./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh --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 faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 12:11:43,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:11:43,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:11:43,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:11:43,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:11:43,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:11:43,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:11:43,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:11:43,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:11:43,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:11:43,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:11:43,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:11:43,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:11:43,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:11:43,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:11:43,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:11:43,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:11:43,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:11:43,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:11:43,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:11:43,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:11:43,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:11:43,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:11:43,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:11:43,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:11:43,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:11:43,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:11:43,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:11:43,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:11:43,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:11:43,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:11:43,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:11:43,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:11:43,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:11:43,821 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:11:43,821 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:11:43,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:11:43,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:11:43,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:11:43,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:11:43,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:11:43,824 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 12:11:43,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:11:43,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:11:43,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:11:43,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:11:43,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:11:43,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:11:43,842 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:11:43,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:11:43,842 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:11:43,842 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:11:43,842 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:11:43,843 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:11:43,843 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:11:43,843 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:11:43,843 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:11:43,843 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:11:43,843 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:11:43,843 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:11:43,844 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:11:43,844 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:11:43,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:11:43,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:11:43,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:11:43,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:11:43,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:11:43,845 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:11:43,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:11:43,845 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:11:43,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:11:43,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:11:43,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:11:43,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:11:43,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:11:43,846 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:11:43,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:11:43,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:11:43,847 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:11:43,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:11:43,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:11:43,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:11:43,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> faa806fd1be90697a522dfc0988145f6572d5d87fac98caf7aa5fe5b66e6095c [2022-12-14 12:11:44,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:11:44,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:11:44,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:11:44,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:11:44,032 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:11:44,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-12-14 12:11:46,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:11:46,728 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:11:46,729 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/sv-benchmarks/c/termination-restricted-15/McCarthyIterative.c [2022-12-14 12:11:46,734 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/data/988ce42ca/72009a88fc8d427d9fb951a329a2bc8a/FLAGa9efb9a26 [2022-12-14 12:11:47,126 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/data/988ce42ca/72009a88fc8d427d9fb951a329a2bc8a [2022-12-14 12:11:47,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:11:47,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:11:47,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:11:47,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:11:47,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:11:47,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b076c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47, skipping insertion in model container [2022-12-14 12:11:47,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:11:47,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:11:47,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:11:47,267 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:11:47,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:11:47,288 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:11:47,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47 WrapperNode [2022-12-14 12:11:47,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:11:47,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:11:47,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:11:47,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:11:47,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,313 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-12-14 12:11:47,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:11:47,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:11:47,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:11:47,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:11:47,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,325 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:11:47,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:11:47,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:11:47,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:11:47,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (1/1) ... [2022-12-14 12:11:47,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:11:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:11:47,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:11:47,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:11:47,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:11:47,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:11:47,463 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:11:47,464 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:11:47,531 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:11:47,543 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:11:47,543 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 12:11:47,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:11:47 BoogieIcfgContainer [2022-12-14 12:11:47,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:11:47,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:11:47,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:11:47,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:11:47,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:11:47" (1/3) ... [2022-12-14 12:11:47,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:11:47, skipping insertion in model container [2022-12-14 12:11:47,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:11:47" (2/3) ... [2022-12-14 12:11:47,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6ae3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:11:47, skipping insertion in model container [2022-12-14 12:11:47,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:11:47" (3/3) ... [2022-12-14 12:11:47,551 INFO L112 eAbstractionObserver]: Analyzing ICFG McCarthyIterative.c [2022-12-14 12:11:47,564 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:11:47,565 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 12:11:47,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:11:47,604 