./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta --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 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- 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-dbf71c6-m [2022-10-17 17:40:47,284 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:40:47,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:40:47,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:40:47,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:40:47,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:40:47,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:40:47,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:40:47,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:40:47,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:40:47,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:40:47,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:40:47,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:40:47,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:40:47,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:40:47,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:40:47,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:40:47,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:40:47,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:40:47,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:40:47,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:40:47,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:40:47,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:40:47,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:40:47,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:40:47,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:40:47,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:40:47,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:40:47,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:40:47,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:40:47,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:40:47,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:40:47,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:40:47,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:40:47,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:40:47,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:40:47,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:40:47,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:40:47,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:40:47,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:40:47,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:40:47,424 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-10-17 17:40:47,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:40:47,447 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:40:47,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:40:47,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:40:47,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:40:47,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:40:47,449 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:40:47,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:40:47,450 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:40:47,450 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:40:47,450 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:40:47,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:40:47,451 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:40:47,451 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:40:47,451 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:40:47,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:40:47,452 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:40:47,452 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:40:47,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:40:47,453 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:40:47,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:40:47,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:40:47,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:40:47,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:40:47,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:40:47,454 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:40:47,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:40:47,455 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:40:47,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:40:47,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:40:47,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:40:47,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:47,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:40:47,456 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:40:47,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:40:47,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:40:47,457 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:40:47,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:40:47,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:40:47,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:40:47,458 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_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-10-17 17:40:47,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:40:47,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:40:47,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:40:47,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:40:47,807 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:40:47,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-10-17 17:40:47,879 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/data/eba3cb51d/475c14eea1c940bea3fd1dea2b9362a3/FLAGe83d4ca1f [2022-10-17 17:40:48,403 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:40:48,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/sv-benchmarks/c/termination-numeric/twisted.c [2022-10-17 17:40:48,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/data/eba3cb51d/475c14eea1c940bea3fd1dea2b9362a3/FLAGe83d4ca1f [2022-10-17 17:40:48,776 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/data/eba3cb51d/475c14eea1c940bea3fd1dea2b9362a3 [2022-10-17 17:40:48,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:40:48,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:40:48,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:48,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:40:48,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:40:48,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:48" (1/1) ... [2022-10-17 17:40:48,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215499c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:48, skipping insertion in model container [2022-10-17 17:40:48,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:40:48" (1/1) ... [2022-10-17 17:40:48,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:40:48,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:40:49,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:49,020 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:40:49,035 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:40:49,047 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:40:49,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49 WrapperNode [2022-10-17 17:40:49,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:40:49,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:49,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:40:49,049 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:40:49,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,064 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,086 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-10-17 17:40:49,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:40:49,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:40:49,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:40:49,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:40:49,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,116 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:40:49,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:40:49,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:40:49,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:40:49,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (1/1) ... [2022-10-17 17:40:49,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:40:49,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:49,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:40:49,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:40:49,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:40:49,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:40:49,277 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:40:49,279 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:40:49,414 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:40:49,440 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:40:49,441 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:40:49,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:49 BoogieIcfgContainer [2022-10-17 17:40:49,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:40:49,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:40:49,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:40:49,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:40:49,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:40:48" (1/3) ... [2022-10-17 17:40:49,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd9f8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:49, skipping insertion in model container [2022-10-17 17:40:49,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:40:49" (2/3) ... [2022-10-17 17:40:49,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fd9f8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:40:49, skipping insertion in model container [2022-10-17 17:40:49,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:40:49" (3/3) ... [2022-10-17 17:40:49,453 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-10-17 17:40:49,473 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:40:49,473 