./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/LogAG.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/LogAG.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba --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 68bdf78f6f996480ccfcf11b22cc3b7892db15596cae3edf06123d71c4506b1f --- 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-b5237d8 [2022-11-22 00:28:27,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:28:27,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:28:27,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:28:27,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:28:27,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:28:27,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:28:27,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:28:27,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:28:27,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:28:27,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:28:28,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:28:28,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:28:28,002 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:28:28,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:28:28,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:28:28,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:28:28,007 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:28:28,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:28:28,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:28:28,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:28:28,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:28:28,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:28:28,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:28:28,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:28:28,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:28:28,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:28:28,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:28:28,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:28:28,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:28:28,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:28:28,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:28:28,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:28:28,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:28:28,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:28:28,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:28:28,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:28:28,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:28:28,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:28:28,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:28:28,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:28:28,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 00:28:28,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:28:28,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:28:28,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:28:28,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:28:28,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:28:28,089 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:28:28,089 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:28:28,089 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:28:28,090 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:28:28,090 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:28:28,090 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:28:28,091 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:28:28,091 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:28:28,092 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:28:28,092 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:28:28,092 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:28:28,093 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:28:28,093 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:28:28,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:28:28,094 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:28:28,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:28:28,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:28:28,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 00:28:28,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:28:28,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 00:28:28,097 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 00:28:28,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 00:28:28,098 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:28:28,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 00:28:28,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:28:28,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:28:28,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:28:28,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:28:28,100 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:28:28,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:28:28,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 00:28:28,101 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:28:28,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:28:28,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 00:28:28,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:28:28,102 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_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68bdf78f6f996480ccfcf11b22cc3b7892db15596cae3edf06123d71c4506b1f [2022-11-22 00:28:28,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:28:28,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:28:28,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:28:28,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:28:28,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:28:28,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-restricted-15/LogAG.c [2022-11-22 00:28:31,897 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:28:32,211 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:28:32,212 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/sv-benchmarks/c/termination-restricted-15/LogAG.c [2022-11-22 00:28:32,219 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/data/98ec8190a/ab645e94ff024a149f9890875bd7fc2d/FLAGab4ab2d7f [2022-11-22 00:28:32,236 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/data/98ec8190a/ab645e94ff024a149f9890875bd7fc2d [2022-11-22 00:28:32,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:28:32,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:28:32,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:28:32,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:28:32,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:28:32,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c9f62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32, skipping insertion in model container [2022-11-22 00:28:32,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:28:32,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:28:32,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:28:32,467 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:28:32,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:28:32,497 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:28:32,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32 WrapperNode [2022-11-22 00:28:32,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:28:32,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:28:32,500 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:28:32,500 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:28:32,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,514 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,532 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-22 00:28:32,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:28:32,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:28:32,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:28:32,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:28:32,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,555 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:28:32,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:28:32,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:28:32,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:28:32,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (1/1) ... [2022-11-22 00:28:32,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:28:32,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:32,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:28:32,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:28:32,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:28:32,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:28:32,746 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:28:32,748 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:28:32,880 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:28:32,904 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:28:32,904 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 00:28:32,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:32 BoogieIcfgContainer [2022-11-22 00:28:32,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:28:32,911 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:28:32,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:28:32,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:28:32,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:28:32" (1/3) ... [2022-11-22 00:28:32,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2612e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:28:32, skipping insertion in model container [2022-11-22 00:28:32,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:28:32" (2/3) ... [2022-11-22 00:28:32,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2612e84b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:28:32, skipping insertion in model container [2022-11-22 00:28:32,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:28:32" (3/3) ... [2022-11-22 00:28:32,922 INFO L112 eAbstractionObserver]: Analyzing ICFG LogAG.c [2022-11-22 00:28:32,954 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:28:32,954 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-22 00:28:33,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:28:33,114 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;@6cdc1629, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:28:33,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-22 00:28:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 00:28:33,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:33,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 00:28:33,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:33,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:33,133 INFO L85 PathProgramCache]: Analyzing trace with hash 80116, now seen corresponding path program 1 times [2022-11-22 