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5017166f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:11:47,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 12:11:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 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) [2022-12-14 12:11:47,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:11:47,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:47,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:11:47,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2186083, now seen corresponding path program 1 times [2022-12-14 12:11:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:47,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64905014] [2022-12-14 12:11:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:47,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:47,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:47,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:47,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64905014] [2022-12-14 12:11:47,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64905014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:47,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:47,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:11:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790409199] [2022-12-14 12:11:47,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:47,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:11:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:47,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:11:47,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:11:47,758 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 19 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) 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) [2022-12-14 12:11:47,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:47,804 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-12-14 12:11:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:11:47,807 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 [2022-12-14 12:11:47,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:47,815 INFO L225 Difference]: With dead ends: 30 [2022-12-14 12:11:47,815 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 12:11:47,818 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:11:47,821 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:47,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:47,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 12:11:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-12-14 12:11:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 12:11:47,846 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 4 [2022-12-14 12:11:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:47,847 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 12:11:47,847 INFO L496 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) [2022-12-14 12:11:47,847 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 12:11:47,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:11:47,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:47,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:11:47,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:11:47,849 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:47,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 2185763, now seen corresponding path program 1 times [2022-12-14 12:11:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:47,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100503420] [2022-12-14 12:11:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:47,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:47,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100503420] [2022-12-14 12:11:47,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100503420] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:47,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:47,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:11:47,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461341229] [2022-12-14 12:11:47,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:47,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:11:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:11:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:11:47,881 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:47,899 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-12-14 12:11:47,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:11:47,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 12:11:47,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:47,900 INFO L225 Difference]: With dead ends: 25 [2022-12-14 12:11:47,900 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 12:11:47,900 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:11:47,901 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:47,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:47,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 12:11:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 12:11:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2022-12-14 12:11:47,905 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 4 [2022-12-14 12:11:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:47,906 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2022-12-14 12:11:47,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:47,906 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2022-12-14 12:11:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:11:47,906 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:47,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:11:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:11:47,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 67768631, now seen corresponding path program 1 times [2022-12-14 12:11:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:47,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669495272] [2022-12-14 12:11:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:47,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:47,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669495272] [2022-12-14 12:11:47,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669495272] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:47,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:47,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:11:47,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762149439] [2022-12-14 12:11:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:47,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:11:47,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:11:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:11:47,945 INFO L87 Difference]: Start difference. First operand 24 states and 29 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) [2022-12-14 12:11:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:47,967 INFO L93 Difference]: Finished difference Result 24 states and 29 transitions. [2022-12-14 12:11:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:11:47,968 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 [2022-12-14 12:11:47,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:47,969 INFO L225 Difference]: With dead ends: 24 [2022-12-14 12:11:47,969 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 12:11:47,969 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:11:47,971 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:47,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:47,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 12:11:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 12:11:47,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.588235294117647) internal successors, (27), 22 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) [2022-12-14 12:11:47,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-14 12:11:47,975 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 5 [2022-12-14 12:11:47,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:47,975 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-14 12:11:47,975 INFO L496 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) [2022-12-14 12:11:47,975 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-14 12:11:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:11:47,976 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:47,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:11:47,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:11:47,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:47,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:47,977 INFO L85 PathProgramCache]: Analyzing trace with hash 67758701, now seen corresponding path program 1 times [2022-12-14 12:11:47,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:47,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813552835] [2022-12-14 12:11:47,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:47,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:47,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813552835] [2022-12-14 12:11:47,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813552835] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:47,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:47,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:11:47,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270003233] [2022-12-14 12:11:47,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:47,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:11:47,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:11:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:11:47,999 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:48,013 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-12-14 12:11:48,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:11:48,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:11:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:48,014 INFO L225 Difference]: With dead ends: 23 [2022-12-14 12:11:48,015 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 