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:40:49,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:40:49,534 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;@1ffab93d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:40:49,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 17:40:49,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 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) [2022-10-17 17:40:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-17 17:40:49,545 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:49,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-17 17:40:49,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:49,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:49,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2538354, now seen corresponding path program 1 times [2022-10-17 17:40:49,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:49,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025896758] [2022-10-17 17:40:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:49,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:49,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025896758] [2022-10-17 17:40:49,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025896758] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:49,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:49,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:49,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769471829] [2022-10-17 17:40:49,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:49,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:49,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:49,862 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 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 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-10-17 17:40:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:50,009 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2022-10-17 17:40:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:40:50,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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 [2022-10-17 17:40:50,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:50,021 INFO L225 Difference]: With dead ends: 56 [2022-10-17 17:40:50,021 INFO L226 Difference]: Without dead ends: 35 [2022-10-17 17:40:50,026 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 [2022-10-17 17:40:50,034 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:50,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-10-17 17:40:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 27. [2022-10-17 17:40:50,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-10-17 17:40:50,091 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 4 [2022-10-17 17:40:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:50,092 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-10-17 17:40:50,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) 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) [2022-10-17 17:40:50,093 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-10-17 17:40:50,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-17 17:40:50,094 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:50,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-17 17:40:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:40:50,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash 78689019, now seen corresponding path program 1 times [2022-10-17 17:40:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:50,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907979246] [2022-10-17 17:40:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:50,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:50,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907979246] [2022-10-17 17:40:50,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907979246] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:50,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:50,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:50,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917933477] [2022-10-17 17:40:50,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:50,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:50,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:50,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:50,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:50,190 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:50,229 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2022-10-17 17:40:50,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:40:50,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-10-17 17:40:50,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:50,231 INFO L225 Difference]: With dead ends: 27 [2022-10-17 17:40:50,231 INFO L226 Difference]: Without dead ends: 26 [2022-10-17 17:40:50,232 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 [2022-10-17 17:40:50,234 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:50,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:40:50,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-10-17 17:40:50,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-10-17 17:40:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.619047619047619) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-10-17 17:40:50,244 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 5 [2022-10-17 17:40:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:50,245 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-10-17 17:40:50,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-10-17 17:40:50,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:40:50,246 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:50,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:40:50,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:40:50,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:50,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654287, now seen corresponding path program 1 times [2022-10-17 17:40:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:50,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468356373] [2022-10-17 17:40:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:50,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:50,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468356373] [2022-10-17 17:40:50,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468356373] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:50,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:50,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:40:50,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470507536] [2022-10-17 17:40:50,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:50,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:50,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:50,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:50,330 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:50,411 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-10-17 17:40:50,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:50,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:40:50,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:50,413 INFO L225 Difference]: With dead ends: 39 [2022-10-17 17:40:50,413 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:40:50,414 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 [2022-10-17 17:40:50,415 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:50,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:50,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:40:50,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-10-17 17:40:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.5769230769230769) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2022-10-17 17:40:50,441 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 6 [2022-10-17 17:40:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:50,458 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2022-10-17 17:40:50,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,458 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2022-10-17 17:40:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:40:50,459 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:50,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-17 17:40:50,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 17:40:50,460 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:50,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1855654237, now seen corresponding path program 1 times [2022-10-17 17:40:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:50,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920008240] [2022-10-17 17:40:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:50,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:50,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:50,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920008240] [2022-10-17 17:40:50,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920008240] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:50,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:50,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:50,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75074507] [2022-10-17 17:40:50,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:50,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:50,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:50,547 INFO L87 Difference]: Start difference. First operand 31 states and 41 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) [2022-10-17 17:40:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:50,613 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-10-17 17:40:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:40:50,614 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 [2022-10-17 17:40:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:50,617 INFO L225 Difference]: With dead ends: 49 [2022-10-17 17:40:50,618 INFO L226 Difference]: Without dead ends: 48 [2022-10-17 17:40:50,619 