00:28:33,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:33,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328334594] [2022-11-22 00:28:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:33,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:33,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:33,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328334594] [2022-11-22 00:28:33,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328334594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:33,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:33,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:28:33,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644842465] [2022-11-22 00:28:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:33,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:33,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:33,404 INFO L87 Difference]: Start difference. First operand has 24 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 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) [2022-11-22 00:28:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:33,464 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-11-22 00:28:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:33,468 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 [2022-11-22 00:28:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:33,478 INFO L225 Difference]: With dead ends: 41 [2022-11-22 00:28:33,479 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 00:28:33,483 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 [2022-11-22 00:28:33,487 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:33,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 34 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:33,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 00:28:33,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 25. [2022-11-22 00:28:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-11-22 00:28:33,548 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 3 [2022-11-22 00:28:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:33,549 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-11-22 00:28:33,549 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) [2022-11-22 00:28:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-11-22 00:28:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 00:28:33,553 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:33,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 00:28:33,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:28:33,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2483641, now seen corresponding path program 1 times [2022-11-22 00:28:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:33,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765562548] [2022-11-22 00:28:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:33,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:33,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:33,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:33,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:33,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765562548] [2022-11-22 00:28:33,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765562548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:33,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:33,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:28:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707268610] [2022-11-22 00:28:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:33,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:33,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:33,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:33,653 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:33,679 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-22 00:28:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:33,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 00:28:33,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:33,681 INFO L225 Difference]: With dead ends: 25 [2022-11-22 00:28:33,681 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 00:28:33,682 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 [2022-11-22 00:28:33,684 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:33,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 00:28:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 00:28:33,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:33,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-22 00:28:33,690 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 4 [2022-11-22 00:28:33,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:33,691 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-22 00:28:33,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:33,691 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-22 00:28:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:28:33,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:33,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:28:33,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:28:33,693 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:33,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1908185624, now seen corresponding path program 1 times [2022-11-22 00:28:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:33,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967748481] [2022-11-22 00:28:33,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:33,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:33,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967748481] [2022-11-22 00:28:33,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967748481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:33,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:33,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:28:33,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438275442] [2022-11-22 00:28:33,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:33,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:33,763 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-22 00:28:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:33,820 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-11-22 00:28:33,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:33,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2022-11-22 00:28:33,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:33,823 INFO L225 Difference]: With dead ends: 25 [2022-11-22 00:28:33,825 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 00:28:33,826 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 [2022-11-22 00:28:33,828 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:33,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 00:28:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-11-22 00:28:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 22 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) [2022-11-22 00:28:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-22 00:28:33,844 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 6 [2022-11-22 00:28:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:33,845 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-22 00:28:33,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2022-11-22 00:28:33,846 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-22 00:28:33,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 00:28:33,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:33,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 00:28:33,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:28:33,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:33,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:33,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1908186565, now seen corresponding path program 1 times [2022-11-22 00:28:33,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:33,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744824094] [2022-11-22 00:28:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:33,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:33,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744824094] [2022-11-22 00:28:33,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744824094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:33,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:33,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:28:33,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600112108] [2022-11-22 00:28:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:33,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:33,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:33,909 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-22 00:28:33,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:33,982 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-22 00:28:33,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:33,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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 [2022-11-22 00:28:33,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:33,986 INFO L225 Difference]: With dead ends: 24 [2022-11-22 00:28:33,987 INFO L226 Difference]: Without dead ends: 22 [2022-11-22 00:28:33,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:28:33,991 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:33,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 8 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:28:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-22 00:28:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-11-22 00:28:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-22 00:28:34,003 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 6 [2022-11-22 00:28:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,003 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-22 00:28:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-22 00:28:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-22 00:28:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 00:28:34,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,005 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:28:34,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,009 INFO L85 PathProgramCache]: Analyzing trace with hash 975787869, now seen corresponding path program 1 times [2022-11-22 00:28:34,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764406127] [2022-11-22 00:28:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764406127] [2022-11-22 00:28:34,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764406127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:34,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:34,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:34,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313193827] [2022-11-22 