./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/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_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/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_1ccf1c10-cb28-4300-a643-49ab12134f72/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 5ecb51c2655999223e2701919887f64497e4c0c5e2f563d3d5ecc5c1480b1b8e --- 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 07:01:01,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:01:01,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:01:01,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:01:01,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:01:01,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:01:01,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:01:01,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:01:01,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:01:01,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:01:01,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:01:01,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:01:01,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:01:01,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:01:01,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:01:01,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:01:01,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:01:01,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:01:01,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:01:01,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:01:01,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:01:01,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:01:01,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:01:01,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:01:01,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:01:01,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:01:01,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:01:01,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:01:01,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:01:01,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:01:01,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:01:01,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:01:01,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:01:01,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:01:01,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:01:01,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:01:01,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:01:01,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:01:01,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:01:01,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:01:01,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:01:01,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 07:01:01,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:01:01,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:01:01,927 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:01:01,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:01:01,928 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:01:01,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:01:01,928 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:01:01,929 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:01:01,929 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:01:01,929 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:01:01,929 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:01:01,929 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:01:01,929 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:01:01,930 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:01:01,930 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:01:01,930 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:01:01,930 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:01:01,930 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:01:01,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:01:01,931 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:01:01,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:01:01,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:01:01,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:01:01,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:01:01,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:01:01,932 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:01:01,932 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:01:01,932 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:01:01,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:01:01,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:01:01,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:01:01,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:01:01,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:01:01,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:01:01,934 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_1ccf1c10-cb28-4300-a643-49ab12134f72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ecb51c2655999223e2701919887f64497e4c0c5e2f563d3d5ecc5c1480b1b8e [2022-12-14 07:01:02,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:01:02,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:01:02,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:01:02,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:01:02,139 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:01:02,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2022-12-14 07:01:04,766 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:01:04,883 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:01:04,883 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2022-12-14 07:01:04,889 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/data/17cf894af/b19ce8c7357946afa024f3b0bb998143/FLAG214049377 [2022-12-14 07:01:04,901 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/data/17cf894af/b19ce8c7357946afa024f3b0bb998143 [2022-12-14 07:01:04,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:01:04,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:01:04,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:01:04,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:01:04,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:01:04,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:01:04" (1/1) ... [2022-12-14 07:01:04,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb7320a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:04, skipping insertion in model container [2022-12-14 07:01:04,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:01:04" (1/1) ... [2022-12-14 07:01:04,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:01:04,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:01:05,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:01:05,032 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:01:05,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:01:05,052 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:01:05,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05 WrapperNode [2022-12-14 07:01:05,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:01:05,054 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:01:05,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:01:05,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:01:05,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,078 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-12-14 07:01:05,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:01:05,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:01:05,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:01:05,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:01:05,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,094 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:01:05,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:01:05,097 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:01:05,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:01:05,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (1/1) ... [2022-12-14 07:01:05,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:01:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:05,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:01:05,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:01:05,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:01:05,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:01:05,203 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:01:05,204 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:01:05,278 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:01:05,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:01:05,297 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 07:01:05,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:01:05 BoogieIcfgContainer [2022-12-14 07:01:05,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:01:05,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:01:05,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:01:05,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:01:05,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:01:04" (1/3) ... [2022-12-14 07:01:05,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720d5c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:01:05, skipping insertion in model container [2022-12-14 07:01:05,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:01:05" (2/3) ... [2022-12-14 07:01:05,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720d5c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:01:05, skipping insertion in model container [2022-12-14 07:01:05,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:01:05" (3/3) ... [2022-12-14 07:01:05,309 INFO L112 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-easy2.c [2022-12-14 07:01:05,325 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:01:05,325 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 07:01:05,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:01:05,380 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;@330e141c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:01:05,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 07:01:05,384 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 07:01:05,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 07:01:05,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 60896, now seen corresponding path program 1 times [2022-12-14 07:01:05,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449357471] [2022-12-14 07:01:05,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,515 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 07:01:05,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449357471] [2022-12-14 07:01:05,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449357471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:05,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:05,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:01:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026613557] [2022-12-14 07:01:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:05,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:05,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:05,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:05,554 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:05,575 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-14 07:01:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:05,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 07:01:05,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:05,583 INFO L225 Difference]: With dead ends: 15 [2022-12-14 07:01:05,583 INFO L226 Difference]: Without dead ends: 13 [2022-12-14 07:01:05,585 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 07:01:05,588 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:05,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:05,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-12-14 07:01:05,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-12-14 07:01:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.625) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-12-14 07:01:05,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 3 [2022-12-14 07:01:05,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:05,612 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-12-14 07:01:05,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,613 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-12-14 07:01:05,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:01:05,613 