./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/aviad.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_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/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_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/aviad.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/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_76bb9f88-6eec-4730-8dfa-c8210015829d/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 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:53:26,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:53:26,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:53:27,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:53:27,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:53:27,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:53:27,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:53:27,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:53:27,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:53:27,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:53:27,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:53:27,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:53:27,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:53:27,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:53:27,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:53:27,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:53:27,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:53:27,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:53:27,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:53:27,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:53:27,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:53:27,049 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:53:27,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:53:27,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:53:27,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:53:27,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:53:27,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:53:27,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:53:27,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:53:27,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:53:27,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:53:27,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:53:27,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:53:27,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:53:27,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:53:27,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:53:27,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:53:27,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:53:27,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:53:27,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:53:27,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:53:27,076 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-25 17:53:27,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:53:27,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:53:27,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:53:27,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:53:27,120 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:53:27,129 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:53:27,129 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:53:27,130 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:53:27,130 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:53:27,130 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:53:27,131 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:53:27,131 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:53:27,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:53:27,132 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:53:27,132 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:53:27,132 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:53:27,133 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:53:27,133 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:53:27,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:53:27,134 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-25 17:53:27,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:53:27,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:53:27,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:53:27,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:53:27,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:53:27,135 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-25 17:53:27,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:53:27,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:53:27,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:53:27,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:53:27,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:53:27,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:53:27,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:53:27,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:53:27,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:53:27,139 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:53:27,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:53:27,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:53:27,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:53:27,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:53:27,140 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_76bb9f88-6eec-4730-8dfa-c8210015829d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 212c9b1b6a93f8f17548e7937584929a6b6ed1677eb6287f5deae898fbaeb3a4 [2021-11-25 17:53:27,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:53:27,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:53:27,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:53:27,426 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:53:27,427 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:53:27,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-11-25 17:53:27,489 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/data/d89e70ebd/29ea4e82043545c292c5b2386c5485b9/FLAG5fa5e4289 [2021-11-25 17:53:27,989 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:53:27,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/sv-benchmarks/c/termination-crafted-lit/aviad.c [2021-11-25 17:53:28,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/data/d89e70ebd/29ea4e82043545c292c5b2386c5485b9/FLAG5fa5e4289 [2021-11-25 17:53:28,363 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/data/d89e70ebd/29ea4e82043545c292c5b2386c5485b9 [2021-11-25 17:53:28,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:53:28,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:53:28,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:53:28,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:53:28,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:53:28,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5993c090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28, skipping insertion in model container [2021-11-25 17:53:28,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:53:28,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:53:28,569 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:53:28,572 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:53:28,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:53:28,628 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:53:28,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28 WrapperNode [2021-11-25 17:53:28,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:53:28,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:53:28,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:53:28,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:53:28,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,661 INFO L137 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2021-11-25 17:53:28,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:53:28,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:53:28,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:53:28,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:53:28,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,688 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:53:28,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:53:28,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:53:28,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:53:28,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (1/1) ... [2021-11-25 17:53:28,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:53:28,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:53:28,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:53:28,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:53:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:53:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:53:28,830 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:53:28,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:53:28,985 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:53:29,004 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:53:29,005 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 17:53:29,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:29 BoogieIcfgContainer [2021-11-25 