00:28:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:34,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:34,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:34,082 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-11-22 00:28:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:34,157 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2022-11-22 00:28:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:28:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2022-11-22 00:28:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:34,160 INFO L225 Difference]: With dead ends: 30 [2022-11-22 00:28:34,160 INFO L226 Difference]: Without dead ends: 28 [2022-11-22 00:28:34,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:28:34,167 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:34,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 24 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:28:34,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-22 00:28:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2022-11-22 00:28:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-22 00:28:34,174 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-11-22 00:28:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,174 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-22 00:28:34,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-11-22 00:28:34,175 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-22 00:28:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:28:34,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:28:34,176 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash 184652938, now seen corresponding path program 1 times [2022-11-22 00:28:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045306371] [2022-11-22 00:28:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045306371] [2022-11-22 00:28:34,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045306371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:34,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:34,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:28:34,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737607411] [2022-11-22 00:28:34,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:34,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:34,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:34,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:34,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:34,291 INFO L87 Difference]: Start difference. First operand 21 states and 23 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) [2022-11-22 00:28:34,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:34,331 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-22 00:28:34,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:34,331 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 [2022-11-22 00:28:34,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:34,334 INFO L225 Difference]: With dead ends: 40 [2022-11-22 00:28:34,334 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 00:28:34,335 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 [2022-11-22 00:28:34,336 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 00:28:34,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-22 00:28:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.4) internal successors, (42), 34 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-11-22 00:28:34,355 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 8 [2022-11-22 00:28:34,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,356 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-11-22 00:28:34,356 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) [2022-11-22 00:28:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-11-22 00:28:34,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 00:28:34,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 00:28:34,358 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash 183748285, now seen corresponding path program 1 times [2022-11-22 00:28:34,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261074204] [2022-11-22 00:28:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261074204] [2022-11-22 00:28:34,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261074204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:34,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:34,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:28:34,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054849042] [2022-11-22 00:28:34,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:34,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:34,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:34,433 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:34,477 INFO L93 Difference]: Finished difference Result 52 states and 62 transitions. [2022-11-22 00:28:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:34,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-22 00:28:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:34,488 INFO L225 Difference]: With dead ends: 52 [2022-11-22 00:28:34,489 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 00:28:34,489 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 [2022-11-22 00:28:34,490 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 11 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:34,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:34,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 00:28:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2022-11-22 00:28:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-22 00:28:34,501 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 8 [2022-11-22 00:28:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,501 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-22 00:28:34,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-22 00:28:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:28:34,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 00:28:34,508 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1429273855, now seen corresponding path program 1 times [2022-11-22 00:28:34,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893016419] [2022-11-22 00:28:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893016419] [2022-11-22 00:28:34,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893016419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:34,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:34,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 00:28:34,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981645421] [2022-11-22 00:28:34,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:34,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:34,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:34,580 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:34,594 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-22 00:28:34,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:34,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 00:28:34,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:34,596 INFO L225 Difference]: With dead ends: 41 [2022-11-22 00:28:34,596 INFO L226 Difference]: Without dead ends: 40 [2022-11-22 00:28:34,596 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 [2022-11-22 00:28:34,597 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 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 [2022-11-22 00:28:34,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:34,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-22 00:28:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-11-22 00:28:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3055555555555556) internal successors, (47), 39 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-11-22 00:28:34,607 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 9 [2022-11-22 00:28:34,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,607 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-11-22 00:28:34,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-11-22 00:28:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 00:28:34,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 00:28:34,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1401229601, now seen corresponding path program 1 times [2022-11-22 00:28:34,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967256561] [2022-11-22 00:28:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967256561] [2022-11-22 00:28:34,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967256561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:34,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:34,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:28:34,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670934636] [2022-11-22 00:28:34,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:34,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:28:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:34,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:28:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:28:34,709 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:34,752 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-11-22 00:28:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:28:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 00:28:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:34,753 INFO L225 Difference]: With dead ends: 40 [2022-11-22 00:28:34,753 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 00:28:34,754 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 [2022-11-22 00:28:34,755 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 10 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:34,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 00:28:34,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 00:28:34,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.25) internal successors, (45), 38 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-11-22 00:28:34,763 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 9 [2022-11-22 00:28:34,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,764 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-11-22 00:28:34,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-11-22 00:28:34,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 00:28:34,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 00:28:34,766 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1243976437, now seen corresponding path program 1 times [2022-11-22 00:28:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246095822] [2022-11-22 00:28:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246095822] [2022-11-22 00:28:34,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246095822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:34,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:28:34,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:28:34,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741953556] [2022-11-22 