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:01:05,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:01:05,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1887821, now seen corresponding path program 1 times [2022-12-14 07:01:05,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893847097] [2022-12-14 07:01:05,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,634 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 07:01:05,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893847097] [2022-12-14 07:01:05,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893847097] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:05,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:05,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:01:05,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902440724] [2022-12-14 07:01:05,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:05,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:05,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:05,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:05,638 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:05,649 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 07:01:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:05,650 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 07:01:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:05,650 INFO L225 Difference]: With dead ends: 17 [2022-12-14 07:01:05,650 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 07:01:05,651 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 07:01:05,652 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:05,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 07:01:05,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 07:01:05,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-12-14 07:01:05,663 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2022-12-14 07:01:05,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:05,663 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-12-14 07:01:05,663 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 07:01:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-12-14 07:01:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:01:05,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:01:05,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:01:05,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 58522498, now seen corresponding path program 1 times [2022-12-14 07:01:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946172556] [2022-12-14 07:01:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,705 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 07:01:05,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946172556] [2022-12-14 07:01:05,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946172556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:05,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:05,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:01:05,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085305169] [2022-12-14 07:01:05,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:05,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:05,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:05,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:05,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:05,708 INFO L87 Difference]: Start difference. First operand 16 states and 16 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 07:01:05,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:05,722 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-12-14 07:01:05,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:05,723 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 07:01:05,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:05,723 INFO L225 Difference]: With dead ends: 19 [2022-12-14 07:01:05,723 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 07:01:05,724 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 07:01:05,725 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:05,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:05,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 07:01:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-12-14 07:01:05,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-12-14 07:01:05,730 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 5 [2022-12-14 07:01:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:05,730 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-12-14 07:01:05,730 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 07:01:05,730 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-12-14 07:01:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:01:05,731 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:01:05,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:01:05,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1814197487, now seen corresponding path program 1 times [2022-12-14 07:01:05,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900692592] [2022-12-14 07:01:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,763 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 07:01:05,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900692592] [2022-12-14 07:01:05,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900692592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:05,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:05,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:01:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946028686] [2022-12-14 07:01:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:05,765 INFO L87 Difference]: Start difference. First operand 17 states and 17 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 07:01:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:05,775 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-12-14 07:01:05,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:05,776 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 07:01:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:05,776 INFO L225 Difference]: With dead ends: 17 [2022-12-14 07:01:05,776 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 07:01:05,777 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 07:01:05,778 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:05,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 07:01:05,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 07:01:05,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-12-14 07:01:05,783 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 6 [2022-12-14 07:01:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:05,783 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-12-14 07:01:05,783 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 07:01:05,783 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-12-14 07:01:05,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:01:05,784 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:01:05,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:01:05,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,785 INFO L85 PathProgramCache]: Analyzing trace with hash 405547300, now seen corresponding path program 1 times [2022-12-14 07:01:05,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411431479] [2022-12-14 07:01:05,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,814 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 07:01:05,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411431479] [2022-12-14 07:01:05,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411431479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:05,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:05,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:01:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147516305] [2022-12-14 07:01:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:05,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:05,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:05,816 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:05,825 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-12-14 07:01:05,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:05,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:01:05,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:05,826 INFO L225 Difference]: With dead ends: 16 [2022-12-14 07:01:05,826 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 07:01:05,826 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 07:01:05,827 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:05,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:05,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 07:01:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 07:01:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-12-14 07:01:05,832 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2022-12-14 07:01:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:05,832 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-12-14 07:01:05,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-12-14 07:01:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 07:01:05,833 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:01:05,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:01:05,834 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,834 INFO L85 PathProgramCache]: Analyzing trace with hash -312935535, now seen corresponding path program 1 times [2022-12-14 07:01:05,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609501591] [2022-12-14 07:01:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,862 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 07:01:05,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609501591] [2022-12-14 07:01:05,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609501591] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:01:05,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:01:05,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:01:05,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342715824] [2022-12-14 07:01:05,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:01:05,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:01:05,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:01:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:01:05,865 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:05,872 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-12-14 07:01:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:01:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 07:01:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:05,873 INFO L225 Difference]: With dead ends: 15 [2022-12-14 07:01:05,873 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 07:01:05,873 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 07:01:05,874 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:05,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 07:01:05,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 07:01:05,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-12-14 07:01:05,878 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2022-12-14 07:01:05,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:05,878 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-12-14 07:01:05,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:05,878 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-12-14 07:01:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:01:05,879 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:05,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:01:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:01:05,879 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1711517210, now seen corresponding path program 1 times [2022-12-14 07:01:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:05,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699732795] [2022-12-14 07:01:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:05,921 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:05,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699732795] [2022-12-14 07:01:05,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699732795] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:05,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133886047] [2022-12-14 07:01:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:05,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:05,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:05,923 