 INFO L225 Difference]: With dead ends: 20 [2021-11-25 18:50:14,288 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:50:14,294 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 18:50:14,298 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 19 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 18:50:14,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 19 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:50:14,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-25 18:50:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-25 18:50:14,364 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-11-25 18:50:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:14,365 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-25 18:50:14,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-25 18:50:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:50:14,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:14,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:50:14,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:50:14,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2021-11-25 18:50:14,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386138942] [2021-11-25 18:50:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386138942] [2021-11-25 18:50:14,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386138942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:14,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:14,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:50:14,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577547850] [2021-11-25 18:50:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:14,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:14,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:14,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:14,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,420 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:14,430 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-25 18:50:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-25 18:50:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:14,432 INFO L225 Difference]: With dead ends: 16 [2021-11-25 18:50:14,432 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:50:14,432 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 18:50:14,434 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:14,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:14,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:50:14,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:50:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:50:14,439 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2021-11-25 18:50:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:14,440 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:50:14,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,453 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:50:14,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:50:14,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:14,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:50:14,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:50:14,454 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:14,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:14,455 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2021-11-25 18:50:14,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:14,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571456313] [2021-11-25 18:50:14,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,485 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571456313] [2021-11-25 18:50:14,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571456313] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:14,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:14,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:50:14,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933105528] [2021-11-25 18:50:14,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:14,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:14,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,507 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:14,518 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 18:50:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:14,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 18:50:14,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:14,519 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:50:14,520 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:50:14,520 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 18:50:14,522 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:14,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:50:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:50:14,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:50:14,528 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-25 18:50:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:14,528 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:50:14,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:50:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:50:14,529 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:14,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:50:14,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:50:14,530 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2021-11-25 18:50:14,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:14,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723597984] [2021-11-25 18:50:14,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,556 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723597984] [2021-11-25 18:50:14,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723597984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:14,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:14,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:50:14,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056919698] [2021-11-25 18:50:14,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:14,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:14,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:14,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:14,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,560 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:14,577 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-25 18:50:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-25 18:50:14,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:14,578 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:50:14,578 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:50:14,579 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 18:50:14,584 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:14,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:14,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:50:14,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 18:50:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-25 18:50:14,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-25 18:50:14,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:14,590 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-25 18:50:14,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-25 18:50:14,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:50:14,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:14,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:14,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:50:14,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:14,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:14,593 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2021-11-25 18:50:14,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:14,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560432510] [2021-11-25 18:50:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,649 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560432510] [2021-11-25 18:50:14,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560432510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:14,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:14,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:50:14,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9391149] [2021-11-25 18:50:14,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:14,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:14,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:14,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:14,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,652 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:14,666 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-25 18:50:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:14,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 18:50:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:14,669 INFO L225 Difference]: With dead ends: 17 [2021-11-25 18:50:14,669 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 18:50:14,670 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 18:50:14,671 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:14,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:14,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 18:50:14,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 18:50:14,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-25 18:50:14,677 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-25 18:50:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:14,677 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-25 18:50:14,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-25 18:50:14,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:50:14,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:14,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:14,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:50:14,679 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2021-11-25 18:50:14,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:14,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580596310] [2021-11-25 18:50:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580596310] [2021-11-25 18:50:14,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580596310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:50:14,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:50:14,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:50:14,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174596086] [2021-11-25 18:50:14,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:50:14,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:50:14,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:50:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,752 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) 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 18:50:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:14,763 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-25 