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 [2022-10-17 17:40:50,621 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 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 [2022-10-17 17:40:50,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:40:50,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-17 17:40:50,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2022-10-17 17:40:50,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.542857142857143) internal successors, (54), 39 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 54 transitions. [2022-10-17 17:40:50,644 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 54 transitions. Word has length 6 [2022-10-17 17:40:50,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:50,645 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 54 transitions. [2022-10-17 17:40:50,645 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) [2022-10-17 17:40:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 54 transitions. [2022-10-17 17:40:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:40:50,646 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:50,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 17:40:50,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1690707972, now seen corresponding path program 1 times [2022-10-17 17:40:50,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:50,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358187799] [2022-10-17 17:40:50,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:50,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:50,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:50,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358187799] [2022-10-17 17:40:50,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358187799] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:50,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:50,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:40:50,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829803519] [2022-10-17 17:40:50,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:50,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:40:50,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:50,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:40:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:40:50,725 INFO L87 Difference]: Start difference. First operand 40 states and 54 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:50,781 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-10-17 17:40:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:40:50,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:40:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:50,785 INFO L225 Difference]: With dead ends: 45 [2022-10-17 17:40:50,785 INFO L226 Difference]: Without dead ends: 42 [2022-10-17 17:40:50,786 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 [2022-10-17 17:40:50,791 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:50,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:40:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-10-17 17:40:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-10-17 17:40:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 38 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 52 transitions. [2022-10-17 17:40:50,818 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 52 transitions. Word has length 7 [2022-10-17 17:40:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:50,821 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 52 transitions. [2022-10-17 17:40:50,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 52 transitions. [2022-10-17 17:40:50,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:40:50,823 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:50,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 17:40:50,824 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:50,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1690706434, now seen corresponding path program 1 times [2022-10-17 17:40:50,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:50,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144637834] [2022-10-17 17:40:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:50,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:50,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:50,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:50,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:50,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144637834] [2022-10-17 17:40:50,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144637834] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:50,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:40:50,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:40:50,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356879784] [2022-10-17 17:40:50,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:40:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:40:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:40:50,886 INFO L87 Difference]: Start difference. First operand 39 states and 52 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:50,921 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2022-10-17 17:40:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:40:50,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 17:40:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:50,924 INFO L225 Difference]: With dead ends: 39 [2022-10-17 17:40:50,924 INFO L226 Difference]: Without dead ends: 38 [2022-10-17 17:40:50,925 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 [2022-10-17 17:40:50,930 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:50,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:40:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-10-17 17:40:50,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-10-17 17:40:50,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2022-10-17 17:40:50,947 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 7 [2022-10-17 17:40:50,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:50,947 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2022-10-17 17:40:50,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:50,948 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2022-10-17 17:40:50,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 17:40:50,948 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:50,948 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:50,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 17:40:50,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:50,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash -827531145, now seen corresponding path program 1 times [2022-10-17 17:40:50,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:50,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135206416] [2022-10-17 17:40:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:50,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:51,008 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135206416] [2022-10-17 17:40:51,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135206416] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:51,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594248717] [2022-10-17 17:40:51,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:51,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:51,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:51,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:40:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:51,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:40:51,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:51,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:51,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594248717] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [925048724] [2022-10-17 17:40:51,225 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-10-17 17:40:51,226 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:51,229 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:51,234 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:51,234 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:51,580 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:51,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [925048724] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:51,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:51,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2022-10-17 17:40:51,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858123452] [2022-10-17 17:40:51,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:51,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:40:51,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:51,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:40:51,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 17:40:51,900 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-10-17 17:40:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:52,239 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2022-10-17 17:40:52,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:40:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 8 [2022-10-17 17:40:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:52,241 INFO L225 Difference]: With dead ends: 46 [2022-10-17 17:40:52,241 INFO L226 Difference]: Without dead ends: 41 [2022-10-17 17:40:52,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:40:52,242 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:52,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 29 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:52,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-17 17:40:52,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2022-10-17 17:40:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 36 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) [2022-10-17 17:40:52,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-10-17 17:40:52,252 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 8 [2022-10-17 17:40:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:52,268 