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:05,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:01:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:05,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:01:05,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:06,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:06,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:06,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133886047] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:06,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1699020585] [2022-12-14 07:01:06,058 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:06,058 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:06,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:06,066 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:06,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:06,198 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:06,278 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '314#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:01:06,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:06,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:06,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 07:01:06,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246352998] [2022-12-14 07:01:06,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:06,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:01:06,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:06,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:01:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:01:06,281 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:06,304 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2022-12-14 07:01:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:01:06,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 07:01:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:06,305 INFO L225 Difference]: With dead ends: 37 [2022-12-14 07:01:06,305 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 07:01:06,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:01:06,306 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:06,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 07:01:06,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2022-12-14 07:01:06,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:06,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2022-12-14 07:01:06,312 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 11 [2022-12-14 07:01:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:06,312 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2022-12-14 07:01:06,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:06,313 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2022-12-14 07:01:06,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 07:01:06,313 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:06,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 07:01:06,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:01:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:06,514 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:06,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1517426005, now seen corresponding path program 1 times [2022-12-14 07:01:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:06,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845090068] [2022-12-14 07:01:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:06,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:06,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:06,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845090068] [2022-12-14 07:01:06,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845090068] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:06,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061079481] [2022-12-14 07:01:06,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:06,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:06,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:06,550 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:06,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:01:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:06,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 07:01:06,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:06,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:06,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061079481] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1603937695] [2022-12-14 07:01:06,631 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:06,631 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:06,631 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:06,632 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:06,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:06,696 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:06,760 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '473#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:01:06,761 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:06,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:06,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 07:01:06,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75598317] [2022-12-14 07:01:06,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:06,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:01:06,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:06,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:01:06,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:01:06,762 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 07:01:06,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:06,779 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2022-12-14 07:01:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:01:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 07:01:06,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:06,780 INFO L225 Difference]: With dead ends: 36 [2022-12-14 07:01:06,780 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 07:01:06,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:01:06,781 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:06,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 29 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:06,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 07:01:06,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-14 07:01:06,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2022-12-14 07:01:06,785 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 12 [2022-12-14 07:01:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:06,785 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2022-12-14 07:01:06,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 07:01:06,785 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2022-12-14 07:01:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 07:01:06,786 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:06,786 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1] [2022-12-14 07:01:06,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:01:06,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:06,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:06,987 INFO L85 PathProgramCache]: Analyzing trace with hash -722565875, now seen corresponding path program 2 times [2022-12-14 07:01:06,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:06,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703961608] [2022-12-14 07:01:06,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:06,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:07,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:07,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703961608] [2022-12-14 07:01:07,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703961608] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:07,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592331512] [2022-12-14 07:01:07,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:01:07,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:07,071 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:07,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:01:07,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:01:07,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:07,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:01:07,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:07,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:07,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592331512] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:07,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1062429395] [2022-12-14 07:01:07,218 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:07,218 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:07,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:07,218 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:07,218 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:07,264 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:07,339 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '758#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:01:07,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:07,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:07,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 07:01:07,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355109700] [2022-12-14 07:01:07,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:07,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:01:07,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:07,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:01:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:01:07,342 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:07,376 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2022-12-14 07:01:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:01:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-12-14 07:01:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:07,377 INFO L225 Difference]: With dead ends: 82 [2022-12-14 07:01:07,378 INFO L226 Difference]: Without dead ends: 81 [2022-12-14 07:01:07,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:01:07,379 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:07,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-12-14 07:01:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2022-12-14 07:01:07,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2022-12-14 07:01:07,386 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 32 [2022-12-14 07:01:07,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:07,386 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2022-12-14 07:01:07,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:01:07,386 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2022-12-14 07:01:07,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 07:01:07,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:07,387 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1] [2022-12-14 07:01:07,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:01:07,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 07:01:07,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash -924705598, now seen corresponding path program 2 times [2022-12-14 07:01:07,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:07,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838522967] [2022-12-14 07:01:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:07,667 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:07,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838522967] [2022-12-14 07:01:07,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838522967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:07,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823393281] [2022-12-14 07:01:07,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:01:07,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:07,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:07,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:07,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:01:07,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 07:01:07,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:07,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:01:07,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:07,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:07,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823393281] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:07,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685959525] [2022-12-14 07:01:07,829 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:07,829 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:07,829 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:07,829 