18:50:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:50:14,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) 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 18:50:14,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:14,764 INFO L225 Difference]: With dead ends: 16 [2021-11-25 18:50:14,764 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:50:14,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:50:14,766 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:14,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:50:14,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:50:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:14,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:50:14,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-25 18:50:14,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:14,772 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:50:14,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) 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 18:50:14,773 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:50:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:50:14,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:14,774 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:50:14,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:50:14,774 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:14,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:14,775 INFO L85 PathProgramCache]: Analyzing trace with hash -83337101, now seen corresponding path program 1 times [2021-11-25 18:50:14,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:14,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295058238] [2021-11-25 18:50:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:14,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295058238] [2021-11-25 18:50:14,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295058238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:14,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719994595] [2021-11-25 18:50:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:14,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:14,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:14,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:14,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:50:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:14,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:50:14,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:14,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:15,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:15,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719994595] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:15,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1853451219] [2021-11-25 18:50:15,052 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:15,052 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:15,057 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:15,063 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:15,064 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:15,391 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:15,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '315#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2021-11-25 18:50:15,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:15,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:15,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-25 18:50:15,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021591644] [2021-11-25 18:50:15,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:15,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:50:15,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:50:15,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:50:15,635 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:15,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:15,684 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-11-25 18:50:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:50:15,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 18:50:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:15,685 INFO L225 Difference]: With dead ends: 36 [2021-11-25 18:50:15,685 INFO L226 Difference]: Without dead ends: 35 [2021-11-25 18:50:15,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:50:15,687 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 16 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:15,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 31 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:15,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-25 18:50:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-25 18:50:15,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-25 18:50:15,694 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2021-11-25 18:50:15,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:15,695 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-25 18:50:15,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:15,695 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-25 18:50:15,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:50:15,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:15,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-25 18:50:15,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 18:50:15,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-25 18:50:15,920 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:15,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:15,921 INFO L85 PathProgramCache]: Analyzing trace with hash -204434052, now seen corresponding path program 1 times [2021-11-25 18:50:15,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:15,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811848761] [2021-11-25 18:50:15,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:15,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:15,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811848761] [2021-11-25 18:50:15,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811848761] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340351194] [2021-11-25 18:50:15,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:15,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:15,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:15,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:50:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:16,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:50:16,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:16,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:16,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340351194] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [404851216] [2021-11-25 18:50:16,090 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:16,091 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:16,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:16,091 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:16,091 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:16,266 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:16,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '478#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:16,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:16,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:16,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-25 18:50:16,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791001605] [2021-11-25 18:50:16,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:16,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:50:16,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:50:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:50:16,449 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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 18:50:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:16,473 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-11-25 18:50:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:50:16,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) Word has length 13 [2021-11-25 18:50:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:16,474 INFO L225 Difference]: With dead ends: 37 [2021-11-25 18:50:16,475 INFO L226 Difference]: Without dead ends: 36 [2021-11-25 18:50:16,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:50:16,476 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:16,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:16,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-25 18:50:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-25 18:50:16,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:16,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-11-25 18:50:16,483 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 13 [2021-11-25 18:50:16,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:16,483 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-11-25 18:50:16,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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 18:50:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-11-25 18:50:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:50:16,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:16,485 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1] [2021-11-25 18:50:16,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:16,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:16,698 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:16,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:16,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2101518560, now seen corresponding path program 2 times [2021-11-25 18:50:16,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:16,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659540598] [2021-11-25 18:50:16,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:16,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:16,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:16,792 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 18:50:16,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:16,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659540598] [2021-11-25 18:50:16,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659540598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:16,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353005390] [2021-11-25 18:50:16,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:50:16,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:16,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:16,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:16,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:50:16,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:50:16,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:16,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:50:16,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:16,934 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 18:50:16,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:17,077 