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-10-17 17:40:52,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-10-17 17:40:52,268 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-10-17 17:40:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:40:52,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:52,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:52,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:52,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:52,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:52,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash -753827850, now seen corresponding path program 1 times [2022-10-17 17:40:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:52,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496793858] [2022-10-17 17:40:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:52,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:52,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:52,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496793858] [2022-10-17 17:40:52,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496793858] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:52,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420794965] [2022-10-17 17:40:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:52,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:52,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:52,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:40:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:52,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:40:52,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:52,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:52,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420794965] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1500775243] [2022-10-17 17:40:52,729 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-10-17 17:40:52,729 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:52,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:52,730 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:52,730 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:52,799 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:53,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1500775243] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:53,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:53,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2022-10-17 17:40:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649919397] [2022-10-17 17:40:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:53,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:40:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:40:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:40:53,049 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2022-10-17 17:40:53,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:53,143 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2022-10-17 17:40:53,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:40:53,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-10-17 17:40:53,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:53,144 INFO L225 Difference]: With dead ends: 74 [2022-10-17 17:40:53,144 INFO L226 Difference]: Without dead ends: 48 [2022-10-17 17:40:53,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:40:53,146 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 17 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:53,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 34 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:53,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-10-17 17:40:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 43. [2022-10-17 17:40:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.358974358974359) internal successors, (53), 42 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) [2022-10-17 17:40:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-10-17 17:40:53,166 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 10 [2022-10-17 17:40:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:53,167 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-10-17 17:40:53,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2022-10-17 17:40:53,167 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-10-17 17:40:53,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:40:53,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:53,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-17 17:40:53,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-10-17 17:40:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:53,390 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:53,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:53,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1133512047, now seen corresponding path program 1 times [2022-10-17 17:40:53,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677011119] [2022-10-17 17:40:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:53,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:53,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:53,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677011119] [2022-10-17 17:40:53,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677011119] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:53,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751041674] [2022-10-17 17:40:53,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:53,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:53,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:53,481 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:53,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:40:53,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:53,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:40:53,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:53,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:53,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751041674] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:53,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1597289630] [2022-10-17 17:40:53,601 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:40:53,601 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:53,601 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:53,602 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:53,602 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:53,949 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:54,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1597289630] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:54,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:54,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 13 [2022-10-17 17:40:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337548504] [2022-10-17 17:40:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:40:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:40:54,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-10-17 17:40:54,362 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-10-17 17:40:54,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:54,906 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2022-10-17 17:40:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:40:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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 13 [2022-10-17 17:40:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:54,908 INFO L225 Difference]: With dead ends: 71 [2022-10-17 17:40:54,908 INFO L226 Difference]: Without dead ends: 46 [2022-10-17 17:40:54,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:40:54,909 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:54,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 42 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-10-17 17:40:54,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-10-17 17:40:54,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:54,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-10-17 17:40:54,927 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 13 [2022-10-17 17:40:54,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:54,927 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-10-17 17:40:54,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-10-17 17:40:54,928 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-10-17 17:40:54,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 17:40:54,929 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:54,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:54,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 17:40:55,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:55,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1862452426, now seen corresponding path program 1 times [2022-10-17 17:40:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:55,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851539824] [2022-10-17 17:40:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:55,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851539824] [2022-10-17 17:40:55,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851539824] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097375599] [2022-10-17 17:40:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:55,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:55,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:55,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:55,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:40:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:55,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:40:55,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:55,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:55,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:55,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097375599] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:55,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1723859264] [2022-10-17 17:40:55,421 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:40:55,422 