12:11:48,015 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:11:48,016 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:48,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 12:11:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-12-14 12:11:48,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-12-14 12:11:48,020 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 5 [2022-12-14 12:11:48,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:48,020 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-12-14 12:11:48,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-12-14 12:11:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:11:48,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:48,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:11:48,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:11:48,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:48,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:48,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2100827621, now seen corresponding path program 1 times [2022-12-14 12:11:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:48,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288162699] [2022-12-14 12:11:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:48,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288162699] [2022-12-14 12:11:48,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288162699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:48,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:48,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:11:48,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187505610] [2022-12-14 12:11:48,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:48,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:11:48,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:48,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:11:48,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:11:48,049 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:48,065 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-12-14 12:11:48,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:11:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 12:11:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:48,066 INFO L225 Difference]: With dead ends: 23 [2022-12-14 12:11:48,066 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 12:11:48,067 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:11:48,068 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 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 [2022-12-14 12:11:48,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:48,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 12:11:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-12-14 12:11:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-14 12:11:48,071 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 6 [2022-12-14 12:11:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-14 12:11:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 12:11:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:11:48,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:48,072 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:11:48,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:11:48,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash 701146873, now seen corresponding path program 1 times [2022-12-14 12:11:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:48,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838231921] [2022-12-14 12:11:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:48,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,101 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:48,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838231921] [2022-12-14 12:11:48,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838231921] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:48,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:48,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:11:48,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666716914] [2022-12-14 12:11:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:48,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:11:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:48,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:11:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:11:48,104 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:48,124 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-12-14 12:11:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:11:48,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 12:11:48,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:48,125 INFO L225 Difference]: With dead ends: 39 [2022-12-14 12:11:48,125 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 12:11:48,125 INFO L412 NwaCegarLoop]: 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 [2022-12-14 12:11:48,126 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:48,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:48,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 12:11:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2022-12-14 12:11:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-12-14 12:11:48,134 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 7 [2022-12-14 12:11:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:48,134 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-12-14 12:11:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-12-14 12:11:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:11:48,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:48,135 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:11:48,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:11:48,136 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash 611413212, now seen corresponding path program 1 times [2022-12-14 12:11:48,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:48,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717360316] [2022-12-14 12:11:48,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:48,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717360316] [2022-12-14 12:11:48,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717360316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:48,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:48,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:11:48,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000087690] [2022-12-14 12:11:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:11:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:11:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:11:48,169 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:48,192 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2022-12-14 12:11:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:11:48,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 12:11:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:48,193 INFO L225 Difference]: With dead ends: 54 [2022-12-14 12:11:48,193 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 12:11:48,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:11:48,195 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:48,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 23 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:48,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 12:11:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 12:11:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 12:11:48,200 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2022-12-14 12:11:48,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:48,201 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 12:11:48,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 12:11:48,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 12:11:48,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:48,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 12:11:48,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:11:48,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash 833602794, now seen corresponding path program 1 times [2022-12-14 12:11:48,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:48,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118225374] [2022-12-14 12:11:48,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:48,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118225374] [2022-12-14 12:11:48,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118225374] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:11:48,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317737856] [2022-12-14 12:11:48,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:48,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:11:48,254 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:11:48,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:11:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:11:48,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:11:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:11:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317737856] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:11:48,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1900566929] [2022-12-14 12:11:48,381 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:11:48,381 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:11:48,384 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:11:48,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:11:48,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:11:48,471 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:11:48,550 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '555#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:11:48,550 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:11:48,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:11:48,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:11:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657261059] [2022-12-14 