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 18:50:17,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353005390] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482851316] [2021-11-25 18:50:17,081 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:17,081 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:17,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:17,082 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:17,082 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:17,217 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:17,394 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '759#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2021-11-25 18:50:17,394 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:17,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:17,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-25 18:50:17,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539595390] [2021-11-25 18:50:17,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:17,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:50:17,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:17,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:50:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:50:17,396 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:17,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:17,453 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-11-25 18:50:17,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:50:17,454 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 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 31 [2021-11-25 18:50:17,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:17,455 INFO L225 Difference]: With dead ends: 81 [2021-11-25 18:50:17,455 INFO L226 Difference]: Without dead ends: 80 [2021-11-25 18:50:17,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:50:17,457 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:17,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 65 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:17,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-25 18:50:17,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2021-11-25 18:50:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.095890410958904) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-11-25 18:50:17,466 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 31 [2021-11-25 18:50:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:17,467 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-11-25 18:50:17,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-11-25 18:50:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 18:50:17,468 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:17,469 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1] [2021-11-25 18:50:17,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:17,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 18:50:17,691 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:17,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:17,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1398897583, now seen corresponding path program 2 times [2021-11-25 18:50:17,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:17,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079034986] [2021-11-25 18:50:17,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:17,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:17,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079034986] [2021-11-25 18:50:17,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079034986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:17,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913481524] [2021-11-25 18:50:17,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:50:17,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:17,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:17,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:17,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:50:17,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:50:17,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:17,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:50:17,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:17,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:18,031 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:18,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913481524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:18,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1154362063] [2021-11-25 18:50:18,034 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:18,034 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:18,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:18,035 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:18,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:18,127 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:18,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1153#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:18,287 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:18,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:18,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-25 18:50:18,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941546807] [2021-11-25 18:50:18,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:18,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:50:18,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:50:18,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:50:18,290 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:18,326 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2021-11-25 18:50:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:50:18,327 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 18:50:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:18,328 INFO L225 Difference]: With dead ends: 79 [2021-11-25 18:50:18,328 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 18:50:18,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:50:18,330 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:18,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:50:18,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 18:50:18,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-25 18:50:18,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:18,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-11-25 18:50:18,338 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 34 [2021-11-25 18:50:18,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:18,338 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-11-25 18:50:18,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:18,339 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-11-25 18:50:18,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:50:18,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:18,341 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1] [2021-11-25 18:50:18,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:50:18,563 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1428056832, now seen corresponding path program 3 times [2021-11-25 18:50:18,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:18,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145772162] [2021-11-25 18:50:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:18,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:18,804 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 18:50:18,804 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:18,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145772162] [2021-11-25 18:50:18,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145772162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:18,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250099903] [2021-11-25 18:50:18,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:50:18,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:18,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:18,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:18,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:50:18,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:50:18,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:18,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:50:18,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:19,016 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 18:50:19,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:19,391 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 18:50:19,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250099903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2008229937] [2021-11-25 18:50:19,395 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:19,396 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:19,396 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:19,396 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:19,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:19,492 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:19,651 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1794#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:19,651 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:19,651 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:19,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-25 18:50:19,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451889212] [2021-11-25 18:50:19,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:19,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 18:50:19,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 18:50:19,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:50:19,653 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:19,747 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2021-11-25 18:50:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:50:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 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 73 [2021-11-25 18:50:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:19,754 INFO L225 Difference]: With dead ends: 171 [2021-11-25 18:50:19,754 INFO L226 Difference]: Without dead ends: 170 [2021-11-25 18:50:19,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:50:19,756 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 102 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:19,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 133 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:50:19,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-25 18:50:19,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2021-11-25 18:50:19,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0828025477707006) internal successors, (170), 158 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:19,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2021-11-25 18:50:19,787 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 73 [2021-11-25 18:50:19,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:19,789 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2021-11-25 