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:55,422 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:55,422 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:55,422 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:55,447 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:55,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1723859264] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:55,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:55,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 19 [2022-10-17 17:40:55,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604656198] [2022-10-17 17:40:55,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:55,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:40:55,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:55,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:40:55,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:40:55,585 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:55,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:55,650 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2022-10-17 17:40:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 17:40:55,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-10-17 17:40:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:55,651 INFO L225 Difference]: With dead ends: 72 [2022-10-17 17:40:55,651 INFO L226 Difference]: Without dead ends: 53 [2022-10-17 17:40:55,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:40:55,652 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:55,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 32 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:40:55,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-17 17:40:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-10-17 17:40:55,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 45 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) [2022-10-17 17:40:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-10-17 17:40:55,672 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 13 [2022-10-17 17:40:55,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:55,673 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-10-17 17:40:55,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:55,673 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-10-17 17:40:55,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:40:55,673 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:55,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:55,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:55,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 17:40:55,892 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:55,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1948716347, now seen corresponding path program 1 times [2022-10-17 17:40:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:55,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981307603] [2022-10-17 17:40:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:55,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:55,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:55,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:55,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981307603] [2022-10-17 17:40:55,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981307603] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:55,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910883132] [2022-10-17 17:40:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:55,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:55,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:55,966 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:55,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:40:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:55,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:40:55,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:56,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:40:56,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910883132] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:56,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1203400499] [2022-10-17 17:40:56,173 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:40:56,173 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:56,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:56,173 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:56,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:56,392 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:57,395 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1701#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-10-17 17:40:57,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:40:57,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:57,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-10-17 17:40:57,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229032812] [2022-10-17 17:40:57,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:40:57,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 17:40:57,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 17:40:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-10-17 17:40:57,398 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 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) [2022-10-17 17:40:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:40:57,855 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2022-10-17 17:40:57,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 17:40:57,856 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 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 14 [2022-10-17 17:40:57,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:40:57,857 INFO L225 Difference]: With dead ends: 136 [2022-10-17 17:40:57,857 INFO L226 Difference]: Without dead ends: 133 [2022-10-17 17:40:57,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=344, Invalid=1462, Unknown=0, NotChecked=0, Total=1806 [2022-10-17 17:40:57,859 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 102 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:40:57,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 46 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:40:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-10-17 17:40:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 96. [2022-10-17 17:40:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.3043478260869565) internal successors, (120), 95 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:40:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 120 transitions. [2022-10-17 17:40:57,880 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 120 transitions. Word has length 14 [2022-10-17 17:40:57,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:40:57,881 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 120 transitions. [2022-10-17 17:40:57,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.625) internal successors, (42), 16 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) [2022-10-17 17:40:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 120 transitions. [2022-10-17 17:40:57,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 17:40:57,882 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:40:57,882 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:40:57,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:40:58,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:58,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:40:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:40:58,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1948716397, now seen corresponding path program 1 times [2022-10-17 17:40:58,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:40:58,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045047322] [2022-10-17 17:40:58,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:58,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:40:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:40:58,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:40:58,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045047322] [2022-10-17 17:40:58,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045047322] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:40:58,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724999372] [2022-10-17 17:40:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:40:58,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:40:58,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:40:58,173 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:40:58,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:40:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:40:58,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:40:58,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:40:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:40:58,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:40:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:40:58,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724999372] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:40:58,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1909509790] [2022-10-17 17:40:58,275 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-10-17 17:40:58,275 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:40:58,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:40:58,275 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:40:58,275 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:40:58,537 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:40:59,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1909509790] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:40:59,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:40:59,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 4, 4] total 17 [2022-10-17 17:40:59,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575349976] [2022-10-17 17:40:59,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:40:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 17:40:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:40:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 