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:07,830 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:07,866 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:07,932 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1148#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:01:07,932 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:07,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:07,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 07:01:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407509646] [2022-12-14 07:01:07,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:07,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 07:01:07,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:07,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 07:01:07,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:01:07,934 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:01:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:07,965 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2022-12-14 07:01:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 07:01:07,965 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 33 [2022-12-14 07:01:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:07,966 INFO L225 Difference]: With dead ends: 78 [2022-12-14 07:01:07,966 INFO L226 Difference]: Without dead ends: 77 [2022-12-14 07:01:07,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-12-14 07:01:07,967 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:07,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 59 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:07,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-14 07:01:07,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-14 07:01:07,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 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 07:01:07,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-12-14 07:01:07,974 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 33 [2022-12-14 07:01:07,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:07,974 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-12-14 07:01:07,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 07:01:07,975 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-12-14 07:01:07,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 07:01:07,976 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:07,976 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1] [2022-12-14 07:01:07,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:01:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 07:01:08,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:08,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:08,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1320088787, now seen corresponding path program 3 times [2022-12-14 07:01:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:08,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287339155] [2022-12-14 07:01:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:08,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287339155] [2022-12-14 07:01:08,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287339155] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:08,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173876628] [2022-12-14 07:01:08,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:01:08,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:08,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:08,336 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:08,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:01:08,380 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:01:08,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:08,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 07:01:08,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:08,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:08,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173876628] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:08,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1892526494] [2022-12-14 07:01:08,658 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:08,658 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:08,658 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:08,658 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:08,658 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:08,707 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:08,789 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1793#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:01:08,789 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:08,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:08,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 07:01:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140717452] [2022-12-14 07:01:08,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:08,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 07:01:08,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:08,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 07:01:08,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:01:08,791 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 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 07:01:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:08,854 INFO L93 Difference]: Finished difference Result 172 states and 183 transitions. [2022-12-14 07:01:08,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 07:01:08,854 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-12-14 07:01:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:08,855 INFO L225 Difference]: With dead ends: 172 [2022-12-14 07:01:08,855 INFO L226 Difference]: Without dead ends: 171 [2022-12-14 07:01:08,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=299, Invalid=571, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:01:08,857 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:08,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 132 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:08,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-12-14 07:01:08,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 160. [2022-12-14 07:01:08,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 1.0822784810126582) internal successors, (171), 159 states have internal predecessors, (171), 0 states have call successors, (0), 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 07:01:08,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2022-12-14 07:01:08,868 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 74 [2022-12-14 07:01:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:08,869 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2022-12-14 07:01:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 23 states have internal predecessors, (148), 0 states have call successors, (0), 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 07:01:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2022-12-14 07:01:08,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 07:01:08,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:08,870 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 1, 1] [2022-12-14 07:01:08,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 07:01:09,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:09,071 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2026920610, now seen corresponding path program 3 times [2022-12-14 07:01:09,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:09,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503913706] [2022-12-14 07:01:09,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:09,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:09,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503913706] [2022-12-14 07:01:09,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503913706] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:09,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799854655] [2022-12-14 07:01:09,274 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:01:09,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:09,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:09,275 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:09,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:01:09,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:01:09,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:09,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 07:01:09,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:09,402 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:09,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 355 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799854655] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [363947593] [2022-12-14 07:01:09,617 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:09,618 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:09,618 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:09,618 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:09,618 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:09,654 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:09,747 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2645#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:01:09,747 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:09,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:09,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 07:01:09,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470808188] [2022-12-14 07:01:09,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 07:01:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 07:01:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=569, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:01:09,750 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 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 07:01:09,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:09,820 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2022-12-14 07:01:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 07:01:09,820 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 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 75 [2022-12-14 07:01:09,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:09,822 INFO L225 Difference]: With dead ends: 162 [2022-12-14 07:01:09,822 INFO L226 Difference]: Without dead ends: 161 [2022-12-14 07:01:09,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=301, Invalid=569, Unknown=0, NotChecked=0, Total=870 [2022-12-14 07:01:09,823 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:09,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 121 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:01:09,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-12-14 07:01:09,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-12-14 07:01:09,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 160 states have internal predecessors, (161), 0 states have call successors, (0), 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 07:01:09,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 161 transitions. [2022-12-14 07:01:09,830 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 161 transitions. Word has length 75 [2022-12-14 07:01:09,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:09,830 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 161 transitions. [2022-12-14 07:01:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 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 07:01:09,830 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 161 transitions. [2022-12-14 07:01:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-14 07:01:09,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:09,832 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 1, 1] [2022-12-14 07:01:09,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:01:10,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 07:01:10,032 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:10,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:10,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1637556077, now seen corresponding path program 4 times [2022-12-14 07:01:10,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:10,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501368443] [2022-12-14 07:01:10,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:10,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:10,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501368443] [2022-12-14 07:01:10,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501368443] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:10,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252431190] [2022-12-14 