18:50:19,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:19,790 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2021-11-25 18:50:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 18:50:19,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:19,792 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1] [2021-11-25 18:50:19,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:20,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:20,019 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:20,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:20,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1589970481, now seen corresponding path program 3 times [2021-11-25 18:50:20,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:20,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714508194] [2021-11-25 18:50:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:20,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:20,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714508194] [2021-11-25 18:50:20,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714508194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:20,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592545624] [2021-11-25 18:50:20,188 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:50:20,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:20,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:20,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:20,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:50:20,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:50:20,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:20,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:50:20,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:20,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:20,727 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:20,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592545624] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:20,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [276707574] [2021-11-25 18:50:20,729 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:20,729 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:20,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:20,730 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:20,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:20,804 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:20,966 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2650#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:20,966 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:20,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:20,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-25 18:50:20,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014237557] [2021-11-25 18:50:20,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:20,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 18:50:20,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:20,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 18:50:20,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:50:20,969 INFO L87 Difference]: Start difference. First operand 159 states and 170 transitions. Second operand has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:21,038 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2021-11-25 18:50:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:50:21,039 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 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 18:50:21,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:21,040 INFO L225 Difference]: With dead ends: 163 [2021-11-25 18:50:21,040 INFO L226 Difference]: Without dead ends: 162 [2021-11-25 18:50:21,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:50:21,042 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:21,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 122 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:50:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-25 18:50:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-25 18:50:21,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:21,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-11-25 18:50:21,050 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 76 [2021-11-25 18:50:21,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:21,051 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-11-25 18:50:21,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.608695652173913) internal successors, (152), 23 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-11-25 18:50:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-25 18:50:21,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:21,054 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1] [2021-11-25 18:50:21,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:21,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:21,275 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:21,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:21,275 INFO L85 PathProgramCache]: Analyzing trace with hash -85722944, now seen corresponding path program 4 times [2021-11-25 18:50:21,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:21,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219592662] [2021-11-25 18:50:21,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:21,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:21,683 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 18:50:21,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:21,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219592662] [2021-11-25 18:50:21,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219592662] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:21,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392370666] [2021-11-25 18:50:21,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:50:21,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:21,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:21,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:21,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:50:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:21,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:50:21,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:22,117 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 18:50:22,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:23,166 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 18:50:23,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392370666] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:23,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1921007991] [2021-11-25 18:50:23,174 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:23,174 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:23,175 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:23,175 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:23,175 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:23,267 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:23,453 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4011#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:23,453 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:23,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:23,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-25 18:50:23,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509956736] [2021-11-25 18:50:23,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:23,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:50:23,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:23,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:50:23,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:50:23,458 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:23,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:23,647 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2021-11-25 18:50:23,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 18:50:23,648 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 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 157 [2021-11-25 18:50:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:23,651 INFO L225 Difference]: With dead ends: 351 [2021-11-25 18:50:23,651 INFO L226 Difference]: Without dead ends: 350 [2021-11-25 18:50:23,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:50:23,654 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 185 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:23,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 261 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:50:23,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-25 18:50:23,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 327. [2021-11-25 18:50:23,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.0769230769230769) internal successors, (350), 326 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 350 transitions. [2021-11-25 18:50:23,666 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 350 transitions. Word has length 157 [2021-11-25 18:50:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:23,667 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 350 transitions. [2021-11-25 18:50:23,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.680851063829787) internal successors, (314), 47 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:23,667 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 350 transitions. [2021-11-25 18:50:23,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 18:50:23,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:23,670 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 1, 1] [2021-11-25 18:50:23,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:23,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 18:50:23,891 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:23,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1733361167, now seen corresponding path program 4 times [2021-11-25 18:50:23,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:23,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694134572] [2021-11-25 18:50:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:23,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:24,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:24,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694134572] [2021-11-25 18:50:24,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694134572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63878716] [2021-11-25 18:50:24,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:50:24,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:24,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:24,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:24,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:50:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:24,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:50:24,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:24,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:25,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63878716] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:25,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [787331181] [2021-11-25 