12:11:48,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:11:48,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:11:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:11:48,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:11:48,553 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:48,596 INFO L93 Difference]: Finished difference Result 90 states and 109 transitions. [2022-12-14 12:11:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:11:48,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 12:11:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:48,597 INFO L225 Difference]: With dead ends: 90 [2022-12-14 12:11:48,597 INFO L226 Difference]: Without dead ends: 88 [2022-12-14 12:11:48,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 12:11:48,598 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:48,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 41 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:48,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-14 12:11:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2022-12-14 12:11:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 75 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2022-12-14 12:11:48,609 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 13 [2022-12-14 12:11:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:48,609 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2022-12-14 12:11:48,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,609 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2022-12-14 12:11:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 12:11:48,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:48,610 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:11:48,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:11:48,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:48,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:48,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:48,812 INFO L85 PathProgramCache]: Analyzing trace with hash -469189301, now seen corresponding path program 1 times [2022-12-14 12:11:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:48,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639171033] [2022-12-14 12:11:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:11:48,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:48,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639171033] [2022-12-14 12:11:48,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639171033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:11:48,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:11:48,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:11:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369321914] [2022-12-14 12:11:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:11:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:11:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:11:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:11:48,878 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2022-12-14 12:11:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:48,897 INFO L93 Difference]: Finished difference Result 103 states and 122 transitions. [2022-12-14 12:11:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:11:48,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 12:11:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:48,898 INFO L225 Difference]: With dead ends: 103 [2022-12-14 12:11:48,898 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 12:11:48,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:11:48,899 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:48,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 24 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:11:48,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 12:11:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2022-12-14 12:11:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 44 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2022-12-14 12:11:48,909 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 16 [2022-12-14 12:11:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:48,909 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2022-12-14 12:11:48,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2022-12-14 12:11:48,909 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2022-12-14 12:11:48,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 12:11:48,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:48,910 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1] [2022-12-14 12:11:48,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 12:11:48,910 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash 937527869, now seen corresponding path program 2 times [2022-12-14 12:11:48,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:48,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334960136] [2022-12-14 12:11:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:48,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:48,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:48,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334960136] [2022-12-14 12:11:48,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334960136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:11:48,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127345584] [2022-12-14 12:11:48,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:11:48,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:11:48,999 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:11:48,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:11:49,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 12:11:49,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:11:49,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:11:49,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:11:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:49,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:11:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:49,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127345584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:11:49,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [225109123] [2022-12-14 12:11:49,138 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:11:49,138 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:11:49,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:11:49,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:11:49,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:11:49,177 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:11:49,239 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1111#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:11:49,239 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:11:49,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:11:49,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 12:11:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460233391] [2022-12-14 12:11:49,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:11:49,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:11:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:11:49,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:11:49,242 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:49,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:49,315 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2022-12-14 12:11:49,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:11:49,315 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-12-14 12:11:49,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:49,316 INFO L225 Difference]: With dead ends: 187 [2022-12-14 12:11:49,316 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 12:11:49,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:11:49,317 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 44 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:49,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 83 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:11:49,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 12:11:49,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-12-14 12:11:49,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 80 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) [2022-12-14 12:11:49,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2022-12-14 12:11:49,322 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 31 [2022-12-14 12:11:49,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:49,322 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2022-12-14 12:11:49,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:49,322 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2022-12-14 12:11:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 12:11:49,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:49,324 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1] [2022-12-14 12:11:49,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:11:49,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 12:11:49,525 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1176934563, now seen corresponding path program 3 times [2022-12-14 12:11:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:49,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018667552] [2022-12-14 12:11:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:49,789 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:49,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:49,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018667552] [2022-12-14 12:11:49,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018667552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:11:49,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209568542] [2022-12-14 