./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-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_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/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_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/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_1f0ec909-d822-48f1-9dc2-f47205f9a721/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 0caa59e1faf0ad3d2791737919ecbef32e653ee10212e2c418a84055594f6a3c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:03:33,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:03:33,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:03:33,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:03:33,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:03:33,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:03:33,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:03:33,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:03:33,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:03:33,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:03:33,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:03:33,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:03:33,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:03:33,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:03:33,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:03:33,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:03:33,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:03:33,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:03:33,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:03:33,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:03:33,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:03:33,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:03:33,244 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:03:33,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:03:33,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:03:33,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:03:33,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:03:33,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:03:33,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:03:33,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:03:33,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:03:33,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:03:33,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:03:33,265 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:03:33,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:03:33,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:03:33,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:03:33,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:03:33,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:03:33,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:03:33,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:03:33,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 18:03:33,312 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:03:33,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:03:33,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:03:33,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:03:33,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:03:33,321 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:03:33,322 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:03:33,322 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:03:33,322 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:03:33,323 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:03:33,324 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:03:33,324 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:03:33,324 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:03:33,325 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:03:33,325 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:03:33,325 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:03:33,325 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:03:33,326 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:03:33,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:03:33,327 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 18:03:33,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:03:33,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:03:33,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:03:33,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:03:33,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:03:33,329 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 18:03:33,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:03:33,331 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:03:33,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:03:33,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:03:33,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:03:33,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:03:33,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:03:33,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:03:33,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:03:33,333 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:03:33,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:03:33,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:03:33,334 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:03:33,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:03:33,334 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_1f0ec909-d822-48f1-9dc2-f47205f9a721/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0caa59e1faf0ad3d2791737919ecbef32e653ee10212e2c418a84055594f6a3c [2021-11-25 18:03:33,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:03:33,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:03:33,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:03:33,668 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:03:33,669 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:03:33,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2021-11-25 18:03:33,759 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/data/eb202af73/161bebdc398144c7a9d2b6a8066a385c/FLAG9e101d48a [2021-11-25 18:03:34,258 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:03:34,260 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2021-11-25 18:03:34,271 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/data/eb202af73/161bebdc398144c7a9d2b6a8066a385c/FLAG9e101d48a [2021-11-25 18:03:34,638 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/data/eb202af73/161bebdc398144c7a9d2b6a8066a385c [2021-11-25 18:03:34,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:03:34,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:03:34,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:03:34,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:03:34,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:03:34,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e53fc7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34, skipping insertion in model container [2021-11-25 18:03:34,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:03:34,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:03:34,850 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:03:34,882 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:03:34,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:03:34,911 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:03:34,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34 WrapperNode [2021-11-25 18:03:34,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:03:34,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:03:34,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:03:34,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:03:34,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,925 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,942 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2021-11-25 18:03:34,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:03:34,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:03:34,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:03:34,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:03:34,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:03:34,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:03:34,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:03:34,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:03:34,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (1/1) ... [2021-11-25 18:03:34,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:03:34,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:35,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:03:35,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:03:35,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:03:35,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:03:35,103 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:03:35,105 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:03:35,226 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:03:35,250 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:03:35,250 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 18:03:35,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:35 BoogieIcfgContainer [2021-11-25 18:03:35,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:03:35,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:03:35,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:03:35,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:03:35,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:03:34" (1/3) ... [2021-11-25 18:03:35,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401f4605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:03:35, skipping insertion in model container [2021-11-25 18:03:35,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:03:34" (2/3) ... [2021-11-25 18:03:35,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401f4605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:03:35, skipping insertion in model container [2021-11-25 18:03:35,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:03:35" (3/3) ... [2021-11-25 18:03:35,262 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-easy2-2.c [2021-11-25 18:03:35,268 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:03:35,268 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 18:03:35,327 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:03:35,339 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 18:03:35,339 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 18:03:35,356 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 18:03:35,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-25 18:03:35,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:35,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-25 18:03:35,383 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 18:03:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2021-11-25 18:03:35,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:35,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756863726] [2021-11-25 18:03:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:35,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:35,563 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 18:03:35,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:35,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756863726] [2021-11-25 18:03:35,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756863726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:35,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:35,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:03:35,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890170282] [2021-11-25 18:03:35,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:35,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:35,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:35,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:35,609 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 18:03:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:35,675 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-25 18:03:35,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:35,678 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 18:03:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:35,686 INFO L225 Difference]: With dead ends: 20 [2021-11-25 18:03:35,686 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:03:35,689 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 18:03:35,709 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 18:03:35,725 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 18:03:35,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:03:35,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-25 18:03:35,784 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 18:03:35,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-25 18:03:35,786 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-11-25 18:03:35,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:35,787 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-25 18:03:35,787 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 18:03:35,787 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-25 18:03:35,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 18:03:35,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:35,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 18:03:35,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:03:35,789 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 18:03:35,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:35,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2021-11-25 18:03:35,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:35,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546592596] [2021-11-25 18:03:35,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:35,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:35,807 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 18:03:35,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:35,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546592596] [2021-11-25 18:03:35,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546592596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:35,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:35,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:03:35,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104765440] [2021-11-25 18:03:35,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:35,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:35,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:35,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:35,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:35,812 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 18:03:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:35,821 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-25 18:03:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:35,822 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 18:03:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:35,823 INFO L225 Difference]: With dead ends: 16 [2021-11-25 18:03:35,823 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:03:35,824 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 18:03:35,826 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 18:03:35,826 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 18:03:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:03:35,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:03:35,830 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 18:03:35,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:03:35,831 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2021-11-25 18:03:35,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:35,831 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:03:35,832 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 18:03:35,832 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:03:35,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 18:03:35,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:35,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 18:03:35,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 18:03:35,833 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 18:03:35,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:35,834 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2021-11-25 18:03:35,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:35,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871519501] [2021-11-25 18:03:35,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:35,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:35,860 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 18:03:35,861 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:35,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871519501] [2021-11-25 18:03:35,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871519501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:35,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:35,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:03:35,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650870765] [2021-11-25 18:03:35,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:35,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:35,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:35,869 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 18:03:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:35,885 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-25 18:03:35,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:35,887 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 18:03:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:35,888 INFO L225 Difference]: With dead ends: 15 [2021-11-25 18:03:35,891 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 18:03:35,892 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 18:03:35,894 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 18:03:35,895 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 18:03:35,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 18:03:35,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 18:03:35,903 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 18:03:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-25 18:03:35,905 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-25 18:03:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:35,905 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-25 18:03:35,906 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 18:03:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-25 18:03:35,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-25 18:03:35,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:35,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-25 18:03:35,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 18:03:35,908 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 18:03:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:35,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2021-11-25 18:03:35,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22613278] [2021-11-25 18:03:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:35,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:35,930 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 18:03:35,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22613278] [2021-11-25 18:03:35,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22613278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:35,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:35,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:03:35,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811668679] [2021-11-25 18:03:35,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:35,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:35,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:35,934 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 18:03:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:35,944 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-25 18:03:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:35,945 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 18:03:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:35,946 INFO L225 Difference]: With dead ends: 18 [2021-11-25 18:03:35,946 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 18:03:35,946 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 18:03:35,948 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 18:03:35,949 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 18:03:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 18:03:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 18:03:35,953 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 18:03:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-25 18:03:35,954 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-25 18:03:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:35,954 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-25 18:03:35,955 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 18:03:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-25 18:03:35,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 18:03:35,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:35,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:35,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 18:03:35,957 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 18:03:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2021-11-25 18:03:35,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:35,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855860350] [2021-11-25 18:03:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:35,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:35,979 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 18:03:35,983 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:35,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855860350] [2021-11-25 18:03:35,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855860350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:35,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:35,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 18:03:35,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045860776] [2021-11-25 18:03:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:35,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:35,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:35,990 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 18:03:36,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:36,005 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-25 18:03:36,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:36,006 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 18:03:36,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:36,008 INFO L225 Difference]: With dead ends: 17 [2021-11-25 18:03:36,008 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 18:03:36,009 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 18:03:36,014 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 18:03:36,017 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 18:03:36,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 18:03:36,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 18:03:36,020 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 18:03:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-25 18:03:36,021 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-25 18:03:36,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:36,022 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-25 18:03:36,022 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 18:03:36,022 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-25 18:03:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:03:36,023 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:36,023 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:36,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 18:03:36,024 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 18:03:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2021-11-25 18:03:36,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:36,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207873975] [2021-11-25 18:03:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:36,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:36,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:36,048 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 18:03:36,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:36,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207873975] [2021-11-25 