18:50:25,808 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:25,808 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:25,808 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:25,808 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:25,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:25,888 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:26,104 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5791#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:26,104 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:26,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:26,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-25 18:50:26,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558435749] [2021-11-25 18:50:26,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:26,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:50:26,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:26,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:50:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:50:26,108 INFO L87 Difference]: Start difference. First operand 327 states and 350 transitions. Second operand has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:26,261 INFO L93 Difference]: Finished difference Result 331 states and 354 transitions. [2021-11-25 18:50:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 18:50:26,262 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 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 18:50:26,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:26,274 INFO L225 Difference]: With dead ends: 331 [2021-11-25 18:50:26,274 INFO L226 Difference]: Without dead ends: 330 [2021-11-25 18:50:26,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 449 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:50:26,276 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:26,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 245 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:50:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-25 18:50:26,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-11-25 18:50:26,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 329 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2021-11-25 18:50:26,287 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 160 [2021-11-25 18:50:26,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:26,288 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2021-11-25 18:50:26,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 47 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:26,289 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2021-11-25 18:50:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-25 18:50:26,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:26,293 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1] [2021-11-25 18:50:26,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:26,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-25 18:50:26,511 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:26,511 INFO L85 PathProgramCache]: Analyzing trace with hash -967270336, now seen corresponding path program 5 times [2021-11-25 18:50:26,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:26,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240721100] [2021-11-25 18:50:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:26,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:27,745 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 18:50:27,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240721100] [2021-11-25 18:50:27,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240721100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:27,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971252783] [2021-11-25 18:50:27,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:50:27,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:27,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:27,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:27,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:50:27,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 18:50:27,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:27,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:50:27,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:28,554 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 18:50:28,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:31,485 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 18:50:31,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971252783] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:31,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018906229] [2021-11-25 18:50:31,487 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:31,487 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:31,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:31,488 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:31,488 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:31,593 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:31,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8592#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:31,809 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:31,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:31,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-25 18:50:31,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426887797] [2021-11-25 18:50:31,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:31,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-25 18:50:31,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:31,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-25 18:50:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:50:31,818 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:32,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:32,313 INFO L93 Difference]: Finished difference Result 711 states and 758 transitions. [2021-11-25 18:50:32,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-25 18:50:32,314 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 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 325 [2021-11-25 18:50:32,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:32,319 INFO L225 Difference]: With dead ends: 711 [2021-11-25 18:50:32,320 INFO L226 Difference]: Without dead ends: 710 [2021-11-25 18:50:32,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:50:32,325 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 498 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:32,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 527 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:50:32,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-25 18:50:32,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 663. [2021-11-25 18:50:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 661 states have (on average 1.0741301059001513) internal successors, (710), 662 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 710 transitions. [2021-11-25 18:50:32,359 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 710 transitions. Word has length 325 [2021-11-25 18:50:32,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:32,360 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 710 transitions. [2021-11-25 18:50:32,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.842105263157895) internal successors, (650), 95 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 710 transitions. [2021-11-25 18:50:32,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-25 18:50:32,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:32,367 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 1, 1] [2021-11-25 18:50:32,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:32,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:32,583 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946161, now seen corresponding path program 5 times [2021-11-25 18:50:32,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:32,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708080974] [2021-11-25 18:50:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:32,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:33,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:33,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708080974] [2021-11-25 18:50:33,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708080974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:33,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684007472] [2021-11-25 18:50:33,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:50:33,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:33,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:33,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:50:33,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 18:50:33,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:33,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:50:33,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:34,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:37,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684007472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:37,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2043862452] [2021-11-25 18:50:37,287 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:37,287 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:37,287 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:37,287 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:37,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:37,370 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:37,583 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12220#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:50:37,583 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:37,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:37,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-25 18:50:37,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222710768] [2021-11-25 18:50:37,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:37,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-25 18:50:37,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:37,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-25 18:50:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:50:37,590 INFO L87 Difference]: Start difference. First operand 663 states and 710 transitions. Second operand has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:37,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:37,992 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-25 18:50:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-25 18:50:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 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 18:50:37,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:37,997 INFO L225 Difference]: With dead ends: 667 [2021-11-25 18:50:37,997 INFO