12:11:49,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:11:49,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:49,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:11:49,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:11:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:11:49,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:11:49,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:11:49,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:11:49,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:11:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:49,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:11:50,119 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:50,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209568542] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:11:50,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98751746] [2022-12-14 12:11:50,121 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:11:50,121 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:11:50,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:11:50,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:11:50,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:11:50,166 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:11:50,244 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1846#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:11:50,244 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:11:50,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:11:50,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 12:11:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799842360] [2022-12-14 12:11:50,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:11:50,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 12:11:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 12:11:50,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=521, Unknown=0, NotChecked=0, Total=812 [2022-12-14 12:11:50,246 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:50,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:50,419 INFO L93 Difference]: Finished difference Result 403 states and 490 transitions. [2022-12-14 12:11:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 12:11:50,419 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 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 67 [2022-12-14 12:11:50,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:50,420 INFO L225 Difference]: With dead ends: 403 [2022-12-14 12:11:50,420 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 12:11:50,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=291, Invalid=521, Unknown=0, NotChecked=0, Total=812 [2022-12-14 12:11:50,422 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 140 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:50,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 197 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:11:50,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 12:11:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-12-14 12:11:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.033112582781457) internal successors, (156), 152 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2022-12-14 12:11:50,435 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 67 [2022-12-14 12:11:50,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:50,435 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2022-12-14 12:11:50,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 23 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:50,436 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2022-12-14 12:11:50,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-14 12:11:50,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:50,438 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1] [2022-12-14 12:11:50,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 12:11:50,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 12:11:50,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:50,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:50,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1627388817, now seen corresponding path program 4 times [2022-12-14 12:11:50,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:50,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716277804] [2022-12-14 12:11:50,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:50,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:51,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:51,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716277804] [2022-12-14 12:11:51,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716277804] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:11:51,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550418689] [2022-12-14 12:11:51,229 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:11:51,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:51,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:11:51,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:11:51,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:11:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:51,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:11:51,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:11:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:51,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:11:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:52,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550418689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:11:52,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1921882003] [2022-12-14 12:11:52,035 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:11:52,035 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:11:52,035 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:11:52,035 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:11:52,035 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:11:52,060 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:11:52,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3373#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:11:52,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:11:52,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:11:52,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 12:11:52,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928943699] [2022-12-14 12:11:52,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:11:52,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 12:11:52,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:52,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 12:11:52,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1143, Invalid=1613, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 12:11:52,148 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 47 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:52,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:52,520 INFO L93 Difference]: Finished difference Result 835 states and 1018 transitions. [2022-12-14 12:11:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 12:11:52,520 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 47 states have internal predecessors, (278), 0 states have call successors, (0), 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 139 [2022-12-14 12:11:52,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:52,521 INFO L225 Difference]: With dead ends: 835 [2022-12-14 12:11:52,521 INFO L226 Difference]: Without dead ends: 297 [2022-12-14 12:11:52,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1143, Invalid=1613, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 12:11:52,523 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 332 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:52,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 506 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:11:52,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-14 12:11:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2022-12-14 12:11:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 295 states have (on average 1.0169491525423728) internal successors, (300), 296 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:52,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 300 transitions. [2022-12-14 12:11:52,539 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 300 transitions. Word has length 139 [2022-12-14 12:11:52,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:52,540 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 300 transitions. [2022-12-14 12:11:52,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 47 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:52,540 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 300 transitions. [2022-12-14 12:11:52,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-14 12:11:52,545 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:52,545 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 1, 1] [2022-12-14 12:11:52,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:11:52,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:52,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:52,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:52,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1881532409, now seen corresponding path program 5 times [2022-12-14 12:11:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:52,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219992695] [2022-12-14 12:11:52,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:52,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:11:54,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:54,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:11:54,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219992695] [2022-12-14 12:11:54,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219992695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:11:54,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087810387] [2022-12-14 