17:53:29,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:53:29,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:53:29,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:53:29,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:53:29,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:53:28" (1/3) ... [2021-11-25 17:53:29,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b09df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:53:29, skipping insertion in model container [2021-11-25 17:53:29,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:53:28" (2/3) ... [2021-11-25 17:53:29,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b09df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:53:29, skipping insertion in model container [2021-11-25 17:53:29,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:53:29" (3/3) ... [2021-11-25 17:53:29,016 INFO L111 eAbstractionObserver]: Analyzing ICFG aviad.c [2021-11-25 17:53:29,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:53:29,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-25 17:53:29,077 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:53:29,101 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 17:53:29,101 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-25 17:53:29,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-25 17:53:29,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:29,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-25 17:53:29,146 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:53:29,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:29,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2185955, now seen corresponding path program 1 times [2021-11-25 17:53:29,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:29,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806494735] [2021-11-25 17:53:29,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:29,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:29,352 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 17:53:29,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:29,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806494735] [2021-11-25 17:53:29,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806494735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:29,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:29,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-25 17:53:29,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960218509] [2021-11-25 17:53:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:29,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:53:29,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:29,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:53:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:53:29,396 INFO L87 Difference]: Start difference. First operand has 17 states, 10 states have (on average 1.8) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 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 17:53:29,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:29,452 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-25 17:53:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:53:29,456 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 17:53:29,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:29,463 INFO L225 Difference]: With dead ends: 17 [2021-11-25 17:53:29,464 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 17:53:29,467 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 17:53:29,472 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:29,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:53:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 17:53:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 17:53:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 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 17:53:29,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-25 17:53:29,508 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2021-11-25 17:53:29,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:29,508 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-25 17:53:29,508 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 17:53:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-25 17:53:29,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-25 17:53:29,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:29,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-25 17:53:29,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:53:29,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:53:29,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash 67764659, now seen corresponding path program 1 times [2021-11-25 17:53:29,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:29,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230472930] [2021-11-25 17:53:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:29,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:29,565 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 17:53:29,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:29,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230472930] [2021-11-25 17:53:29,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230472930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:29,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:29,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:53:29,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753484260] [2021-11-25 17:53:29,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:29,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:53:29,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:53:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:53:29,576 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:29,597 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-25 17:53:29,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:53:29,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-25 17:53:29,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:29,598 INFO L225 Difference]: With dead ends: 14 [2021-11-25 17:53:29,598 INFO L226 Difference]: Without dead ends: 12 [2021-11-25 17:53:29,599 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 17:53:29,601 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:29,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:53:29,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-25 17:53:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-25 17:53:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-25 17:53:29,605 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-11-25 17:53:29,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:29,605 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-25 17:53:29,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-25 17:53:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 17:53:29,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:29,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:53:29,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:53:29,607 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:53:29,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:29,624 INFO L85 PathProgramCache]: Analyzing trace with hash 697329653, now seen corresponding path program 1 times [2021-11-25 17:53:29,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:29,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54245053] [2021-11-25 17:53:29,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:29,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:29,659 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 17:53:29,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:29,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54245053] [2021-11-25 17:53:29,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54245053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:29,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:29,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:53:29,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391899002] [2021-11-25 17:53:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:29,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:53:29,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:53:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:53:29,663 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:29,696 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-11-25 17:53:29,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:53:29,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 17:53:29,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:29,697 INFO L225 Difference]: With dead ends: 23 [2021-11-25 17:53:29,697 INFO L226 Difference]: Without dead ends: 22 [2021-11-25 17:53:29,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:29,699 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:29,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:53:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-25 17:53:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-11-25 17:53:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-25 17:53:29,705 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 7 [2021-11-25 17:53:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:29,706 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-25 17:53:29,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-25 17:53:29,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 17:53:29,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:29,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:53:29,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:53:29,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:53:29,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 