00:28:34,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:34,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:28:34,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:28:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:34,865 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:34,901 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-22 00:28:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:28:34,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 [2022-11-22 00:28:34,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:34,903 INFO L225 Difference]: With dead ends: 46 [2022-11-22 00:28:34,903 INFO L226 Difference]: Without dead ends: 45 [2022-11-22 00:28:34,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:28:34,905 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:34,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-22 00:28:34,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34. [2022-11-22 00:28:34,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-22 00:28:34,914 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 12 [2022-11-22 00:28:34,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:34,914 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-22 00:28:34,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:34,915 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-22 00:28:34,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 00:28:34,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:34,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:34,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 00:28:34,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:34,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:34,917 INFO L85 PathProgramCache]: Analyzing trace with hash -92340699, now seen corresponding path program 1 times [2022-11-22 00:28:34,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:34,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413755141] [2022-11-22 00:28:34,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:34,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:34,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:34,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413755141] [2022-11-22 00:28:34,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413755141] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:34,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421230134] [2022-11-22 00:28:34,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:34,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:34,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:34,969 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:34,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:28:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:35,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:28:35,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:35,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:35,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:35,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421230134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:35,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [573697788] [2022-11-22 00:28:35,217 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:28:35,219 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:35,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:35,240 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:35,241 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:35,622 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:36,099 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '900#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:28:36,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:28:36,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:28:36,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 00:28:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787111279] [2022-11-22 00:28:36,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:28:36,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:28:36,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:36,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:28:36,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:28:36,102 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:36,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:36,152 INFO L93 Difference]: Finished difference Result 109 states and 125 transitions. [2022-11-22 00:28:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:28:36,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-22 00:28:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:36,154 INFO L225 Difference]: With dead ends: 109 [2022-11-22 00:28:36,156 INFO L226 Difference]: Without dead ends: 108 [2022-11-22 00:28:36,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:28:36,159 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:36,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 55 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:36,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-22 00:28:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 64. [2022-11-22 00:28:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 63 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2022-11-22 00:28:36,182 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 13 [2022-11-22 00:28:36,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:36,182 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2022-11-22 00:28:36,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:36,183 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2022-11-22 00:28:36,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-22 00:28:36,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:36,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-22 00:28:36,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:36,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:36,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:36,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1529375549, now seen corresponding path program 1 times [2022-11-22 00:28:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:36,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155650010] [2022-11-22 00:28:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:36,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:36,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:36,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155650010] [2022-11-22 00:28:36,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155650010] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216555715] [2022-11-22 00:28:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:36,438 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:36,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:28:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:28:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:36,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:36,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:36,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216555715] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:36,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698999651] [2022-11-22 00:28:36,577 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:28:36,577 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:36,577 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:36,578 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:36,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:36,814 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:37,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1698999651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:37,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:28:37,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [2, 2, 2] total 10 [2022-11-22 00:28:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61955168] [2022-11-22 00:28:37,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:28:37,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:28:37,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:28:37,198 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:37,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:37,385 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2022-11-22 00:28:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:28:37,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-22 00:28:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:37,387 INFO L225 Difference]: With dead ends: 102 [2022-11-22 00:28:37,387 INFO L226 Difference]: Without dead ends: 101 [2022-11-22 00:28:37,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-22 00:28:37,388 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:37,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 16 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:28:37,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-22 00:28:37,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2022-11-22 00:28:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2) internal successors, (84), 71 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:37,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 84 transitions. [2022-11-22 00:28:37,401 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 84 transitions. Word has length 16 [2022-11-22 00:28:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:37,402 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 84 transitions. [2022-11-22 00:28:37,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 84 transitions. [2022-11-22 00:28:37,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:28:37,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:37,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:37,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 00:28:37,609 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash 816786719, now seen corresponding path program 1 times [2022-11-22 00:28:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520314065] [2022-11-22 00:28:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:28:37,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:37,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520314065] [2022-11-22 00:28:37,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520314065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:37,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404032320] [2022-11-22 00:28:37,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:37,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:37,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:37,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:37,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:28:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:37,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 