L226 Difference]: Without dead ends: 666 [2021-11-25 18:50:38,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:50:38,002 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 94 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:38,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 482 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:50:38,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-25 18:50:38,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2021-11-25 18:50:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 664 states have (on average 1.0030120481927711) internal successors, (666), 665 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:38,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 666 transitions. [2021-11-25 18:50:38,021 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 666 transitions. Word has length 328 [2021-11-25 18:50:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:38,022 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 666 transitions. [2021-11-25 18:50:38,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.905263157894737) internal successors, (656), 95 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 666 transitions. [2021-11-25 18:50:38,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-25 18:50:38,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:38,040 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 1, 1] [2021-11-25 18:50:38,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:38,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 18:50:38,254 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:38,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:38,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1019121856, now seen corresponding path program 6 times [2021-11-25 18:50:38,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:38,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460477777] [2021-11-25 18:50:38,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:38,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:41,776 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 18:50:41,776 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:41,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460477777] [2021-11-25 18:50:41,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460477777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:41,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167619004] [2021-11-25 18:50:41,777 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:50:41,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:41,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:41,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:41,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:50:41,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:50:41,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:41,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 18:50:41,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:50:43,213 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 18:50:43,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:50:52,513 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 18:50:52,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167619004] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:50:52,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598363571] [2021-11-25 18:50:52,516 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:50:52,516 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:50:52,516 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:50:52,516 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:50:52,516 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:50:52,590 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:50:52,990 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17901#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2021-11-25 18:50:52,990 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:50:52,990 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:50:52,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-25 18:50:52,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213505288] [2021-11-25 18:50:52,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:50:52,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-25 18:50:52,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:50:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-25 18:50:53,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18358, Invalid=20648, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:50:53,010 INFO L87 Difference]: Start difference. First operand 666 states and 666 transitions. Second operand has 192 states, 191 states have (on average 6.9214659685863875) internal successors, (1322), 191 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:55,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:50:55,162 INFO L93 Difference]: Finished difference Result 1431 states and 1526 transitions. [2021-11-25 18:50:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-25 18:50:55,164 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.9214659685863875) internal successors, (1322), 191 states have internal predecessors, (1322), 0 states have call successors, (0), 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 661 [2021-11-25 18:50:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:50:55,172 INFO L225 Difference]: With dead ends: 1431 [2021-11-25 18:50:55,172 INFO L226 Difference]: Without dead ends: 1430 [2021-11-25 18:50:55,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 1880 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=18358, Invalid=20648, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:50:55,178 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1005 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:50:55,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1055 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:50:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-11-25 18:50:55,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1335. [2021-11-25 18:50:55,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 1333 states have (on average 1.072768192048012) internal successors, (1430), 1334 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1430 transitions. [2021-11-25 18:50:55,225 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1430 transitions. Word has length 661 [2021-11-25 18:50:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:50:55,227 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1430 transitions. [2021-11-25 18:50:55,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.9214659685863875) internal successors, (1322), 191 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:50:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1430 transitions. [2021-11-25 18:50:55,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2021-11-25 18:50:55,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:50:55,252 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 94, 1, 1] [2021-11-25 18:50:55,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:50:55,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 18:50:55,467 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:50:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:50:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash 464648079, now seen corresponding path program 6 times [2021-11-25 18:50:55,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:50:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822004144] [2021-11-25 18:50:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:50:55,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:50:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:50:58,900 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:50:58,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:50:58,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822004144] [2021-11-25 18:50:58,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822004144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:50:58,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36769137] [2021-11-25 18:50:58,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:50:58,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:50:58,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:50:58,901 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:50:58,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 18:50:59,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:50:59,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:50:59,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 18:50:59,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:00,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:51:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 31067 backedges. 0 proven. 31067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:10,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36769137] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:51:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1980563760] [2021-11-25 18:51:10,046 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:51:10,047 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:51:10,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:51:10,047 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:51:10,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:51:10,120 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:51:10,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25225#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:51:10,532 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:51:10,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:51:10,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-25 18:51:10,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446130361] [2021-11-25 18:51:10,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:51:10,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-25 18:51:10,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:51:10,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-25 18:51:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18355, Invalid=20651, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:51:10,548 INFO L87 Difference]: Start difference. First operand 1335 states and 1430 transitions. Second operand has 192 states, 191 states have (on average 6.952879581151833) internal successors, (1328), 191 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:51:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:51:12,143 INFO L93 Difference]: Finished difference Result 1339 states and 1434 transitions. [2021-11-25 18:51:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-25 18:51:12,144 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.952879581151833) internal successors, (1328), 191 states have internal predecessors, (1328), 0 states have call successors, (0), 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 18:51:12,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:51:12,152 