142382823, now seen corresponding path program 1 times [2021-11-25 17:53:29,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607741506] [2021-11-25 17:53:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:29,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:29,747 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 17:53:29,748 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:29,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607741506] [2021-11-25 17:53:29,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607741506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:29,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:53:29,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 17:53:29,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494296143] [2021-11-25 17:53:29,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:29,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:53:29,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:29,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:53:29,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:53:29,751 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:29,769 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-11-25 17:53:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:53:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 17:53:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:29,770 INFO L225 Difference]: With dead ends: 20 [2021-11-25 17:53:29,770 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 17:53:29,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:53:29,773 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:29,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:53:29,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 17:53:29,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 17:53:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-25 17:53:29,778 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 8 [2021-11-25 17:53:29,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:29,779 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-25 17:53:29,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:29,779 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-25 17:53:29,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 17:53:29,780 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:29,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-25 17:53:29,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:53:29,780 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 17:53:29,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:29,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1497150636, now seen corresponding path program 1 times [2021-11-25 17:53:29,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:29,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387431347] [2021-11-25 17:53:29,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:29,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:29,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:29,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:29,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387431347] [2021-11-25 17:53:29,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387431347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:53:29,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223301456] [2021-11-25 17:53:29,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:29,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:29,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:53:29,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:53:29,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:53:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:29,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 17:53:29,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:53:30,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:30,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:53:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:30,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223301456] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:53:30,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [5713736] [2021-11-25 17:53:30,120 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-25 17:53:30,121 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:53:30,125 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:53:30,130 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:53:30,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:53:30,385 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:53:30,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [5713736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:53:30,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:53:30,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 4, 4] total 14 [2021-11-25 17:53:30,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968080121] [2021-11-25 17:53:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:53:30,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:53:30,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:53:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:53:30,821 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:31,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:31,003 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-11-25 17:53:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:53:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 17:53:31,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:31,005 INFO L225 Difference]: With dead ends: 35 [2021-11-25 17:53:31,006 INFO L226 Difference]: Without dead ends: 34 [2021-11-25 17:53:31,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:53:31,008 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 10 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:31,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:53:31,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-25 17:53:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 24. [2021-11-25 17:53:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-25 17:53:31,023 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2021-11-25 17:53:31,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:31,024 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-25 17:53:31,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-25 17:53:31,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 17:53:31,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:31,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:53:31,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 17:53:31,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:31,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:53:31,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:31,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1502876274, now seen corresponding path program 1 times [2021-11-25 17:53:31,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:31,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922740235] [2021-11-25 17:53:31,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:31,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:31,348 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:31,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922740235] [2021-11-25 17:53:31,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922740235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:53:31,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935225223] [2021-11-25 17:53:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:31,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:31,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:53:31,350 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:53:31,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 17:53:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:31,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 17:53:31,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:53:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:31,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:53:31,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:31,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935225223] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:53:31,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1778114624] [2021-11-25 17:53:31,536 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:53:31,536 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:53:31,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:53:31,537 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:53:31,537 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:53:32,731 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:53:38,086 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 64 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 17:53:50,242 WARN L227 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 17:53:50,879 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '438#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0) (exists ((|v_ULTIMATE.start_f_~a#1_34| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_34|) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) 2147483648)) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_34| 2)) (mod |v_ULTIMATE.start_f_~a#1_34| 