07:01:10,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:01:10,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:10,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:10,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:01:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:10,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 07:01:10,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:10,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:10,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 1683 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:11,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252431190] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:11,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1499904155] [2022-12-14 07:01:11,298 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:11,298 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:11,298 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:11,298 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:11,298 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:11,337 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:11,442 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4010#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:01:11,443 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:11,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:11,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 07:01:11,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907438195] [2022-12-14 07:01:11,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:11,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 07:01:11,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 07:01:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 07:01:11,446 INFO L87 Difference]: Start difference. First operand 161 states and 161 transitions. Second operand has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 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 07:01:11,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:11,568 INFO L93 Difference]: Finished difference Result 352 states and 375 transitions. [2022-12-14 07:01:11,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 07:01:11,569 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-12-14 07:01:11,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:11,571 INFO L225 Difference]: With dead ends: 352 [2022-12-14 07:01:11,571 INFO L226 Difference]: Without dead ends: 351 [2022-12-14 07:01:11,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1151, Invalid=1711, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 07:01:11,573 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 59 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:11,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 261 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:11,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-12-14 07:01:11,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 328. [2022-12-14 07:01:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 326 states have (on average 1.0766871165644172) internal successors, (351), 327 states have internal predecessors, (351), 0 states have call successors, (0), 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 07:01:11,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 351 transitions. [2022-12-14 07:01:11,589 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 351 transitions. Word has length 158 [2022-12-14 07:01:11,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:11,589 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 351 transitions. [2022-12-14 07:01:11,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.723404255319149) internal successors, (316), 47 states have internal predecessors, (316), 0 states have call successors, (0), 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 07:01:11,590 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 351 transitions. [2022-12-14 07:01:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 07:01:11,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:11,592 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 1, 1] [2022-12-14 07:01:11,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 07:01:11,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 07:01:11,794 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:11,795 INFO L85 PathProgramCache]: Analyzing trace with hash -775369118, now seen corresponding path program 4 times [2022-12-14 07:01:11,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:11,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630599152] [2022-12-14 07:01:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:11,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:12,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:12,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630599152] [2022-12-14 07:01:12,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630599152] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:12,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736520934] [2022-12-14 07:01:12,304 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:01:12,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:12,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:12,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:12,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 07:01:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:12,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 07:01:12,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:12,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 1705 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:13,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736520934] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:13,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [179509907] [2022-12-14 07:01:13,056 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:13,056 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:13,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:13,056 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:13,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:13,092 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:13,197 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5786#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:01:13,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:13,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:13,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 07:01:13,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347362156] [2022-12-14 07:01:13,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:13,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 07:01:13,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:13,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 07:01:13,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=1709, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 07:01:13,200 INFO L87 Difference]: Start difference. First operand 328 states and 351 transitions. Second operand has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 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 07:01:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:13,322 INFO L93 Difference]: Finished difference Result 330 states and 353 transitions. [2022-12-14 07:01:13,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 07:01:13,322 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 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 159 [2022-12-14 07:01:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:13,323 INFO L225 Difference]: With dead ends: 330 [2022-12-14 07:01:13,323 INFO L226 Difference]: Without dead ends: 329 [2022-12-14 07:01:13,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1153, Invalid=1709, Unknown=0, NotChecked=0, Total=2862 [2022-12-14 07:01:13,325 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:13,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 243 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-12-14 07:01:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2022-12-14 07:01:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 327 states have (on average 1.0061162079510704) internal successors, (329), 328 states have internal predecessors, (329), 0 states have call successors, (0), 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 07:01:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2022-12-14 07:01:13,341 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 159 [2022-12-14 07:01:13,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:13,342 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2022-12-14 07:01:13,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 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 07:01:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2022-12-14 07:01:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-12-14 07:01:13,347 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:13,347 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 1, 1] [2022-12-14 07:01:13,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 07:01:13,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 07:01:13,549 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:13,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:13,550 INFO L85 PathProgramCache]: Analyzing trace with hash 79390701, now seen corresponding path program 5 times [2022-12-14 07:01:13,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:13,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070186665] [2022-12-14 07:01:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:15,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:15,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:15,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070186665] [2022-12-14 07:01:15,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070186665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:15,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627367430] [2022-12-14 07:01:15,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:01:15,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:15,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:15,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:15,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 07:01:15,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 07:01:15,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 07:01:15,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:15,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 7383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:17,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627367430] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:17,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1877314464] [2022-12-14 07:01:17,155 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:17,155 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:17,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:17,155 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:17,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:17,190 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:17,322 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8591#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:01:17,322 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:17,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:17,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 07:01:17,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840138105] [2022-12-14 07:01:17,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:17,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 07:01:17,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 07:01:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 07:01:17,326 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 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 07:01:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:17,635 INFO L93 Difference]: Finished difference Result 712 states and 759 transitions. [2022-12-14 07:01:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 07:01:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 326 [2022-12-14 07:01:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:17,637 INFO L225 Difference]: With dead ends: 712 [2022-12-14 07:01:17,638 INFO L226 Difference]: Without dead ends: 711 [2022-12-14 07:01:17,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1023 GetRequests, 923 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=4583, Invalid=5719, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 