00:28:37,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:37,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:28:37,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:28:37,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404032320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [693450032] [2022-11-22 00:28:37,817 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-22 00:28:37,817 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:37,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:37,818 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:37,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:38,373 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:39,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1544#(and (<= |ULTIMATE.start_main_~xtmp~0#1| 1) (not (<= |ULTIMATE.start_main_~res~0#1| 2147483646)) (= (+ |ULTIMATE.start_main_~xtmp~0#1| 1) |ULTIMATE.start_main_~x~0#1|) (or (and (<= |ULTIMATE.start_main_~restmp~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= 1 |ULTIMATE.start_main_~restmp~0#1|)) (and (= |ULTIMATE.start_main_~restmp~0#1| 0) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)))))' at error location [2022-11-22 00:28:39,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:28:39,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:28:39,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-22 00:28:39,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827526623] [2022-11-22 00:28:39,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:28:39,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:28:39,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:39,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:28:39,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:28:39,023 INFO L87 Difference]: Start difference. First operand 72 states and 84 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:39,084 INFO L93 Difference]: Finished difference Result 197 states and 228 transitions. [2022-11-22 00:28:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:28:39,085 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 00:28:39,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:39,086 INFO L225 Difference]: With dead ends: 197 [2022-11-22 00:28:39,086 INFO L226 Difference]: Without dead ends: 196 [2022-11-22 00:28:39,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:28:39,090 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:39,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 56 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:39,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-22 00:28:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 189. [2022-11-22 00:28:39,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 187 states have (on average 1.1871657754010696) internal successors, (222), 188 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:39,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 222 transitions. [2022-11-22 00:28:39,142 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 222 transitions. Word has length 21 [2022-11-22 00:28:39,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:39,143 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 222 transitions. [2022-11-22 00:28:39,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 222 transitions. [2022-11-22 00:28:39,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 00:28:39,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:39,146 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-11-22 00:28:39,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 00:28:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 00:28:39,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:39,354 INFO L85 PathProgramCache]: Analyzing trace with hash 368265405, now seen corresponding path program 2 times [2022-11-22 00:28:39,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:39,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837920406] [2022-11-22 00:28:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:39,494 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:39,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837920406] [2022-11-22 00:28:39,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837920406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:39,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103041474] [2022-11-22 00:28:39,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:28:39,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:39,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:39,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:39,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:28:39,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 00:28:39,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:28:39,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 00:28:39,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:39,602 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:39,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:39,702 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:39,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103041474] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:39,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1671155707] [2022-11-22 00:28:39,705 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:28:39,705 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:39,706 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:39,706 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:39,706 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:39,824 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:40,307 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2191#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:28:40,307 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:28:40,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:28:40,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-22 00:28:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303181811] [2022-11-22 00:28:40,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:28:40,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:28:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:28:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:28:40,309 INFO L87 Difference]: Start difference. First operand 189 states and 222 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:40,431 INFO L93 Difference]: Finished difference Result 653 states and 745 transitions. [2022-11-22 00:28:40,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 00:28:40,431 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 28 [2022-11-22 00:28:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:40,440 INFO L225 Difference]: With dead ends: 653 [2022-11-22 00:28:40,440 INFO L226 Difference]: Without dead ends: 652 [2022-11-22 00:28:40,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:28:40,442 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 151 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:40,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 124 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:28:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-22 00:28:40,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 339. [2022-11-22 00:28:40,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 337 states have (on average 1.1928783382789319) internal successors, (402), 338 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:40,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 402 transitions. [2022-11-22 00:28:40,482 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 402 transitions. Word has length 28 [2022-11-22 00:28:40,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:40,482 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 402 transitions. [2022-11-22 00:28:40,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:40,483 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 402 transitions. [2022-11-22 00:28:40,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 00:28:40,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:40,493 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:40,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:40,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:40,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:40,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1506894502, now seen corresponding path program 2 times [2022-11-22 00:28:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:40,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455906838] [2022-11-22 00:28:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:40,807 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:28:40,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455906838] [2022-11-22 00:28:40,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455906838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:40,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940323521] [2022-11-22 00:28:40,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:28:40,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:40,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:40,810 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:40,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:28:40,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 00:28:40,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:28:40,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 00:28:40,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-22 00:28:40,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:40,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940323521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:40,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:40,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-11-22 00:28:40,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783614515] [2022-11-22 00:28:40,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:40,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:28:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:40,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:28:40,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 00:28:40,920 INFO L87 Difference]: Start difference. First operand 339 states and 402 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:40,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:40,984 INFO L93 Difference]: Finished difference Result 368 states and 433 transitions. [2022-11-22 00:28:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:28:40,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-22 00:28:40,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:40,986 INFO L225 Difference]: With dead ends: 368 [2022-11-22 00:28:40,986 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 00:28:40,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-11-22 00:28:40,988 