2))) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) |ULTIMATE.start_f_~a#1|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_34| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_34| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_34| 2) 1) (div |v_ULTIMATE.start_f_~a#1_34| 2)) 2147483647))))) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:53:50,879 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:53:50,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:53:50,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-25 17:53:50,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240741030] [2021-11-25 17:53:50,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:53:50,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:53:50,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:53:50,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:53:50,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=308, Unknown=1, NotChecked=0, Total=380 [2021-11-25 17:53:50,881 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:53:50,955 INFO L93 Difference]: Finished difference Result 79 states and 90 transitions. [2021-11-25 17:53:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:53:50,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 17:53:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:53:50,957 INFO L225 Difference]: With dead ends: 79 [2021-11-25 17:53:50,957 INFO L226 Difference]: Without dead ends: 78 [2021-11-25 17:53:50,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=106, Invalid=445, Unknown=1, NotChecked=0, Total=552 [2021-11-25 17:53:50,959 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:53:50,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 60 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:53:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-25 17:53:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2021-11-25 17:53:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 71 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:50,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2021-11-25 17:53:50,970 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 14 [2021-11-25 17:53:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:53:50,971 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2021-11-25 17:53:50,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:53:50,971 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2021-11-25 17:53:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 17:53:50,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:53:50,973 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2021-11-25 17:53:51,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 17:53:51,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:51,199 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:53:51,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:53:51,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2144510063, now seen corresponding path program 2 times [2021-11-25 17:53:51,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:53:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976881468] [2021-11-25 17:53:51,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:53:51,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:53:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:53:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:53:51,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:53:51,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976881468] [2021-11-25 17:53:51,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976881468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:53:51,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863810164] [2021-11-25 17:53:51,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:53:51,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:53:51,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:53:51,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:53:51,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 17:53:51,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-25 17:53:51,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:53:51,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 17:53:51,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:53:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 17:53:51,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:53:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 17:53:51,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863810164] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:53:51,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [56117117] [2021-11-25 17:53:51,929 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:53:51,930 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:53:51,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:53:51,930 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:53:51,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:53:52,740 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:54:00,128 WARN L227 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 17:54:06,538 WARN L227 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 60 DAG size of output: 55 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 17:54:13,968 WARN L227 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 62 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 17:54:16,977 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '850#(and (<= |ULTIMATE.start_f_~a#1| 2147483647) (or (and (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (< 0 |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_49| Int)) (and (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2)) 2147483648)) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2)) 2147483647) (< 1 |v_ULTIMATE.start_f_~a#1_49|) (= |ULTIMATE.start_f_~a#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_49| 2) 1) (div |v_ULTIMATE.start_f_~a#1_49| 2))) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_49| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_49| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_49| 2)) (mod |v_ULTIMATE.start_f_~a#1_49| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:54:16,978 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:54:16,978 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:54:16,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 21 [2021-11-25 17:54:16,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349032192] [2021-11-25 17:54:16,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:54:16,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 17:54:16,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 17:54:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=795, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:54:16,980 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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 17:54:18,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:18,234 INFO L93 Difference]: Finished difference Result 131 states and 149 transitions. [2021-11-25 17:54:18,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-25 17:54:18,235 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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) Word has length 35 [2021-11-25 17:54:18,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:18,236 INFO L225 Difference]: With dead ends: 131 [2021-11-25 17:54:18,236 INFO L226 Difference]: Without dead ends: 85 [2021-11-25 17:54:18,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=664, Invalid=4028, Unknown=0, NotChecked=0, Total=4692 [2021-11-25 17:54:18,240 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 165 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:18,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 22 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:54:18,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-25 17:54:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-11-25 17:54:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 81 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-11-25 17:54:18,251 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 35 [2021-11-25 17:54:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:18,251 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-11-25 17:54:18,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 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 17:54:18,252 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-11-25 17:54:18,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 17:54:18,253 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:18,253 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 1, 1] [2021-11-25 17:54:18,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:18,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:18,476 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:54:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:18,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1463774018, now seen corresponding path program 3 times [2021-11-25 17:54:18,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:18,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171382166] [2021-11-25 17:54:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:18,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:18,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:18,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171382166] [2021-11-25 