07:01:17,641 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 157 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:17,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 529 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-12-14 07:01:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 664. [2022-12-14 07:01:17,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 662 states have (on average 1.0740181268882176) internal successors, (711), 663 states have internal predecessors, (711), 0 states have call successors, (0), 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 07:01:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2022-12-14 07:01:17,659 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 326 [2022-12-14 07:01:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:17,660 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2022-12-14 07:01:17,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.863157894736842) internal successors, (652), 95 states have internal predecessors, (652), 0 states have call successors, (0), 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 07:01:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2022-12-14 07:01:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-12-14 07:01:17,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:17,665 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 1, 1] [2022-12-14 07:01:17,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 07:01:17,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:17,867 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1833855518, now seen corresponding path program 5 times [2022-12-14 07:01:17,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:17,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036988150] [2022-12-14 07:01:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:17,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:19,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:19,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036988150] [2022-12-14 07:01:19,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036988150] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:19,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70701740] [2022-12-14 07:01:19,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:01:19,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:19,146 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:19,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 07:01:19,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-12-14 07:01:19,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:19,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 07:01:19,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:19,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:19,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:21,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 7429 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:21,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70701740] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:21,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1010052803] [2022-12-14 07:01:21,666 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:21,666 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:21,666 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:21,666 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:21,666 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:21,697 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:21,820 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12215#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:01:21,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:21,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:21,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 07:01:21,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016844602] [2022-12-14 07:01:21,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:21,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 07:01:21,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:21,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 07:01:21,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4585, Invalid=5717, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 07:01:21,826 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 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 07:01:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:22,049 INFO L93 Difference]: Finished difference Result 666 states and 713 transitions. [2022-12-14 07:01:22,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 07:01:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 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 327 [2022-12-14 07:01:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:22,051 INFO L225 Difference]: With dead ends: 666 [2022-12-14 07:01:22,051 INFO L226 Difference]: Without dead ends: 665 [2022-12-14 07:01:22,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 926 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4585, Invalid=5717, Unknown=0, NotChecked=0, Total=10302 [2022-12-14 07:01:22,053 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:22,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 480 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:01:22,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-12-14 07:01:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 665. [2022-12-14 07:01:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 663 states have (on average 1.0030165912518854) internal successors, (665), 664 states have internal predecessors, (665), 0 states have call successors, (0), 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 07:01:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 665 transitions. [2022-12-14 07:01:22,072 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 665 transitions. Word has length 327 [2022-12-14 07:01:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:22,073 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 665 transitions. [2022-12-14 07:01:22,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.88421052631579) internal successors, (654), 95 states have internal predecessors, (654), 0 states have call successors, (0), 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 07:01:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 665 transitions. [2022-12-14 07:01:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 663 [2022-12-14 07:01:22,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:22,078 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 1, 1] [2022-12-14 07:01:22,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 07:01:22,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 07:01:22,280 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:22,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1528006419, now seen corresponding path program 6 times [2022-12-14 07:01:22,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:22,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826127228] [2022-12-14 07:01:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:27,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:27,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826127228] [2022-12-14 07:01:27,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826127228] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:27,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755983482] [2022-12-14 07:01:27,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:01:27,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:27,316 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:27,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 07:01:27,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:01:27,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:27,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 07:01:27,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:27,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:27,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:34,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30879 backedges. 0 proven. 30879 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:34,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755983482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:34,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1656701862] [2022-12-14 07:01:34,685 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:34,685 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:34,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:34,685 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:34,685 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:34,711 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:34,996 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17900#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:01:34,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:34,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:34,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 07:01:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171394264] [2022-12-14 07:01:34,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:34,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 07:01:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:35,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 07:01:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18359, Invalid=20647, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 07:01:35,004 INFO L87 Difference]: Start difference. First operand 665 states and 665 transitions. Second operand has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 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 07:01:36,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:36,797 INFO L93 Difference]: Finished difference Result 1432 states and 1527 transitions. [2022-12-14 07:01:36,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 07:01:36,798 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 662 [2022-12-14 07:01:36,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:36,803 INFO L225 Difference]: With dead ends: 1432 [2022-12-14 07:01:36,803 INFO L226 Difference]: Without dead ends: 1431 [2022-12-14 07:01:36,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2079 GetRequests, 1883 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=18359, Invalid=20647, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 07:01:36,806 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 446 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:36,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 1057 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:01:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-12-14 07:01:36,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1336. [2022-12-14 07:01:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1336 states, 1334 states have (on average 1.0727136431784108) internal successors, (1431), 1335 states have internal predecessors, (1431), 0 states have call successors, (0), 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 07:01:36,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1431 transitions. [2022-12-14 07:01:36,827 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1431 transitions. Word has length 662 [2022-12-14 07:01:36,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:36,828 INFO L495 AbstractCegarLoop]: Abstraction has 1336 states and 1431 transitions. [2022-12-14 07:01:36,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.9319371727748695) internal successors, (1324), 191 states have internal predecessors, (1324), 0 states have call successors, (0), 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 07:01:36,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1431 transitions. [2022-12-14 07:01:36,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 664 [2022-12-14 07:01:36,831 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:36,832 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 94, 94, 1, 1] [2022-12-14 07:01:36,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 07:01:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 07:01:37,032 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:37,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash -123558686, now seen corresponding path program 6 times [2022-12-14 07:01:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:37,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755520172] [2022-12-14 07:01:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:01:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:42,253 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:01:42,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755520172] [2022-12-14 07:01:42,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755520172] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:01:42,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965008585] [2022-12-14 07:01:42,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:01:42,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:01:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:01:42,255 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:01:42,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 07:01:42,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:01:42,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:01:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 07:01:42,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:01:42,914 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:42,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:01:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 30973 backedges. 