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:40,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 27 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:40,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 00:28:40,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-22 00:28:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 94 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-22 00:28:40,997 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 45 [2022-11-22 00:28:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:40,998 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-22 00:28:40,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:40,998 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-22 00:28:40,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 00:28:40,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:40,999 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:28:41,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:41,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 00:28:41,205 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:41,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:41,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1185794882, now seen corresponding path program 3 times [2022-11-22 00:28:41,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:41,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246992103] [2022-11-22 00:28:41,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:41,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:28:41,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:41,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246992103] [2022-11-22 00:28:41,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246992103] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:41,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785518475] [2022-11-22 00:28:41,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:28:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:41,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:41,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:28:41,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:28:41,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:28:41,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:28:41,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 00:28:41,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:28:41,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785518475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:28:41,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:28:41,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 11 [2022-11-22 00:28:41,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128918387] [2022-11-22 00:28:41,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:28:41,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:28:41,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:41,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:28:41,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-22 00:28:41,489 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:41,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:41,563 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2022-11-22 00:28:41,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:28:41,563 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 45 [2022-11-22 00:28:41,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:41,564 INFO L225 Difference]: With dead ends: 95 [2022-11-22 00:28:41,564 INFO L226 Difference]: Without dead ends: 59 [2022-11-22 00:28:41,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-22 00:28:41,566 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 11 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:41,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 39 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:28:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-22 00:28:41,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-22 00:28:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0172413793103448) internal successors, (59), 58 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2022-11-22 00:28:41,572 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 45 [2022-11-22 00:28:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:41,572 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2022-11-22 00:28:41,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2022-11-22 00:28:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-22 00:28:41,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:41,574 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2022-11-22 00:28:41,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-22 00:28:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:28:41,780 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:41,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1991562307, now seen corresponding path program 3 times [2022-11-22 00:28:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:41,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243552984] [2022-11-22 00:28:41,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:41,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:42,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:42,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243552984] [2022-11-22 00:28:42,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243552984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:42,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159386957] [2022-11-22 00:28:42,042 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:28:42,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:42,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:42,044 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:42,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:28:42,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:28:42,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:28:42,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 00:28:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:42,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:42,537 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:42,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159386957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:42,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1857387353] [2022-11-22 00:28:42,539 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:28:42,540 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:42,540 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:42,540 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:42,540 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:42,622 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:43,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4772#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:28:43,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:28:43,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:28:43,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-22 00:28:43,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445852477] [2022-11-22 00:28:43,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:28:43,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 00:28:43,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:43,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 00:28:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:28:43,408 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:43,509 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2022-11-22 00:28:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 00:28:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 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 58 [2022-11-22 00:28:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:43,514 INFO L225 Difference]: With dead ends: 120 [2022-11-22 00:28:43,514 INFO L226 Difference]: Without dead ends: 119 [2022-11-22 00:28:43,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 144 SyntacticMatches, 11 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=305, Invalid=625, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:28:43,516 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:43,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 81 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:28:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-22 00:28:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-11-22 00:28:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0084745762711864) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:43,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2022-11-22 00:28:43,526 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 58 [2022-11-22 00:28:43,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:43,526 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2022-11-22 00:28:43,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:43,527 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2022-11-22 00:28:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-22 00:28:43,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:43,529 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2022-11-22 00:28:43,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:43,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-22 00:28:43,739 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1913277, now seen corresponding path program 4 times [2022-11-22 00:28:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:43,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570134088] [2022-11-22 00:28:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:44,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:44,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570134088] [2022-11-22 00:28:44,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570134088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:44,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671532252] [2022-11-22 00:28:44,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:28:44,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:44,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:44,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:44,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:28:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:44,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 00:28:44,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:44,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:44,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:46,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671532252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:46,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658168255] [2022-11-22 00:28:46,114 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:28:46,114 