17:54:18,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171382166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:18,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841245758] [2021-11-25 17:54:18,714 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 17:54:18,714 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:18,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:18,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:18,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 17:54:18,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 17:54:18,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:54:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-25 17:54:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:54:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:18,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:54:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:19,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841245758] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:54:19,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1552047997] [2021-11-25 17:54:19,139 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:54:19,139 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:54:19,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:54:19,139 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:54:19,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:54:19,921 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:54:26,051 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1458#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (exists ((|v_ULTIMATE.start_f_~a#1_65| Int)) (and (<= 0 (+ (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) 2147483648)) (<= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) 2147483647) (= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (div |v_ULTIMATE.start_f_~a#1_65| 2) 1) (div |v_ULTIMATE.start_f_~a#1_65| 2)) |ULTIMATE.start_f_~a#1|) (< 1 |v_ULTIMATE.start_f_~a#1_65|) (= (ite (and (< |v_ULTIMATE.start_f_~a#1_65| 0) (not (= 0 (mod |v_ULTIMATE.start_f_~a#1_65| 2)))) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_65| 2)) (mod |v_ULTIMATE.start_f_~a#1_65| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:54:26,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:54:26,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:54:26,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2021-11-25 17:54:26,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048837707] [2021-11-25 17:54:26,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:54:26,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-25 17:54:26,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-25 17:54:26,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1036, Unknown=1, NotChecked=0, Total=1260 [2021-11-25 17:54:26,056 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:26,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:26,299 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2021-11-25 17:54:26,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 17:54:26,300 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 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 42 [2021-11-25 17:54:26,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:26,302 INFO L225 Difference]: With dead ends: 183 [2021-11-25 17:54:26,302 INFO L226 Difference]: Without dead ends: 182 [2021-11-25 17:54:26,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=470, Invalid=1785, Unknown=1, NotChecked=0, Total=2256 [2021-11-25 17:54:26,304 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 258 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:26,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 122 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:54:26,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-25 17:54:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2021-11-25 17:54:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.0837988826815643) internal successors, (194), 179 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 194 transitions. [2021-11-25 17:54:26,320 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 194 transitions. Word has length 42 [2021-11-25 17:54:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:26,321 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 194 transitions. [2021-11-25 17:54:26,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.36) internal successors, (84), 25 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 194 transitions. [2021-11-25 17:54:26,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 17:54:26,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:26,325 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 7, 7, 7, 6, 6, 6, 1, 1] [2021-11-25 17:54:26,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:26,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:26,530 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:54:26,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash 248445017, now seen corresponding path program 4 times [2021-11-25 17:54:26,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:26,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551854959] [2021-11-25 17:54:26,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:26,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:26,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:26,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551854959] [2021-11-25 17:54:26,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551854959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:26,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168430980] [2021-11-25 17:54:26,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 17:54:26,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:26,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:26,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:26,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 17:54:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:27,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 17:54:27,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:54:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:27,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:54:28,005 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:28,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168430980] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:54:28,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [38620105] [2021-11-25 17:54:28,008 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:54:28,008 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:54:28,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:54:28,008 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:54:28,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:54:28,753 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:54:34,918 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2499#(and (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_88| Int)) (and (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_88| 2)) (mod |v_ULTIMATE.start_f_~a#1_88| 2)) |ULTIMATE.start_f_~tmp~0#1|) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) |ULTIMATE.start_f_~a#1|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_88| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_88| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_88| 2) 1) (div |v_ULTIMATE.start_f_~a#1_88| 2)) 2147483648)) (< 1 |v_ULTIMATE.start_f_~a#1_88|))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:54:34,918 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:54:34,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:54:34,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2021-11-25 17:54:34,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069004876] [2021-11-25 17:54:34,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:54:34,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-25 17:54:34,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-25 17:54:34,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=3234, Unknown=1, NotChecked=0, Total=4032 [2021-11-25 17:54:34,923 INFO L87 Difference]: Start difference. First operand 180 states and 194 transitions. Second operand has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:35,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:35,623 INFO L93 Difference]: Finished difference Result 379 states and 434 transitions. [2021-11-25 17:54:35,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-25 17:54:35,623 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 0 states have call successors, (0), 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 91 [2021-11-25 17:54:35,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:35,626 INFO L225 Difference]: With dead ends: 379 [2021-11-25 17:54:35,626 INFO L226 Difference]: Without dead ends: 378 [2021-11-25 17:54:35,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2195 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1877, Invalid=6132, Unknown=1, NotChecked=0, Total=8010 [2021-11-25 17:54:35,631 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 595 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:35,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 223 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:54:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-25 17:54:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 376. [2021-11-25 17:54:35,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 1.0773333333333333) internal