12:11:54,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:11:54,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:11:54,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:11:54,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:11:54,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:11:54,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 12:11:54,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:11:54,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 12:11:54,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:11:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:54,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:11:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:11:56,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087810387] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:11:56,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [843795338] [2022-12-14 12:11:56,640 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:11:56,640 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:11:56,640 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:11:56,641 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:11:56,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:11:56,666 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:11:56,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6484#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:11:56,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:11:56,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:11:56,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 12:11:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310191257] [2022-12-14 12:11:56,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:11:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 12:11:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:11:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 12:11:56,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4575, Invalid=5525, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 12:11:56,799 INFO L87 Difference]: Start difference. First operand 297 states and 300 transitions. Second operand has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 95 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:11:57,840 INFO L93 Difference]: Finished difference Result 1699 states and 2074 transitions. [2022-12-14 12:11:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 12:11:57,841 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 95 states have internal predecessors, (566), 0 states have call successors, (0), 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 283 [2022-12-14 12:11:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:11:57,843 INFO L225 Difference]: With dead ends: 1699 [2022-12-14 12:11:57,843 INFO L226 Difference]: Without dead ends: 585 [2022-12-14 12:11:57,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4575, Invalid=5525, Unknown=0, NotChecked=0, Total=10100 [2022-12-14 12:11:57,845 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 804 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:11:57,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1175 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:11:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-12-14 12:11:57,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-12-14 12:11:57,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 583 states have (on average 1.0085763293310464) internal successors, (588), 584 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 588 transitions. [2022-12-14 12:11:57,861 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 588 transitions. Word has length 283 [2022-12-14 12:11:57,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:11:57,861 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 588 transitions. [2022-12-14 12:11:57,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 95 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:11:57,862 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 588 transitions. [2022-12-14 12:11:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-12-14 12:11:57,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:11:57,872 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 1, 1] [2022-12-14 12:11:57,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:11:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 12:11:58,074 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:11:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:11:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash -679792841, now seen corresponding path program 6 times [2022-12-14 12:11:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:11:58,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983941347] [2022-12-14 12:11:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:11:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:11:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:12:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:12:03,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:12:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983941347] [2022-12-14 12:12:03,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983941347] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:12:03,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678404057] [2022-12-14 12:12:03,634 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:12:03,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:12:03,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:12:03,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:12:03,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:12:03,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:12:03,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:12:03,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 12:12:03,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:12:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:12:04,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:12:11,828 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:12:11,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678404057] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:12:11,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2050961551] [2022-12-14 12:12:11,830 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:12:11,830 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:12:11,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:12:11,830 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:12:11,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:12:11,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:12:12,121 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12763#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:12:12,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:12:12,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:12:12,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 12:12:12,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966840681] [2022-12-14 12:12:12,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:12:12,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 12:12:12,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:12:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 12:12:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18351, Invalid=20261, Unknown=0, NotChecked=0, Total=38612 [2022-12-14 12:12:12,131 INFO L87 Difference]: Start difference. First operand 585 states and 588 transitions. Second operand has 192 states, 191 states have (on average 5.979057591623037) internal successors, (1142), 191 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:12:17,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:12:17,836 INFO L93 Difference]: Finished difference Result 3427 states and 4186 transitions. [2022-12-14 12:12:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 12:12:17,837 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.979057591623037) internal successors, (1142), 191 states have internal predecessors, (1142), 0 states have call successors, (0), 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 571 [2022-12-14 12:12:17,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:12:17,841 INFO L225 Difference]: With dead ends: 3427 [2022-12-14 12:12:17,841 INFO L226 Difference]: Without dead ends: 1161 [2022-12-14 12:12:17,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1806 GetRequests, 1611 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=18351, Invalid=20261, Unknown=0, NotChecked=0, Total=38612 [2022-12-14 12:12:17,848 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2064 mSDsluCounter, 2082 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 2399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:12:17,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 2372 Invalid, 2399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 12:12:17,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2022-12-14 12:12:17,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2022-12-14 12:12:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1159 states have (on average 1.004314063848145) internal successors, (1164), 1160 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:12:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1164 transitions. [2022-12-14 12:12:17,875 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1164 transitions. Word has length 571 [2022-12-14 12:12:17,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:12:17,876 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 1164 transitions. [2022-12-14 12:12:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.979057591623037) internal successors, (1142), 191 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:12:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1164 transitions. [2022-12-14 12:12:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1148 [2022-12-14 12:12:17,916 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:12:17,916 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 1, 1] [2022-12-14 