INFO L225 Difference]: With dead ends: 1339 [2021-11-25 18:51:12,152 INFO L226 Difference]: Without dead ends: 1338 [2021-11-25 18:51:12,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2085 GetRequests, 1889 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=18355, Invalid=20651, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:51:12,156 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 190 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:51:12,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 965 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 18:51:12,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-25 18:51:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2021-11-25 18:51:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 1336 states have (on average 1.001497005988024) internal successors, (1338), 1337 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:51:12,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1338 transitions. [2021-11-25 18:51:12,193 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1338 transitions. Word has length 664 [2021-11-25 18:51:12,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:51:12,195 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1338 transitions. [2021-11-25 18:51:12,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.952879581151833) internal successors, (1328), 191 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:51:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1338 transitions. [2021-11-25 18:51:12,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1334 [2021-11-25 18:51:12,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:51:12,212 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 1, 1] [2021-11-25 18:51:12,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:51:12,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 18:51:12,439 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:51:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:51:12,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1460735296, now seen corresponding path program 7 times [2021-11-25 18:51:12,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:51:12,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134746716] [2021-11-25 18:51:12,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:51:12,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:51:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:24,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:51:24,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134746716] [2021-11-25 18:51:24,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134746716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:51:24,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756353025] [2021-11-25 18:51:24,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:51:24,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:51:24,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:51:24,928 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:51:24,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 18:51:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:51:25,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-25 18:51:25,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:51:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:51:27,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:52:03,079 INFO L134 CoverageAnalysis]: Checked inductivity of 126065 backedges. 0 proven. 126065 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:52:03,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756353025] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:52:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2034431906] [2021-11-25 18:52:03,081 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:52:03,081 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:52:03,081 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:52:03,081 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:52:03,081 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:52:03,139 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:52:03,753 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36666#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2021-11-25 18:52:03,753 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:52:03,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:52:03,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-25 18:52:03,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231590983] [2021-11-25 18:52:03,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:52:03,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-25 18:52:03,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:52:03,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-25 18:52:03,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73558, Invalid=78152, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:52:03,780 INFO L87 Difference]: Start difference. First operand 1338 states and 1338 transitions. Second operand has 384 states, 383 states have (on average 6.960835509138382) internal successors, (2666), 383 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:52:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:52:17,402 INFO L93 Difference]: Finished difference Result 2871 states and 3062 transitions. [2021-11-25 18:52:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-25 18:52:17,404 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.960835509138382) internal successors, (2666), 383 states have internal predecessors, (2666), 0 states have call successors, (0), 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 1333 [2021-11-25 18:52:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:52:17,420 INFO L225 Difference]: With dead ends: 2871 [2021-11-25 18:52:17,420 INFO L226 Difference]: Without dead ends: 2870 [2021-11-25 18:52:17,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4188 GetRequests, 3800 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3431 ImplicationChecksByTransitivity, 45.0s TimeCoverageRelationStatistics Valid=73558, Invalid=78152, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:52:17,433 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2194 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:52:17,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 2114 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:52:17,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-11-25 18:52:17,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2679. [2021-11-25 18:52:17,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 2677 states have (on average 1.0720956294359358) internal successors, (2870), 2678 states have internal predecessors, (2870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:52:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 2870 transitions. [2021-11-25 18:52:17,506 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 2870 transitions. Word has length 1333 [2021-11-25 18:52:17,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:52:17,508 INFO L470 AbstractCegarLoop]: Abstraction has 2679 states and 2870 transitions. [2021-11-25 18:52:17,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.960835509138382) internal successors, (2666), 383 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:52:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 2870 transitions. [2021-11-25 18:52:17,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2021-11-25 18:52:17,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:52:17,564 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 190, 1, 1] [2021-11-25 18:52:17,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:52:17,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:52:17,779 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:52:17,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:52:17,779 INFO L85 PathProgramCache]: Analyzing trace with hash 156604815, now seen corresponding path program 7 times [2021-11-25 18:52:17,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:52:17,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888217083] [2021-11-25 18:52:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:52:17,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:52:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 126635 backedges. 0 proven. 126635 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:52:31,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:52:31,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888217083] [2021-11-25 18:52:31,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888217083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:52:31,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596177415] [2021-11-25 18:52:31,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:52:31,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:52:31,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:52:31,450 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:52:31,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:52:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:52:31,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-25 18:52:31,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:52:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 126635 backedges. 0 proven. 126635 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:52:34,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:53:10,684 INFO L134 CoverageAnalysis]: Checked inductivity of 126635 backedges. 0 proven. 