18:03:36,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207873975] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:03:36,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:03:36,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:03:36,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786539537] [2021-11-25 18:03:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:03:36,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:03:36,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:03:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:03:36,051 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 18:03:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:36,066 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-25 18:03:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:03:36,069 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 18:03:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:36,070 INFO L225 Difference]: With dead ends: 16 [2021-11-25 18:03:36,070 INFO L226 Difference]: Without dead ends: 15 [2021-11-25 18:03:36,071 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 18:03:36,072 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 18:03:36,072 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 18:03:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-25 18:03:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-25 18:03:36,075 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 18:03:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-25 18:03:36,076 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-25 18:03:36,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:36,077 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-25 18:03:36,077 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 18:03:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-25 18:03:36,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:03:36,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:36,078 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:03:36,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 18:03:36,078 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 18:03:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -83337101, now seen corresponding path program 1 times [2021-11-25 18:03:36,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:36,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770951722] [2021-11-25 18:03:36,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:36,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:36,109 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 18:03:36,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770951722] [2021-11-25 18:03:36,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770951722] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668148809] [2021-11-25 18:03:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:36,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:36,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:36,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:36,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:03:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:36,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:03:36,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:36,228 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 18:03:36,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:36,297 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 18:03:36,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668148809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:36,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1595711204] [2021-11-25 18:03:36,330 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:36,331 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:36,336 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:36,342 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:36,342 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:36,707 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:36,934 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 18:03:36,934 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:36,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:36,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-25 18:03:36,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277373295] [2021-11-25 18:03:36,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:36,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:03:36,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:36,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:03:36,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:03:36,940 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 18:03:36,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:36,987 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-11-25 18:03:36,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:03:36,988 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 18:03:36,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:36,990 INFO L225 Difference]: With dead ends: 36 [2021-11-25 18:03:36,990 INFO L226 Difference]: Without dead ends: 35 [2021-11-25 18:03:36,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:03:36,993 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 18:03:36,994 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 18:03:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-25 18:03:37,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-11-25 18:03:37,007 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 18:03:37,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-25 18:03:37,008 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 10 [2021-11-25 18:03:37,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:37,008 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-25 18:03:37,008 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 18:03:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-25 18:03:37,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 18:03:37,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:37,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-25 18:03:37,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:37,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:37,228 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 18:03:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -204434052, now seen corresponding path program 1 times [2021-11-25 18:03:37,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:37,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177603951] [2021-11-25 18:03:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:37,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:37,273 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 18:03:37,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:37,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177603951] [2021-11-25 18:03:37,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177603951] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:37,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300308466] [2021-11-25 18:03:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:37,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:37,278 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:37,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:03:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:37,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:03:37,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:37,393 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 18:03:37,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:37,450 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 18:03:37,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300308466] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:37,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [549968814] [2021-11-25 18:03:37,455 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:37,456 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:37,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:37,457 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:37,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:37,579 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:37,748 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 18:03:37,748 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:37,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:37,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2021-11-25 18:03:37,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824999992] [2021-11-25 18:03:37,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:37,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:03:37,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:03:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:03:37,750 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 18:03:37,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:37,777 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-11-25 18:03:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:03:37,778 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 18:03:37,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:37,778 INFO L225 Difference]: With dead ends: 37 [2021-11-25 18:03:37,779 INFO L226 Difference]: Without dead ends: 36 [2021-11-25 18:03:37,779 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 18:03:37,782 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 18:03:37,783 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 18:03:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-25 18:03:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-25 18:03:37,792 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 18:03:37,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-11-25 18:03:37,794 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 13 [2021-11-25 18:03:37,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:37,798 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-11-25 18:03:37,799 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 18:03:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-11-25 18:03:37,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 18:03:37,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:37,804 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1] [2021-11-25 18:03:37,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:38,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:38,032 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 18:03:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2101518560, now seen corresponding path program 2 times [2021-11-25 18:03:38,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:38,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397695941] [2021-11-25 18:03:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:38,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:38,111 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 18:03:38,112 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397695941] [2021-11-25 18:03:38,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397695941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:38,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971881241] [2021-11-25 18:03:38,113 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:03:38,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:38,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:38,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:38,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:03:38,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:03:38,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:03:38,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:03:38,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:38,248 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 18:03:38,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:38,377 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 18:03:38,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971881241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:38,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1824197198] [2021-11-25 18:03:38,381 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:38,381 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:38,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:38,382 