0 proven. 30973 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:01:49,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965008585] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:01:49,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1617815674] [2022-12-14 07:01:49,791 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:01:49,791 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:01:49,791 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:01:49,791 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:01:49,791 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:01:49,819 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:01:50,067 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '25220#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:01:50,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:01:50,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:01:50,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 07:01:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978768240] [2022-12-14 07:01:50,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:01:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 07:01:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:01:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 07:01:50,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18361, Invalid=20645, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 07:01:50,077 INFO L87 Difference]: Start difference. First operand 1336 states and 1431 transitions. Second operand has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 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 07:01:51,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:01:51,189 INFO L93 Difference]: Finished difference Result 1338 states and 1433 transitions. [2022-12-14 07:01:51,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 07:01:51,190 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 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 663 [2022-12-14 07:01:51,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:01:51,194 INFO L225 Difference]: With dead ends: 1338 [2022-12-14 07:01:51,194 INFO L226 Difference]: Without dead ends: 1337 [2022-12-14 07:01:51,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2082 GetRequests, 1886 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=18361, Invalid=20645, Unknown=0, NotChecked=0, Total=39006 [2022-12-14 07:01:51,197 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:01:51,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 965 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:01:51,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-12-14 07:01:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-12-14 07:01:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1335 states have (on average 1.0014981273408239) internal successors, (1337), 1336 states have internal predecessors, (1337), 0 states have call successors, (0), 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 07:01:51,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1337 transitions. [2022-12-14 07:01:51,233 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1337 transitions. Word has length 663 [2022-12-14 07:01:51,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:01:51,234 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1337 transitions. [2022-12-14 07:01:51,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.942408376963351) internal successors, (1326), 191 states have internal predecessors, (1326), 0 states have call successors, (0), 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 07:01:51,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1337 transitions. [2022-12-14 07:01:51,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1335 [2022-12-14 07:01:51,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:01:51,246 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 190, 190, 1, 1] [2022-12-14 07:01:51,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 07:01:51,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 07:01:51,447 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:01:51,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:01:51,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1961846035, now seen corresponding path program 7 times [2022-12-14 07:01:51,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:01:51,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163906314] [2022-12-14 07:01:51,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:01:51,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:01:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:02:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:02:17,593 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:02:17,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163906314] [2022-12-14 07:02:17,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163906314] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:02:17,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183550953] [2022-12-14 07:02:17,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:02:17,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:02:17,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:02:17,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:02:17,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 07:02:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:02:17,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 07:02:17,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:02:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:02:18,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:02:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 126255 backedges. 0 proven. 126255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:02:47,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183550953] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:02:47,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1900959587] [2022-12-14 07:02:47,320 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:02:47,320 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:02:47,320 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:02:47,321 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:02:47,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:02:47,354 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:02:47,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '36665#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:02:47,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:02:47,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:02:47,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 07:02:47,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157726952] [2022-12-14 07:02:47,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:02:47,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 07:02:47,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:02:47,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 07:02:47,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73559, Invalid=78151, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 07:02:47,814 INFO L87 Difference]: Start difference. First operand 1337 states and 1337 transitions. Second operand has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 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 07:03:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:03:01,533 INFO L93 Difference]: Finished difference Result 2872 states and 3063 transitions. [2022-12-14 07:03:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 07:03:01,533 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 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 1334 [2022-12-14 07:03:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:03:01,538 INFO L225 Difference]: With dead ends: 2872 [2022-12-14 07:03:01,538 INFO L226 Difference]: Without dead ends: 2871 [2022-12-14 07:03:01,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4191 GetRequests, 3803 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=73559, Invalid=78151, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 07:03:01,545 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1012 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:03:01,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2112 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 07:03:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2022-12-14 07:03:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2680. [2022-12-14 07:03:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2680 states, 2678 states have (on average 1.072068707991038) internal successors, (2871), 2679 states have internal predecessors, (2871), 0 states have call successors, (0), 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 07:03:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 2871 transitions. [2022-12-14 07:03:01,601 INFO L78 Accepts]: Start accepts. Automaton has 2680 states and 2871 transitions. Word has length 1334 [2022-12-14 07:03:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:03:01,601 INFO L495 AbstractCegarLoop]: Abstraction has 2680 states and 2871 transitions. [2022-12-14 07:03:01,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.966057441253263) internal successors, (2668), 383 states have internal predecessors, (2668), 0 states have call successors, (0), 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 07:03:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2680 states and 2871 transitions. [2022-12-14 07:03:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1336 [2022-12-14 07:03:01,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:03:01,611 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 190, 190, 1, 1] [2022-12-14 07:03:01,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 07:03:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:01,811 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:03:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:03:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -687684894, now seen corresponding path program 7 times [2022-12-14 07:03:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:03:01,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606049384] [2022-12-14 07:03:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:03:01,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:03:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:03:28,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:03:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606049384] [2022-12-14 07:03:28,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606049384] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:03:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412106761] [2022-12-14 07:03:28,329 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:03:28,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:03:28,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:03:28,330 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:03:28,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 07:03:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:03:28,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 07:03:28,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:03:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:03:29,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:04:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 126445 backedges. 0 proven. 