126635 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:53:10,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596177415] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:53:10,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2054116437] [2021-11-25 18:53:10,686 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:53:10,686 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:53:10,687 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:53:10,687 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:53:10,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:53:10,752 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:53:11,376 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51382#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 0 |ULTIMATE.start_main_~z~0#1|))' at error location [2021-11-25 18:53:11,376 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:53:11,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:53:11,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-25 18:53:11,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821136187] [2021-11-25 18:53:11,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:53:11,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-25 18:53:11,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:53:11,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-25 18:53:11,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73555, Invalid=78155, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:53:11,408 INFO L87 Difference]: Start difference. First operand 2679 states and 2870 transitions. Second operand has 384 states, 383 states have (on average 6.976501305483029) internal successors, (2672), 383 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:53:19,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:53:19,828 INFO L93 Difference]: Finished difference Result 2683 states and 2874 transitions. [2021-11-25 18:53:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-25 18:53:19,829 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.976501305483029) internal successors, (2672), 383 states have internal predecessors, (2672), 0 states have call successors, (0), 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 1336 [2021-11-25 18:53:19,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:53:19,844 INFO L225 Difference]: With dead ends: 2683 [2021-11-25 18:53:19,844 INFO L226 Difference]: Without dead ends: 2682 [2021-11-25 18:53:19,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4197 GetRequests, 3809 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=73555, Invalid=78155, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:53:19,856 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 382 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:53:19,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1926 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 18:53:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-11-25 18:53:19,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2021-11-25 18:53:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2680 states have (on average 1.0007462686567163) internal successors, (2682), 2681 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:53:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 2682 transitions. [2021-11-25 18:53:19,921 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 2682 transitions. Word has length 1336 [2021-11-25 18:53:19,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:53:19,924 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 2682 transitions. [2021-11-25 18:53:19,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.976501305483029) internal successors, (2672), 383 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:53:19,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 2682 transitions. [2021-11-25 18:53:19,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2678 [2021-11-25 18:53:19,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:53:19,978 INFO L514 BasicCegarLoop]: trace histogram [383, 382, 382, 382, 382, 382, 382, 1, 1] [2021-11-25 18:53:20,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:53:20,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:53:20,195 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:53:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:53:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash -156743360, now seen corresponding path program 8 times [2021-11-25 18:53:20,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:53:20,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733226528] [2021-11-25 18:53:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:53:20,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:53:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:54:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 510161 backedges. 0 proven. 510161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:09,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:54:09,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733226528] [2021-11-25 18:54:09,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733226528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:54:09,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037139088] [2021-11-25 18:54:09,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:54:09,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:54:09,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:54:09,288 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:54:09,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 18:54:14,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-25 18:54:14,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:54:14,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 4976 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-25 18:54:14,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:54:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 510161 backedges. 0 proven. 510161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:54:19,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:56:38,564 INFO L134 CoverageAnalysis]: Checked inductivity of 510161 backedges. 0 proven. 510161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:56:38,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037139088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:56:38,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1905491001] [2021-11-25 18:56:38,567 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:56:38,567 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:56:38,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:56:38,568 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:56:38,568 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:56:38,622 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:56:39,773 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74343#(and (< 0 |ULTIMATE.start_main_~z~0#1|) (<= (+ |ULTIMATE.start_main_~y~0#1| 1) 0) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~z~0#1| 2147483646) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 2147483648)))' at error location [2021-11-25 18:56:39,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:56:39,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:56:39,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2021-11-25 18:56:39,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548447262] [2021-11-25 18:56:39,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:56:39,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-11-25 18:56:39,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:56:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-11-25 18:56:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294550, Invalid=303752, Unknown=0, NotChecked=0, Total=598302 [2021-11-25 18:56:39,956 INFO L87 Difference]: Start difference. First operand 2682 states and 2682 transitions. Second operand has 768 states, 767 states have (on average 6.980443285528032) internal successors, (5354), 767 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:58:23,949 INFO L93 Difference]: Finished difference Result 5751 states and 6134 transitions. [2021-11-25 18:58:23,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2021-11-25 18:58:23,952 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 6.980443285528032) internal successors, (5354), 767 states have internal predecessors, (5354), 0 states have call successors, (0), 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 2677 [2021-11-25 18:58:23,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:58:23,980 INFO L225 Difference]: With dead ends: 5751 [2021-11-25 18:58:23,980 INFO L226 Difference]: Without dead ends: 5750 [2021-11-25 18:58:24,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8412 GetRequests, 7640 SyntacticMatches, 0 SemanticMatches, 772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6887 ImplicationChecksByTransitivity, 180.5s TimeCoverageRelationStatistics Valid=294550, Invalid=303752, Unknown=0, NotChecked=0, Total=598302 [2021-11-25 18:58:24,008 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4728 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4728 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:58:24,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 4226 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 18:58:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2021-11-25 18:58:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5367. [2021-11-25 18:58:24,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5367 states, 5365 states have (on average 1.0717614165890028) internal successors, (5750), 5366 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 5750 transitions. [2021-11-25 18:58:24,129 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 5750 transitions. Word has length 2677 [2021-11-25 18:58:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:58:24,210 INFO L470 AbstractCegarLoop]: Abstraction has 5367 states and 5750 transitions. [2021-11-25 18:58:24,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 6.980443285528032) internal successors, (5354), 767 states have internal predecessors, (5354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:58:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 5750 transitions. [2021-11-25 18:58:24,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2681 [2021-11-25 18:58:24,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:58:24,266 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 382, 1, 1] [2021-11-25 18:58:24,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:58:24,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:58:24,471 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 18:58:24,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:58:24,471 INFO L85 PathProgramCache]: Analyzing trace with hash -911942257, now seen corresponding path program 8 times [2021-11-25 18:58:24,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:58:24,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135464347] [2021-11-25 18:58:24,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:58:24,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:58:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:14,012 INFO L134 CoverageAnalysis]: Checked inductivity of 511307 backedges. 0 proven. 511307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:14,012 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:14,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135464347] [2021-11-25 18:59:14,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135464347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:14,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476082647] [2021-11-25 18:59:14,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:59:14,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:14,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:14,014 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:14,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ea99ece3-05c5-45d8-bfb1-68eeea44d65d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 18:59:18,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-25 18:59:18,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:59:18,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 4981 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-25 18:59:18,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 511307 backedges. 0 proven. 511307 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:22,776 INFO L328 TraceCheckSpWp]: Computing backward predicates...