successors, (404), 375 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:35,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 404 transitions. [2021-11-25 17:54:35,673 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 404 transitions. Word has length 91 [2021-11-25 17:54:35,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:35,673 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 404 transitions. [2021-11-25 17:54:35,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 3.4339622641509435) internal successors, (182), 53 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 404 transitions. [2021-11-25 17:54:35,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-25 17:54:35,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:35,678 INFO L514 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 14, 14, 14, 13, 13, 13, 1, 1] [2021-11-25 17:54:35,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 17:54:35,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:35,902 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:54:35,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:35,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1803313251, now seen corresponding path program 5 times [2021-11-25 17:54:35,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:35,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140094036] [2021-11-25 17:54:35,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:35,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:37,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:37,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140094036] [2021-11-25 17:54:37,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140094036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:37,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786066785] [2021-11-25 17:54:37,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 17:54:37,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:37,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:37,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:37,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 17:54:37,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2021-11-25 17:54:37,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:54:37,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-25 17:54:37,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:54:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:37,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:54:40,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2067 backedges. 0 proven. 2067 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:40,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786066785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:54:40,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1035824692] [2021-11-25 17:54:40,530 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:54:40,531 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:54:40,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:54:40,531 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:54:40,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:54:41,266 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:54:48,229 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4660#(and (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_125| Int)) (and (= |ULTIMATE.start_f_~a#1| (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2))) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_125| 2)) (mod |v_ULTIMATE.start_f_~a#1_125| 2))) (<= (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2)) 2147483647) (< 1 |v_ULTIMATE.start_f_~a#1_125|) (<= 0 (+ (ite (and (< |v_ULTIMATE.start_f_~a#1_125| 0) (not (= (mod |v_ULTIMATE.start_f_~a#1_125| 2) 0))) (+ (div |v_ULTIMATE.start_f_~a#1_125| 2) 1) (div |v_ULTIMATE.start_f_~a#1_125| 2)) 2147483648)))) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:54:48,230 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:54:48,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:54:48,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 108 [2021-11-25 17:54:48,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370644307] [2021-11-25 17:54:48,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:54:48,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-11-25 17:54:48,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:54:48,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-11-25 17:54:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3121, Invalid=11157, Unknown=2, NotChecked=0, Total=14280 [2021-11-25 17:54:48,238 INFO L87 Difference]: Start difference. First operand 376 states and 404 transitions. Second operand has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:50,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:54:50,517 INFO L93 Difference]: Finished difference Result 771 states and 882 transitions. [2021-11-25 17:54:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-11-25 17:54:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 0 states have call successors, (0), 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 189 [2021-11-25 17:54:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:54:50,532 INFO L225 Difference]: With dead ends: 771 [2021-11-25 17:54:50,532 INFO L226 Difference]: Without dead ends: 770 [2021-11-25 17:54:50,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7598 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=7631, Invalid=22469, Unknown=2, NotChecked=0, Total=30102 [2021-11-25 17:54:50,541 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1530 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:54:50,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1530 Valid, 418 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:54:50,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-11-25 17:54:50,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 768. [2021-11-25 17:54:50,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.074315514993481) internal successors, (824), 767 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 824 transitions. [2021-11-25 17:54:50,573 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 824 transitions. Word has length 189 [2021-11-25 17:54:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:54:50,574 INFO L470 AbstractCegarLoop]: Abstraction has 768 states and 824 transitions. [2021-11-25 17:54:50,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 3.467889908256881) internal successors, (378), 109 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:54:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 824 transitions. [2021-11-25 17:54:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-11-25 17:54:50,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:54:50,585 INFO L514 BasicCegarLoop]: trace histogram [55, 55, 54, 54, 28, 28, 28, 27, 27, 27, 1, 1] [2021-11-25 17:54:50,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 17:54:50,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 17:54:50,799 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:54:50,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:54:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash -960210697, now seen corresponding path program 6 times [2021-11-25 17:54:50,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:54:50,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661937774] [2021-11-25 17:54:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:54:50,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:54:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:54:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:54,950 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:54:54,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661937774] [2021-11-25 17:54:54,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661937774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:54:54,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971587468] [2021-11-25 17:54:54,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 17:54:54,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:54:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:54:54,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:54:54,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 17:54:55,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 17:54:55,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 17:54:55,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-25 17:54:55,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:54:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:54:55,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:55:05,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8829 backedges. 0 proven. 