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:38,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:38,520 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:38,689 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 18:03:38,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:38,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:38,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-25 18:03:38,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448663402] [2021-11-25 18:03:38,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:38,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:03:38,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:38,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:03:38,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:03:38,692 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 18:03:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:38,750 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-11-25 18:03:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:03:38,751 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 18:03:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:38,754 INFO L225 Difference]: With dead ends: 81 [2021-11-25 18:03:38,754 INFO L226 Difference]: Without dead ends: 80 [2021-11-25 18:03:38,755 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 18:03:38,757 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 18:03:38,757 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 18:03:38,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-25 18:03:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2021-11-25 18:03:38,772 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 18:03:38,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-11-25 18:03:38,777 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 31 [2021-11-25 18:03:38,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:38,777 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-11-25 18:03:38,777 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 18:03:38,778 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-11-25 18:03:38,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 18:03:38,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:38,780 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1] [2021-11-25 18:03:38,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:38,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 18:03:38,996 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 18:03:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1398897583, now seen corresponding path program 2 times [2021-11-25 18:03:38,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:38,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153651849] [2021-11-25 18:03:38,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:38,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:39,060 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 18:03:39,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153651849] [2021-11-25 18:03:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153651849] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142617689] [2021-11-25 18:03:39,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:03:39,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:39,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:39,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:39,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:03:39,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-25 18:03:39,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:03:39,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:03:39,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:39,170 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 18:03:39,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:39,304 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 18:03:39,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142617689] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:39,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1738744838] [2021-11-25 18:03:39,307 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:39,307 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:39,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:39,308 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:39,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:39,434 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:39,593 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 18:03:39,593 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:39,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:39,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-11-25 18:03:39,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644229689] [2021-11-25 18:03:39,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:39,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:03:39,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:39,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:03:39,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-11-25 18:03:39,596 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 18:03:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:39,646 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2021-11-25 18:03:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:03:39,646 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 18:03:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:39,649 INFO L225 Difference]: With dead ends: 79 [2021-11-25 18:03:39,650 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 18:03:39,650 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 18:03:39,651 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 18:03:39,652 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 18:03:39,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 18:03:39,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-25 18:03:39,671 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 18:03:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-11-25 18:03:39,673 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 34 [2021-11-25 18:03:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:39,674 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-11-25 18:03:39,674 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 18:03:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-11-25 18:03:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-25 18:03:39,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:39,678 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1] [2021-11-25 18:03:39,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:39,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 18:03:39,904 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 18:03:39,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1428056832, now seen corresponding path program 3 times [2021-11-25 18:03:39,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:39,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112246700] [2021-11-25 18:03:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:39,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:40,069 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 18:03:40,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:40,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112246700] [2021-11-25 18:03:40,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112246700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:40,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215307161] [2021-11-25 18:03:40,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:03:40,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:40,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:40,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:40,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:03:40,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:03:40,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:03:40,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:03:40,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:40,275 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 18:03:40,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:40,621 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 18:03:40,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215307161] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:40,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [124931226] [2021-11-25 18:03:40,624 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:40,624 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:40,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:40,625 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:40,625 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:40,737 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:40,929 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1794#(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 18:03:40,929 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:40,929 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:40,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-25 18:03:40,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324774386] [2021-11-25 18:03:40,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:40,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 18:03:40,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 18:03:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:03:40,932 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 18:03:41,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:41,032 INFO L93 Difference]: Finished difference Result 171 states and 182 transitions. [2021-11-25 18:03:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:03:41,033 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 18:03:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:41,036 INFO L225 Difference]: With dead ends: 171 [2021-11-25 18:03:41,037 INFO L226 Difference]: Without dead ends: 170 [2021-11-25 18:03:41,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:03:41,038 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 102 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 18:03:41,039 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 18:03:41,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-25 18:03:41,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2021-11-25 18:03:41,057 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 18:03:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 170 transitions. [2021-11-25 18:03:41,058 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 170 transitions. Word has length 73 [2021-11-25 18:03:41,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:41,060 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 170 transitions. [2021-11-25 18:03:41,061 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 18:03:41,061 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 170 transitions. [2021-11-25 18:03:41,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-25 18:03:41,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:41,067 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1] [2021-11-25 18:03:41,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:41,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:41,287 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 18:03:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:41,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1589970481, now seen corresponding path program 3 times [2021-11-25 18:03:41,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:41,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716945926] [2021-11-25 18:03:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:41,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:41,463 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 18:03:41,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:41,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716945926] [2021-11-25 18:03:41,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716945926] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375571547] [2021-11-25 18:03:41,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:03:41,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:41,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:41,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:41,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:03:41,513 