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:46,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:46,115 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:46,115 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:46,225 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:47,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5816#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:28:47,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:28:47,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:28:47,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-22 00:28:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839718064] [2022-11-22 00:28:47,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:28:47,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 00:28:47,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:28:47,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 00:28:47,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1157, Invalid=1813, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 00:28:47,770 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:48,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:28:48,009 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2022-11-22 00:28:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 00:28:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 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 118 [2022-11-22 00:28:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:28:48,012 INFO L225 Difference]: With dead ends: 240 [2022-11-22 00:28:48,012 INFO L226 Difference]: Without dead ends: 239 [2022-11-22 00:28:48,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 300 SyntacticMatches, 23 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2108 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1157, Invalid=1813, Unknown=0, NotChecked=0, Total=2970 [2022-11-22 00:28:48,015 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:28:48,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 159 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:28:48,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-22 00:28:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-11-22 00:28:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.004201680672269) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:48,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2022-11-22 00:28:48,029 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 118 [2022-11-22 00:28:48,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:28:48,031 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2022-11-22 00:28:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.957446808510638) internal successors, (233), 48 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:28:48,032 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2022-11-22 00:28:48,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-11-22 00:28:48,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:28:48,042 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2022-11-22 00:28:48,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 00:28:48,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-22 00:28:48,249 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:28:48,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:28:48,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1871330749, now seen corresponding path program 5 times [2022-11-22 00:28:48,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:28:48,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635779659] [2022-11-22 00:28:48,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:28:48,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:28:48,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:28:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:51,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:28:51,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635779659] [2022-11-22 00:28:51,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635779659] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:28:51,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131867373] [2022-11-22 00:28:51,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:28:51,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:28:51,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:28:51,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:28:51,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:28:51,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 00:28:51,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:28:51,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 00:28:51,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:28:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:52,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:28:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:28:56,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131867373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:28:56,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602417685] [2022-11-22 00:28:56,436 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:28:56,437 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:28:56,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:28:56,437 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:28:56,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:28:56,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:29:00,827 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7916#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:29:00,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:29:00,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:29:00,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-22 00:29:00,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73140770] [2022-11-22 00:29:00,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:29:00,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 00:29:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:00,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 00:29:00,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4589, Invalid=5917, Unknown=0, NotChecked=0, Total=10506 [2022-11-22 00:29:00,836 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:29:01,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:01,425 INFO L93 Difference]: Finished difference Result 480 states and 527 transitions. [2022-11-22 00:29:01,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 00:29:01,426 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 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 238 [2022-11-22 00:29:01,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:01,429 INFO L225 Difference]: With dead ends: 480 [2022-11-22 00:29:01,429 INFO L226 Difference]: Without dead ends: 479 [2022-11-22 00:29:01,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 760 GetRequests, 612 SyntacticMatches, 47 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7700 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4589, Invalid=5917, Unknown=0, NotChecked=0, Total=10506 [2022-11-22 00:29:01,433 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 141 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:01,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 299 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:29:01,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-22 00:29:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2022-11-22 00:29:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 478 states have (on average 1.002092050209205) internal successors, (479), 478 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:29:01,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2022-11-22 00:29:01,456 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 238 [2022-11-22 00:29:01,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:01,457 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2022-11-22 00:29:01,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.978947368421053) internal successors, (473), 96 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:29:01,458 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2022-11-22 00:29:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2022-11-22 00:29:01,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:01,470 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1, 1, 1] [2022-11-22 00:29:01,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:29:01,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:01,682 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:29:01,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1081584195, now seen corresponding path program 6 times [2022-11-22 00:29:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:01,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204442940] [2022-11-22 00:29:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:01,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:29:12,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:12,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204442940] [2022-11-22 00:29:12,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204442940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:29:12,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487490144] [2022-11-22 00:29:12,476 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 00:29:12,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:12,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:12,477 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:29:12,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:29:12,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 00:29:12,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:29:12,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-22 00:29:12,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:29:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:29:13,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:29:27,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:29:27,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487490144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:29:27,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1383963826] [2022-11-22 00:29:27,130 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:29:27,130 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:29:27,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:29:27,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:29:27,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:29:27,229 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:29:40,346 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12128#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:29:40,346 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:29:40,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:29:40,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-22 