8829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:55:05,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971587468] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:55:05,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [631128265] [2021-11-25 17:55:05,269 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:55:05,270 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:55:05,270 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:55:05,270 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:55:05,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:55:05,958 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:55:12,857 WARN L227 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 64 DAG size of output: 58 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 17:55:20,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9061#(and (or (and (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (< 0 |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (exists ((|v_ULTIMATE.start_f_~a#1_190| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_190|) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) 2147483648)) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_190| 2) 1) (div |v_ULTIMATE.start_f_~a#1_190| 2)) |ULTIMATE.start_f_~a#1|) (= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_190| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_190| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_190| 2)) (mod |v_ULTIMATE.start_f_~a#1_190| 2)) |ULTIMATE.start_f_~tmp~0#1|))) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (<= |ULTIMATE.start_f_~a#1| 2147483647) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:55:20,796 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:55:20,796 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:55:20,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 110, 110] total 220 [2021-11-25 17:55:20,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395108299] [2021-11-25 17:55:20,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:55:20,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 222 states [2021-11-25 17:55:20,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:55:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 222 interpolants. [2021-11-25 17:55:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12473, Invalid=41119, Unknown=0, NotChecked=0, Total=53592 [2021-11-25 17:55:20,806 INFO L87 Difference]: Start difference. First operand 768 states and 824 transitions. Second operand has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:55:30,377 INFO L93 Difference]: Finished difference Result 1555 states and 1778 transitions. [2021-11-25 17:55:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2021-11-25 17:55:30,378 INFO L78 Accepts]: Start accepts. Automaton has has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 0 states have call successors, (0), 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 385 [2021-11-25 17:55:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:55:30,386 INFO L225 Difference]: With dead ends: 1555 [2021-11-25 17:55:30,387 INFO L226 Difference]: Without dead ends: 1554 [2021-11-25 17:55:30,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 340 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27816 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=30899, Invalid=85723, Unknown=0, NotChecked=0, Total=116622 [2021-11-25 17:55:30,397 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3436 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3436 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:55:30,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3436 Valid, 813 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:55:30,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-25 17:55:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1552. [2021-11-25 17:55:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1552 states, 1551 states have (on average 1.072856221792392) internal successors, (1664), 1551 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:30,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 1664 transitions. [2021-11-25 17:55:30,447 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 1664 transitions. Word has length 385 [2021-11-25 17:55:30,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:55:30,448 INFO L470 AbstractCegarLoop]: Abstraction has 1552 states and 1664 transitions. [2021-11-25 17:55:30,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 222 states, 221 states have (on average 3.484162895927602) internal successors, (770), 221 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:55:30,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 1664 transitions. [2021-11-25 17:55:30,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2021-11-25 17:55:30,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:55:30,473 INFO L514 BasicCegarLoop]: trace histogram [111, 111, 110, 110, 56, 56, 56, 55, 55, 55, 1, 1] [2021-11-25 17:55:30,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 17:55:30,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-25 17:55:30,698 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-25 17:55:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:55:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash -234722273, now seen corresponding path program 7 times [2021-11-25 17:55:30,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:55:30,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377701951] [2021-11-25 17:55:30,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:55:30,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:55:31,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 28416 proven. 524 refuted. 0 times theorem prover too weak. 7525 trivial. 0 not checked. [2021-11-25 17:55:36,226 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:55:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377701951] [2021-11-25 17:55:36,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377701951] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:55:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617531870] [2021-11-25 17:55:36,228 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 17:55:36,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:55:36,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:55:36,236 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:55:36,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76bb9f88-6eec-4730-8dfa-c8210015829d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 17:55:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:55:36,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 223 conjunts are in the unsatisfiable core [2021-11-25 17:55:36,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 17:55:58,974 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 0 proven. 36465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:55:58,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 17:56:41,816 INFO L134 CoverageAnalysis]: Checked inductivity of 36465 backedges. 0 proven. 36465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:56:41,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617531870] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 17:56:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [398556651] [2021-11-25 17:56:41,819 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-25 17:56:41,819 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 17:56:41,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 17:56:41,820 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 17:56:41,820 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 17:56:42,530 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 17:56:50,816 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18034#(and (or (and (<= |ULTIMATE.start_f_~a#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (= |ULTIMATE.start_f_~tmp~0#1| 0)) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (< 0 |ULTIMATE.start_f_~a#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= (ite (and (not (= (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) 0)) (< (+ |ULTIMATE.start_f_~a#1| 1) 0)) (+ (mod (+ |ULTIMATE.start_f_~a#1| 1) 2) (- 2)) (mod (+ |ULTIMATE.start_f_~a#1| 1) 2)) |ULTIMATE.start_f_~tmp~0#1|)) (and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_#in~a#1| 2147483648)) (exists ((|v_ULTIMATE.start_f_~a#1_311| Int)) (and (< 1 |v_ULTIMATE.start_f_~a#1_311|) (= |ULTIMATE.start_f_~a#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2))) (<= (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2)) 2147483647) (<= 0 (+ (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (div |v_ULTIMATE.start_f_~a#1_311| 2) 1) (div |v_ULTIMATE.start_f_~a#1_311| 2)) 2147483648)) (= |ULTIMATE.start_f_~tmp~0#1| (ite (and (not (= (mod |v_ULTIMATE.start_f_~a#1_311| 2) 0)) (< |v_ULTIMATE.start_f_~a#1_311| 0)) (+ (- 2) (mod |v_ULTIMATE.start_f_~a#1_311| 2)) (mod |v_ULTIMATE.start_f_~a#1_311| 2))))) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (<= |ULTIMATE.start_f_#in~a#1| 2147483647) (= |ULTIMATE.start_f_~tmp~0#1| 0))) (= |ULTIMATE.start_f_~count~0#1| |ULTIMATE.start_f_#t~post0#1|) (< 2147483646 |ULTIMATE.start_f_#t~post0#1|))' at error location [2021-11-25 17:56:50,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 17:56:50,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 17:56:50,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 222, 222] total 537 [2021-11-25 17:56:50,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856256801] [2021-11-25 17:56:50,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 17:56:50,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 538 states [2021-11-25 17:56:50,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:56:50,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 538 interpolants. [2021-11-25 17:56:50,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53329, Invalid=246427, Unknown=0, NotChecked=0, Total=299756 [2021-11-25 17:56:50,850 INFO L87 Difference]: Start difference. First operand 1552 states and 1664 transitions. Second operand has 538 states, 538 states have (on average 3.693308550185874) internal successors, (1987), 537 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)