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:03:41,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:03:41,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:03:41,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:41,692 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 18:03:41,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:42,068 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 18:03:42,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375571547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:42,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [16836506] [2021-11-25 18:03:42,070 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:42,071 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:42,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:42,071 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:42,072 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:42,166 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:42,343 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 18:03:42,343 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:42,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:42,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2021-11-25 18:03:42,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62047911] [2021-11-25 18:03:42,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:42,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 18:03:42,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:42,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 18:03:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=575, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:03:42,346 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 18:03:42,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:42,429 INFO L93 Difference]: Finished difference Result 163 states and 174 transitions. [2021-11-25 18:03:42,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 18:03:42,430 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 18:03:42,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:42,431 INFO L225 Difference]: With dead ends: 163 [2021-11-25 18:03:42,431 INFO L226 Difference]: Without dead ends: 162 [2021-11-25 18:03:42,432 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 18:03:42,433 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 18:03:42,433 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 18:03:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-25 18:03:42,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-25 18:03:42,439 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 18:03:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-11-25 18:03:42,440 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 76 [2021-11-25 18:03:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:42,440 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-11-25 18:03:42,440 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 18:03:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-11-25 18:03:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-25 18:03:42,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:42,442 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1] [2021-11-25 18:03:42,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:42,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-25 18:03:42,656 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 18:03:42,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -85722944, now seen corresponding path program 4 times [2021-11-25 18:03:42,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:42,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686992935] [2021-11-25 18:03:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:42,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:43,091 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 18:03:43,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:43,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686992935] [2021-11-25 18:03:43,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686992935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:43,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562029901] [2021-11-25 18:03:43,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:03:43,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:43,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:43,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:43,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 18:03:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:43,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:03:43,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:43,508 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 18:03:43,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:44,479 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 18:03:44,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562029901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1122738135] [2021-11-25 18:03:44,482 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:44,483 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:44,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:44,483 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:44,483 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:44,568 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:44,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4011#(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 18:03:44,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:44,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:44,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-25 18:03:44,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817196546] [2021-11-25 18:03:44,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:44,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:03:44,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:03:44,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1150, Invalid=1712, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:03:44,799 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 18:03:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:44,980 INFO L93 Difference]: Finished difference Result 351 states and 374 transitions. [2021-11-25 18:03:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 18:03:44,981 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 18:03:44,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:44,984 INFO L225 Difference]: With dead ends: 351 [2021-11-25 18:03:44,984 INFO L226 Difference]: Without dead ends: 350 [2021-11-25 18:03:44,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1150, Invalid=1712, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:03:44,987 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 18:03:44,987 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 18:03:44,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-25 18:03:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 327. [2021-11-25 18:03:44,997 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 18:03:44,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 350 transitions. [2021-11-25 18:03:44,999 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 350 transitions. Word has length 157 [2021-11-25 18:03:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:44,999 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 350 transitions. [2021-11-25 18:03:45,000 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 18:03:45,000 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 350 transitions. [2021-11-25 18:03:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-25 18:03:45,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:45,002 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 1, 1] [2021-11-25 18:03:45,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:45,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-25 18:03:45,215 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 18:03:45,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:45,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1733361167, now seen corresponding path program 4 times [2021-11-25 18:03:45,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:45,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126383375] [2021-11-25 18:03:45,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:45,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:45,642 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 18:03:45,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126383375] [2021-11-25 18:03:45,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126383375] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119605691] [2021-11-25 18:03:45,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:03:45,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:45,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:45,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:45,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 18:03:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:45,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-25 18:03:45,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:46,091 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 18:03:46,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:47,128 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 18:03:47,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119605691] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [767004890] [2021-11-25 18:03:47,131 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:47,131 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:47,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:47,133 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:47,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:47,218 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:47,433 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 18:03:47,433 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:47,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:47,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2021-11-25 18:03:47,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674660498] [2021-11-25 18:03:47,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:47,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-25 18:03:47,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-25 18:03:47,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1147, Invalid=1715, Unknown=0, NotChecked=0, Total=2862 [2021-11-25 18:03:47,437 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 18:03:47,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:47,592 INFO L93 Difference]: Finished difference Result 331 states and 354 transitions. [2021-11-25 18:03:47,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-25 18:03:47,593 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 18:03:47,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:47,598 INFO L225 Difference]: With dead ends: 331 [2021-11-25 18:03:47,598 INFO L226 Difference]: Without dead ends: 330 [2021-11-25 18:03:47,599 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 18:03:47,600 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 18:03:47,601 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 18:03:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-25 18:03:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-11-25 18:03:47,611 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 18:03:47,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2021-11-25 18:03:47,612 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 160 [2021-11-25 18:03:47,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:47,613 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2021-11-25 18:03:47,613 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 18:03:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2021-11-25 18:03:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-25 18:03:47,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:47,617 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1] [2021-11-25 18:03:47,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:47,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:47,824 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 18:03:47,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:47,824 INFO L85 