00:29:40,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9587768] [2022-11-22 00:29:40,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:29:40,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-22 00:29:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:40,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-22 00:29:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18365, Invalid=21037, Unknown=0, NotChecked=0, Total=39402 [2022-11-22 00:29:40,363 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:29:42,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:42,040 INFO L93 Difference]: Finished difference Result 960 states and 1055 transitions. [2022-11-22 00:29:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-22 00:29:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 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 478 [2022-11-22 00:29:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:42,045 INFO L225 Difference]: With dead ends: 960 [2022-11-22 00:29:42,046 INFO L226 Difference]: Without dead ends: 959 [2022-11-22 00:29:42,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1528 GetRequests, 1236 SyntacticMatches, 95 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29252 ImplicationChecksByTransitivity, 30.1s TimeCoverageRelationStatistics Valid=18365, Invalid=21037, Unknown=0, NotChecked=0, Total=39402 [2022-11-22 00:29:42,051 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 190 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:42,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 587 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 00:29:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-22 00:29:42,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2022-11-22 00:29:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 958 states have (on average 1.001043841336117) internal successors, (959), 958 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:29:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 959 transitions. [2022-11-22 00:29:42,096 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 959 transitions. Word has length 478 [2022-11-22 00:29:42,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:42,097 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 959 transitions. [2022-11-22 00:29:42,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.989528795811518) internal successors, (953), 192 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:29:42,098 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 959 transitions. [2022-11-22 00:29:42,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2022-11-22 00:29:42,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:42,139 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 190, 190, 1, 1, 1, 1, 1] [2022-11-22 00:29:42,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-22 00:29:42,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:42,347 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:29:42,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:42,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1947502013, now seen corresponding path program 7 times [2022-11-22 00:29:42,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:42,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387089198] [2022-11-22 00:29:42,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:42,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:30:19,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:19,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387089198] [2022-11-22 00:30:19,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387089198] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:30:19,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056120052] [2022-11-22 00:30:19,772 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 00:30:19,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:30:19,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:30:19,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:30:19,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:30:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:20,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-22 00:30:20,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:30:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:30:22,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:31:14,419 INFO L134 CoverageAnalysis]: Checked inductivity of 90535 backedges. 0 proven. 90535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:31:14,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056120052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:31:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371612743] [2022-11-22 00:31:14,423 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:31:14,423 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:31:14,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:31:14,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:31:14,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:31:14,495 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:06,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20564#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (= |ULTIMATE.start_main_~res~0#1| 0) (< 2147483646 |ULTIMATE.start_main_~restmp~0#1|) (<= 0 (+ |ULTIMATE.start_main_~xtmp~0#1| 1)) (<= |ULTIMATE.start_main_~xtmp~0#1| 2147483643) (<= 3 |ULTIMATE.start_main_~x~0#1|))' at error location [2022-11-22 00:32:06,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:32:06,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:32:06,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2022-11-22 00:32:06,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895801436] [2022-11-22 00:32:06,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-22 00:32:06,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:06,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-22 00:32:06,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73565, Invalid=78925, Unknown=0, NotChecked=0, Total=152490 [2022-11-22 00:32:06,551 INFO L87 Difference]: Start difference. First operand 959 states and 959 transitions. Second operand has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:16,063 INFO L93 Difference]: Finished difference Result 1920 states and 2111 transitions. [2022-11-22 00:32:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-22 00:32:16,065 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 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 958 [2022-11-22 00:32:16,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:16,074 INFO L225 Difference]: With dead ends: 1920 [2022-11-22 00:32:16,074 INFO L226 Difference]: Without dead ends: 1919 [2022-11-22 00:32:16,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3064 GetRequests, 2484 SyntacticMatches, 191 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113828 ImplicationChecksByTransitivity, 119.8s TimeCoverageRelationStatistics Valid=73565, Invalid=78925, Unknown=0, NotChecked=0, Total=152490 [2022-11-22 00:32:16,085 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 573 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:16,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1171 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 00:32:16,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-11-22 00:32:16,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1919. [2022-11-22 00:32:16,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1919 states, 1918 states have (on average 1.0005213764337852) internal successors, (1919), 1918 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 1919 transitions. [2022-11-22 00:32:16,170 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 1919 transitions. Word has length 958 [2022-11-22 00:32:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:16,172 INFO L495 AbstractCegarLoop]: Abstraction has 1919 states and 1919 transitions. [2022-11-22 00:32:16,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.994778067885117) internal successors, (1913), 384 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 00:32:16,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 1919 transitions. [2022-11-22 00:32:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1919 [2022-11-22 00:32:16,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:16,209 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 382, 382, 1, 1, 1, 1, 1] [2022-11-22 00:32:16,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:16,415 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-22 00:32:16,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:16,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1351817795, now seen corresponding path program 8 times [2022-11-22 00:32:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:16,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924826362] [2022-11-22 00:32:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:16,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:35:20,532 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:20,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:35:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924826362] [2022-11-22 00:35:20,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924826362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:35:20,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939342862] [2022-11-22 00:35:20,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 00:35:20,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:35:20,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:35:20,539 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:35:20,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd46c2ae-48b2-4dfe-a0e9-46550676d3f2/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 00:35:25,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-22 00:35:25,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 00:35:25,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 3457 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-22 00:35:25,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:35:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:35:28,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:38:47,376 INFO L134 CoverageAnalysis]: Checked inductivity of 365383 backedges. 0 proven. 365383 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:38:47,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939342862] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:38:47,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1817211675] [2022-11-22 00:38:47,380 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 00:38:47,380 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:38:47,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:38:47,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:38:47,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:38:47,441 INFO L180 IcfgInterpreter]: Interpretation finished