12:12:17,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 12:12:18,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:12:18,118 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:12:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:12:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash -386851433, now seen corresponding path program 7 times [2022-12-14 12:12:18,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:12:18,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80350132] [2022-12-14 12:12:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:12:18,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:12:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:12:43,097 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:12:43,097 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:12:43,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80350132] [2022-12-14 12:12:43,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80350132] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:12:43,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022047296] [2022-12-14 12:12:43,098 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:12:43,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:12:43,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:12:43,098 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:12:43,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:12:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:12:43,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1914 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 12:12:43,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:12:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:12:44,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:13:10,971 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:13:10,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022047296] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:13:10,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [96470765] [2022-12-14 12:13:10,973 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:13:10,973 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:13:10,973 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:13:10,973 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:13:10,973 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:13:10,996 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:13:11,341 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25378#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:13:11,341 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:13:11,341 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:13:11,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 12:13:11,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844645193] [2022-12-14 12:13:11,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:13:11,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 12:13:11,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:13:11,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 12:13:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73551, Invalid=77381, Unknown=0, NotChecked=0, Total=150932 [2022-12-14 12:13:11,367 INFO L87 Difference]: Start difference. First operand 1161 states and 1164 transitions. Second operand has 384 states, 383 states have (on average 5.989556135770235) internal successors, (2294), 383 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:14:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:14:05,874 INFO L93 Difference]: Finished difference Result 6883 states and 8410 transitions. [2022-12-14 12:14:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 12:14:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.989556135770235) internal successors, (2294), 383 states have internal predecessors, (2294), 0 states have call successors, (0), 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 1147 [2022-12-14 12:14:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:14:05,879 INFO L225 Difference]: With dead ends: 6883 [2022-12-14 12:14:05,879 INFO L226 Difference]: Without dead ends: 2313 [2022-12-14 12:14:05,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3630 GetRequests, 3243 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=73551, Invalid=77381, Unknown=0, NotChecked=0, Total=150932 [2022-12-14 12:14:05,888 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 4480 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 3893 mSolverCounterSat, 1317 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 5258 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1317 IncrementalHoareTripleChecker+Valid, 3893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:14:05,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4480 Valid, 5258 Invalid, 5210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1317 Valid, 3893 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-14 12:14:05,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2022-12-14 12:14:05,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2313. [2022-12-14 12:14:05,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2313 states, 2311 states have (on average 1.0021635655560364) internal successors, (2316), 2312 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:14:05,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2313 states to 2313 states and 2316 transitions. [2022-12-14 12:14:05,946 INFO L78 Accepts]: Start accepts. Automaton has 2313 states and 2316 transitions. Word has length 1147 [2022-12-14 12:14:05,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:14:05,948 INFO L495 AbstractCegarLoop]: Abstraction has 2313 states and 2316 transitions. [2022-12-14 12:14:05,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.989556135770235) internal successors, (2294), 383 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:14:05,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2313 states and 2316 transitions. [2022-12-14 12:14:05,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2300 [2022-12-14 12:14:05,978 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:14:05,979 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 383, 382, 1, 1] [2022-12-14 12:14:05,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 12:14:06,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:14:06,180 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 12:14:06,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:14:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1756101207, now seen corresponding path program 8 times [2022-12-14 12:14:06,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:14:06,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528568402] [2022-12-14 12:14:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:14:06,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:14:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:16:42,964 INFO L134 CoverageAnalysis]: Checked inductivity of 438918 backedges. 0 proven. 438918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:16:42,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:16:42,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528568402] [2022-12-14 12:16:42,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528568402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:16:42,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038825450] [2022-12-14 12:16:42,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:16:42,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:16:42,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:16:42,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:16:42,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a5fd1db-92c6-4f08-a032-35a4b9fa9f85/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:16:46,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 12:16:46,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:16:46,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 3834 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 12:16:46,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:16:48,533 INFO L134 CoverageAnalysis]: Checked inductivity of 438918 backedges. 0 proven. 438918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:16:48,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 438918 backedges. 0 proven. 438918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:18:35,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038825450] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1670306765] [2022-12-14 12:18:35,372 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 12:18:35,373 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:35,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:35,373 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:35,373 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:35,399 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:36,148 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50665#(and (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483637)) (<= |ULTIMATE.start_main_~x~0#1| 111) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-12-14 12:18:36,149 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:36,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:36,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-12-14 12:18:36,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346755263] [2022-12-14 12:18:36,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:36,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 12:18:36,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 12:18:36,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294543, Invalid=302213, Unknown=0, NotChecked=0, Total=596756 [2022-12-14 12:18:36,225 INFO L87 Difference]: Start difference. First operand 2313 states and 2316 transitions. Second operand has 768 states, 767 states have (on average 5.994784876140808) internal successors, (4598), 767 states have internal predecessors, (4598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)