PathProgramCache]: Analyzing trace with hash -967270336, now seen corresponding path program 5 times [2021-11-25 18:03:47,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:47,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591931094] [2021-11-25 18:03:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:47,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:48,999 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 18:03:49,000 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:49,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591931094] [2021-11-25 18:03:49,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591931094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:49,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160540397] [2021-11-25 18:03:49,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:03:49,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:49,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:49,002 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:49,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 18:03:49,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 18:03:49,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:03:49,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:03:49,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:49,888 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 18:03:49,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:52,808 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 18:03:52,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160540397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:52,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436324425] [2021-11-25 18:03:52,810 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:52,810 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:52,810 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:52,810 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:52,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:52,890 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:53,174 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8592#(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 18:03:53,174 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:53,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:53,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-25 18:03:53,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324922831] [2021-11-25 18:03:53,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:53,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-25 18:03:53,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-25 18:03:53,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4582, Invalid=5720, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:03:53,182 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 18:03:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:53,652 INFO L93 Difference]: Finished difference Result 711 states and 758 transitions. [2021-11-25 18:03:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-25 18:03:53,653 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 18:03:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:53,657 INFO L225 Difference]: With dead ends: 711 [2021-11-25 18:03:53,657 INFO L226 Difference]: Without dead ends: 710 [2021-11-25 18:03:53,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 920 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4582, Invalid=5720, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:03:53,662 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 498 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 18:03:53,663 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 18:03:53,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-25 18:03:53,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 663. [2021-11-25 18:03:53,682 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 18:03:53,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 710 transitions. [2021-11-25 18:03:53,686 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 710 transitions. Word has length 325 [2021-11-25 18:03:53,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:53,686 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 710 transitions. [2021-11-25 18:03:53,687 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 18:03:53,687 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 710 transitions. [2021-11-25 18:03:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-25 18:03:53,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:53,693 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 1, 1] [2021-11-25 18:03:53,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-25 18:03:53,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:53,918 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 18:03:53,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:53,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1014946161, now seen corresponding path program 5 times [2021-11-25 18:03:53,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:53,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400813238] [2021-11-25 18:03:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:53,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:03:55,043 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 18:03:55,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:03:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400813238] [2021-11-25 18:03:55,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400813238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:03:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195853118] [2021-11-25 18:03:55,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:03:55,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:03:55,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:03:55,044 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:03:55,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 18:03:55,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-25 18:03:55,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:03:55,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-25 18:03:55,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:03:55,817 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 18:03:55,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:03:58,569 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 18:03:58,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195853118] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:03:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1628147491] [2021-11-25 18:03:58,571 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:03:58,572 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:03:58,572 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:03:58,572 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:03:58,572 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:03:58,664 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:03:58,902 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 18:03:58,902 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:03:58,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:03:58,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2021-11-25 18:03:58,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575058116] [2021-11-25 18:03:58,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:03:58,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-25 18:03:58,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:03:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-25 18:03:58,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:03:58,909 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 18:03:59,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:03:59,317 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-25 18:03:59,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-25 18:03:59,318 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 18:03:59,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:03:59,321 INFO L225 Difference]: With dead ends: 667 [2021-11-25 18:03:59,322 INFO L226 Difference]: Without dead ends: 666 [2021-11-25 18:03:59,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1029 GetRequests, 929 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4579, Invalid=5723, Unknown=0, NotChecked=0, Total=10302 [2021-11-25 18:03:59,326 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 18:03:59,327 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 18:03:59,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-25 18:03:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 666. [2021-11-25 18:03:59,343 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 18:03:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 666 transitions. [2021-11-25 18:03:59,346 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 666 transitions. Word has length 328 [2021-11-25 18:03:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:03:59,347 INFO L470 AbstractCegarLoop]: Abstraction has 666 states and 666 transitions. [2021-11-25 18:03:59,347 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 18:03:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 666 transitions. [2021-11-25 18:03:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2021-11-25 18:03:59,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:03:59,366 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 1, 1] [2021-11-25 18:03:59,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:03:59,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-25 18:03:59,592 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 18:03:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:03:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1019121856, now seen corresponding path program 6 times [2021-11-25 18:03:59,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:03:59,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634396002] [2021-11-25 18:03:59,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:03:59,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:03:59,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:03,065 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 18:04:03,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634396002] [2021-11-25 18:04:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634396002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:03,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329761658] [2021-11-25 18:04:03,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:04:03,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:03,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:03,067 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:03,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 18:04:03,228 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:04:03,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 18:04:03,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:04,397 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 18:04:04,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:13,640 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 18:04:13,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329761658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:13,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939012899] [2021-11-25 18:04:13,643 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:04:13,643 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:13,644 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:13,644 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:13,644 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:13,717 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:14,087 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 18:04:14,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:14,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:14,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-25 18:04:14,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600842805] [2021-11-25 18:04:14,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:14,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-25 18:04:14,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-25 18:04:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18358, Invalid=20648, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:04:14,103 