126445 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:04:00,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412106761] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:04:00,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [575385254] [2022-12-14 07:04:00,628 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:04:00,628 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:04:00,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:04:00,628 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:04:00,629 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:04:00,652 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:04:01,102 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '51377#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< (+ 2147483647 |ULTIMATE.start_main_~y~0#1|) 0) (<= 13 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-12-14 07:04:01,102 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:04:01,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:04:01,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 07:04:01,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382276964] [2022-12-14 07:04:01,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:04:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 07:04:01,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:04:01,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 07:04:01,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73561, Invalid=78149, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 07:04:01,121 INFO L87 Difference]: Start difference. First operand 2680 states and 2871 transitions. Second operand has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 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 07:04:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:04:09,977 INFO L93 Difference]: Finished difference Result 2682 states and 2873 transitions. [2022-12-14 07:04:09,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 07:04:09,979 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 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 1335 [2022-12-14 07:04:09,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:04:09,983 INFO L225 Difference]: With dead ends: 2682 [2022-12-14 07:04:09,983 INFO L226 Difference]: Without dead ends: 2681 [2022-12-14 07:04:09,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4194 GetRequests, 3806 SyntacticMatches, 0 SemanticMatches, 388 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3432 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=73561, Invalid=78149, Unknown=0, NotChecked=0, Total=151710 [2022-12-14 07:04:09,990 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:04:09,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1923 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 07:04:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2022-12-14 07:04:10,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2681. [2022-12-14 07:04:10,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2679 states have (on average 1.0007465472191117) internal successors, (2681), 2680 states have internal predecessors, (2681), 0 states have call successors, (0), 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 07:04:10,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 2681 transitions. [2022-12-14 07:04:10,029 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 2681 transitions. Word has length 1335 [2022-12-14 07:04:10,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:04:10,030 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 2681 transitions. [2022-12-14 07:04:10,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.971279373368146) internal successors, (2670), 383 states have internal predecessors, (2670), 0 states have call successors, (0), 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 07:04:10,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 2681 transitions. [2022-12-14 07:04:10,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2679 [2022-12-14 07:04:10,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:04:10,060 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 382, 382, 382, 1, 1] [2022-12-14 07:04:10,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 07:04:10,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:04:10,261 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:04:10,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:04:10,261 INFO L85 PathProgramCache]: Analyzing trace with hash -564076819, now seen corresponding path program 8 times [2022-12-14 07:04:10,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:04:10,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63255973] [2022-12-14 07:04:10,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:04:10,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:04:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:06:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:06:49,187 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:06:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63255973] [2022-12-14 07:06:49,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63255973] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:06:49,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975799477] [2022-12-14 07:06:49,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:06:49,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:06:49,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:06:49,189 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:06:49,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 07:06:53,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 07:06:53,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:06:53,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 4977 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 07:06:53,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:06:55,853 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:06:55,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:08:42,381 INFO L134 CoverageAnalysis]: Checked inductivity of 510543 backedges. 0 proven. 510543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:08:42,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975799477] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:08:42,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [897576074] [2022-12-14 07:08:42,383 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:08:42,383 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:08:42,383 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:08:42,383 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:08:42,383 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:08:42,406 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:08:43,261 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '74342#(and (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (< 0 |ULTIMATE.start_main_~z~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 0))' at error location [2022-12-14 07:08:43,261 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:08:43,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:08:43,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-12-14 07:08:43,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912320780] [2022-12-14 07:08:43,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:08:43,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 07:08:43,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:08:43,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 07:08:43,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294551, Invalid=303751, Unknown=0, NotChecked=0, Total=598302 [2022-12-14 07:08:43,329 INFO L87 Difference]: Start difference. First operand 2681 states and 2681 transitions. Second operand has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 0 states have call successors, (0), 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 07:10:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:10:28,059 INFO L93 Difference]: Finished difference Result 5752 states and 6135 transitions. [2022-12-14 07:10:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-12-14 07:10:28,062 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 0 states have call successors, (0), 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 2678 [2022-12-14 07:10:28,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:10:28,090 INFO L225 Difference]: With dead ends: 5752 [2022-12-14 07:10:28,090 INFO L226 Difference]: Without dead ends: 5751 [2022-12-14 07:10:28,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8415 GetRequests, 7643 SyntacticMatches, 0 SemanticMatches, 772 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6888 ImplicationChecksByTransitivity, 140.4s TimeCoverageRelationStatistics Valid=294551, Invalid=303751, Unknown=0, NotChecked=0, Total=598302 [2022-12-14 07:10:28,122 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1968 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 1542 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 4228 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:10:28,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 4228 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1542 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 07:10:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5751 states. [2022-12-14 07:10:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5751 to 5368. [2022-12-14 07:10:28,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5366 states have (on average 1.0717480432351845) internal successors, (5751), 5367 states have internal predecessors, (5751), 0 states have call successors, (0), 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 07:10:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 5751 transitions. [2022-12-14 07:10:28,254 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 5751 transitions. Word has length 2678 [2022-12-14 07:10:28,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:10:28,256 INFO L495 AbstractCegarLoop]: Abstraction has 5368 states and 5751 transitions. [2022-12-14 07:10:28,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 6.983050847457627) internal successors, (5356), 767 states have internal predecessors, (5356), 0 states have call successors, (0), 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 07:10:28,257 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 5751 transitions. [2022-12-14 07:10:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2680 [2022-12-14 07:10:28,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:10:28,294 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 382, 382, 1, 1] [2022-12-14 07:10:28,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 07:10:28,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:10:28,495 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:10:28,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:10:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash -306512158, now seen corresponding path program 8 times [2022-12-14 07:10:28,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:10:28,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585267130] [2022-12-14 07:10:28,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:10:28,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:10:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:13:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 510925 backedges. 0 proven. 510925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:13:09,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:13:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585267130] [2022-12-14 07:13:09,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585267130] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:13:09,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219284425] [2022-12-14 07:13:09,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:13:09,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:13:09,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:13:09,509 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:13:09,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ccf1c10-cb28-4300-a643-49ab12134f72/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 07:13:13,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-12-14 07:13:13,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:13:13,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 4980 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 07:13:13,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:13:16,458 INFO L134 CoverageAnalysis]: Checked inductivity of 510925 backedges. 0 proven. 510925 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:13:16,458 INFO L328 TraceCheckSpWp]: Computing backward predicates...