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 18:04:16,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:16,140 INFO L93 Difference]: Finished difference Result 1431 states and 1526 transitions. [2021-11-25 18:04:16,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-25 18:04:16,141 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 18:04:16,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:16,149 INFO L225 Difference]: With dead ends: 1431 [2021-11-25 18:04:16,150 INFO L226 Difference]: Without dead ends: 1430 [2021-11-25 18:04:16,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2076 GetRequests, 1880 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18358, Invalid=20648, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:04:16,155 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, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:04:16,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1005 Valid, 1055 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 18:04:16,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2021-11-25 18:04:16,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1335. [2021-11-25 18:04:16,187 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 18:04:16,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1430 transitions. [2021-11-25 18:04:16,192 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1430 transitions. Word has length 661 [2021-11-25 18:04:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:16,193 INFO L470 AbstractCegarLoop]: Abstraction has 1335 states and 1430 transitions. [2021-11-25 18:04:16,194 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 18:04:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1430 transitions. [2021-11-25 18:04:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 665 [2021-11-25 18:04:16,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:16,210 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 94, 1, 1] [2021-11-25 18:04:16,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:16,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-25 18:04:16,424 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 18:04:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash 464648079, now seen corresponding path program 6 times [2021-11-25 18:04:16,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:16,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296664837] [2021-11-25 18:04:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:16,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:20,022 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 18:04:20,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:20,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296664837] [2021-11-25 18:04:20,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296664837] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:20,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79508855] [2021-11-25 18:04:20,024 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:04:20,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:20,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:20,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:20,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-25 18:04:20,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:04:20,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:04:20,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 18:04:20,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:21,351 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 18:04:21,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:04:31,173 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 18:04:31,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79508855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:04:31,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [237309812] [2021-11-25 18:04:31,176 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:04:31,176 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:04:31,176 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:04:31,177 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:04:31,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:04:31,235 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:04:31,589 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 18:04:31,589 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:04:31,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:04:31,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2021-11-25 18:04:31,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225055550] [2021-11-25 18:04:31,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:04:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-11-25 18:04:31,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:04:31,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-11-25 18:04:31,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18355, Invalid=20651, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:04:31,598 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 18:04:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:04:33,147 INFO L93 Difference]: Finished difference Result 1339 states and 1434 transitions. [2021-11-25 18:04:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-25 18:04:33,148 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 18:04:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:04:33,156 INFO L225 Difference]: With dead ends: 1339 [2021-11-25 18:04:33,156 INFO L226 Difference]: Without dead ends: 1338 [2021-11-25 18:04:33,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2085 GetRequests, 1889 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=18355, Invalid=20651, Unknown=0, NotChecked=0, Total=39006 [2021-11-25 18:04:33,160 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 18:04:33,161 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 18:04:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1338 states. [2021-11-25 18:04:33,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1338 to 1338. [2021-11-25 18:04:33,191 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 18:04:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1338 transitions. [2021-11-25 18:04:33,195 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1338 transitions. Word has length 664 [2021-11-25 18:04:33,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:04:33,196 INFO L470 AbstractCegarLoop]: Abstraction has 1338 states and 1338 transitions. [2021-11-25 18:04:33,197 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 18:04:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1338 transitions. [2021-11-25 18:04:33,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1334 [2021-11-25 18:04:33,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:04:33,214 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 1, 1] [2021-11-25 18:04:33,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:04:33,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-25 18:04:33,428 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 18:04:33,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:04:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1460735296, now seen corresponding path program 7 times [2021-11-25 18:04:33,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:04:33,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290498734] [2021-11-25 18:04:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:04:33,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:04:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:45,718 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 18:04:45,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:04:45,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290498734] [2021-11-25 18:04:45,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290498734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:04:45,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819682837] [2021-11-25 18:04:45,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:04:45,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:04:45,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:04:45,721 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:04:45,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-25 18:04:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:04:46,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2480 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-25 18:04:46,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:04:48,514 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 18:04:48,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:05:23,909 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 18:05:23,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819682837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:05:23,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1207772454] [2021-11-25 18:05:23,912 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:05:23,912 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:05:23,912 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:05:23,912 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:05:23,912 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:05:23,989 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:05:24,612 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 18:05:24,612 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:05:24,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:05:24,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-25 18:05:24,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146479336] [2021-11-25 18:05:24,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:05:24,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-25 18:05:24,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:05:24,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-25 18:05:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73558, Invalid=78152, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:05:24,643 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 18:05:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:05:38,597 INFO L93 Difference]: Finished difference Result 2871 states and 3062 transitions. [2021-11-25 18:05:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-25 18:05:38,598 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 18:05:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:05:38,615 INFO L225 Difference]: With dead ends: 2871 [2021-11-25 18:05:38,615 INFO L226 Difference]: Without dead ends: 2870 [2021-11-25 18:05:38,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4188 GetRequests, 3800 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3431 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=73558, Invalid=78152, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:05:38,628 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 2194 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:05:38,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 2114 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 18:05:38,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2021-11-25 18:05:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2679. [2021-11-25 18:05:38,717 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 18:05:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 2870 transitions. [2021-11-25 18:05:38,729 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 2870 transitions. Word has length 1333 [2021-11-25 18:05:38,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:05:38,731 INFO L470 AbstractCegarLoop]: Abstraction has 2679 states and 2870 transitions. [2021-11-25 18:05:38,733 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 18:05:38,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 2870 transitions. [2021-11-25 18:05:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1337 [2021-11-25 18:05:38,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:05:38,759 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 190, 1, 1] [2021-11-25 18:05:38,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:05:38,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:38,972 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 18:05:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:05:38,973 INFO L85 PathProgramCache]: Analyzing trace with hash 156604815, now seen corresponding path program 7 times [2021-11-25 18:05:38,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:05:38,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869083432] [2021-11-25 18:05:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:05:38,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:05:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:51,674 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 18:05:51,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:05:51,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869083432] [2021-11-25 18:05:51,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869083432] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:05:51,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545573196] [2021-11-25 18:05:51,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:05:51,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:05:51,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:05:51,676 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:05:51,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 18:05:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:05:51,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2485 conjuncts, 192 conjunts are in the unsatisfiable core [2021-11-25 18:05:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:05:54,206 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 18:05:54,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:06:30,441 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 18:06:30,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545573196] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:06:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1288499780] [2021-11-25 18:06:30,443 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:06:30,443 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:06:30,444 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:06:30,444 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:06:30,444 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:06:30,492 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:06:31,116 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 18:06:31,116 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:06:31,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:06:31,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2021-11-25 18:06:31,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899599346] [2021-11-25 18:06:31,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:06:31,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-11-25 18:06:31,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:06:31,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-11-25 18:06:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73555, Invalid=78155, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:06:31,136 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 18:06:38,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:06:38,919 INFO L93 Difference]: Finished difference Result 2683 states and 2874 transitions. [2021-11-25 18:06:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2021-11-25 18:06:38,920 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 18:06:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:06:38,934 INFO L225 Difference]: With dead ends: 2683 [2021-11-25 18:06:38,934 INFO L226 Difference]: Without dead ends: 2682 [2021-11-25 18:06:38,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4197 GetRequests, 3809 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 46.3s TimeCoverageRelationStatistics Valid=73555, Invalid=78155, Unknown=0, NotChecked=0, Total=151710 [2021-11-25 18:06:38,946 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 382 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:06:38,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 1926 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 18:06:38,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2021-11-25 18:06:38,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 2682. [2021-11-25 18:06:39,003 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 18:06:39,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 2682 transitions. [2021-11-25 18:06:39,009 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 2682 transitions. Word has length 1336 [2021-11-25 18:06:39,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:06:39,011 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 2682 transitions. [2021-11-25 18:06:39,013 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 18:06:39,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 2682 transitions. [2021-11-25 18:06:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2678 [2021-11-25 18:06:39,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:06:39,068 INFO L514 BasicCegarLoop]: trace histogram [383, 382, 382, 382, 382, 382, 382, 1, 1] [2021-11-25 18:06:39,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:06:39,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:06:39,284 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 18:06:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:06:39,285 INFO L85 PathProgramCache]: Analyzing trace with hash -156743360, now seen corresponding path program 8 times [2021-11-25 18:06:39,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:06:39,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505169212] [2021-11-25 18:06:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:06:39,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:06:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:07:26,981 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 18:07:26,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:07:26,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505169212] [2021-11-25 18:07:26,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505169212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:07:26,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615744465] [2021-11-25 18:07:26,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:07:26,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:07:26,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:07:26,982 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:07:27,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-25 18:07:31,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-25 18:07:31,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:07:31,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 4976 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-25 18:07:31,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:07:36,698 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 18:07:36,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:09:54,849 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 18:09:54,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615744465] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:09:54,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2050810345] [2021-11-25 18:09:54,852 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 18:09:54,852 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:09:54,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:09:54,853 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:09:54,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:09:54,920 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:09:56,147 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 18:09:56,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:09:56,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:09:56,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2021-11-25 18:09:56,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36358729] [2021-11-25 18:09:56,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:09:56,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2021-11-25 18:09:56,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:09:56,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2021-11-25 18:09:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294550, Invalid=303752, Unknown=0, NotChecked=0, Total=598302 [2021-11-25 18:09:56,217 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 18:11:59,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:11:59,384 INFO L93 Difference]: Finished difference Result 5751 states and 6134 transitions. [2021-11-25 18:11:59,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2021-11-25 18:11:59,387 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 18:11:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:11:59,412 INFO L225 Difference]: With dead ends: 5751 [2021-11-25 18:11:59,413 INFO L226 Difference]: Without dead ends: 5750 [2021-11-25 18:11:59,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8412 GetRequests, 7640 SyntacticMatches, 0 SemanticMatches, 772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6887 ImplicationChecksByTransitivity, 179.6s TimeCoverageRelationStatistics Valid=294550, Invalid=303752, Unknown=0, NotChecked=0, Total=598302 [2021-11-25 18:11:59,440 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4728 mSDsluCounter, 4219 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.5s IncrementalHoareTripleChecker+Time [2021-11-25 18:11:59,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4728 Valid, 4226 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-25 18:11:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5750 states. [2021-11-25 18:11:59,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5750 to 5367. [2021-11-25 18:11:59,548 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 18:11:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5367 states to 5367 states and 5750 transitions. [2021-11-25 18:11:59,561 INFO L78 Accepts]: Start accepts. Automaton has 5367 states and 5750 transitions. Word has length 2677 [2021-11-25 18:11:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:11:59,563 INFO L470 AbstractCegarLoop]: Abstraction has 5367 states and 5750 transitions. [2021-11-25 18:11:59,565 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 18:11:59,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5367 states and 5750 transitions. [2021-11-25 18:11:59,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2681 [2021-11-25 18:11:59,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:11:59,621 INFO L514 BasicCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 382, 1, 1] [2021-11-25 18:11:59,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:11:59,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:11:59,833 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 18:11:59,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:11:59,834 INFO L85 PathProgramCache]: Analyzing trace with hash -911942257, now seen corresponding path program 8 times [2021-11-25 18:11:59,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:11:59,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577261981] [2021-11-25 18:11:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:11:59,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:12:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:12:48,866 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 18:12:48,866 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:12:48,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577261981] [2021-11-25 18:12:48,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577261981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:12:48,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874625423] [2021-11-25 18:12:48,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:12:48,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:12:48,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:12:48,867 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:12:48,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f0ec909-d822-48f1-9dc2-f47205f9a721/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-25 18:12:53,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2021-11-25 18:12:53,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:12:53,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 4981 conjuncts, 384 conjunts are in the unsatisfiable core [2021-11-25 18:12:53,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:12:57,888 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 18:12:57,888 INFO L328 TraceCheckSpWp]: Computing backward predicates...