17:40:59,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:40:59,359 INFO L87 Difference]: Start difference. First operand 96 states and 120 transitions. Second operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:00,521 INFO L93 Difference]: Finished difference Result 164 states and 208 transitions. [2022-10-17 17:41:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 17:41:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-10-17 17:41:00,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:00,523 INFO L225 Difference]: With dead ends: 164 [2022-10-17 17:41:00,523 INFO L226 Difference]: Without dead ends: 139 [2022-10-17 17:41:00,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2022-10-17 17:41:00,525 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 58 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:00,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 47 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:41:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-17 17:41:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 127. [2022-10-17 17:41:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 123 states have (on average 1.2845528455284554) internal successors, (158), 126 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:00,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 158 transitions. [2022-10-17 17:41:00,555 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 158 transitions. Word has length 14 [2022-10-17 17:41:00,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:00,555 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 158 transitions. [2022-10-17 17:41:00,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:00,555 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 158 transitions. [2022-10-17 17:41:00,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:41:00,556 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:00,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:00,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:00,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:00,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:00,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:00,772 INFO L85 PathProgramCache]: Analyzing trace with hash 280701081, now seen corresponding path program 1 times [2022-10-17 17:41:00,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:00,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229138325] [2022-10-17 17:41:00,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:00,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:41:00,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:00,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229138325] [2022-10-17 17:41:00,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229138325] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:00,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:41:00,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:41:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013110940] [2022-10-17 17:41:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:41:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:41:00,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:00,798 INFO L87 Difference]: Start difference. First operand 127 states and 158 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:00,912 INFO L93 Difference]: Finished difference Result 164 states and 204 transitions. [2022-10-17 17:41:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:41:00,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-10-17 17:41:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:00,915 INFO L225 Difference]: With dead ends: 164 [2022-10-17 17:41:00,915 INFO L226 Difference]: Without dead ends: 134 [2022-10-17 17:41:00,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:41:00,918 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:00,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:41:00,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-10-17 17:41:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2022-10-17 17:41:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 124 states have (on average 1.2419354838709677) internal successors, (154), 127 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 154 transitions. [2022-10-17 17:41:00,950 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 154 transitions. Word has length 15 [2022-10-17 17:41:00,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:00,950 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 154 transitions. [2022-10-17 17:41:00,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 154 transitions. [2022-10-17 17:41:00,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:41:00,952 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:00,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-17 17:41:00,953 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:00,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -829245942, now seen corresponding path program 1 times [2022-10-17 17:41:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:00,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704195402] [2022-10-17 17:41:00,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:00,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:41:01,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704195402] [2022-10-17 17:41:01,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704195402] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:01,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616896906] [2022-10-17 17:41:01,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:01,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:01,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:01,029 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:01,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 17:41:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:01,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:41:01,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:01,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:41:01,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:41:01,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616896906] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:01,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2102767989] [2022-10-17 17:41:01,150 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-10-17 17:41:01,151 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:01,151 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:01,151 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:01,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:01,862 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:02,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3166#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#t~post1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-10-17 17:41:02,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:02,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:02,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-10-17 17:41:02,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410065295] [2022-10-17 17:41:02,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:41:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:02,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:41:02,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-10-17 17:41:02,569 INFO L87 Difference]: Start difference. First operand 128 states and 154 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:02,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:02,690 INFO L93 Difference]: Finished difference Result 243 states and 301 transitions. [2022-10-17 17:41:02,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:41:02,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 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 17 [2022-10-17 17:41:02,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:02,693 INFO L225 Difference]: With dead ends: 243 [2022-10-17 17:41:02,693 INFO L226 Difference]: Without dead ends: 242 [2022-10-17 17:41:02,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-10-17 17:41:02,694 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:02,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 70 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:41:02,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-10-17 17:41:02,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 202. [2022-10-17 17:41:02,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.2777777777777777) internal successors, (253), 201 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:02,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 253 transitions. [2022-10-17 17:41:02,741 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 253 transitions. Word has length 17 [2022-10-17 17:41:02,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:02,742 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 253 transitions. [2022-10-17 17:41:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:02,742 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 253 transitions. [2022-10-17 17:41:02,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:41:02,743 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:02,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:02,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:02,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 17:41:02,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:02,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1677561500, now seen corresponding path program 1 times [2022-10-17 17:41:02,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:02,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413241080] [2022-10-17 17:41:02,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:02,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:03,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:03,057 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:03,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413241080] [2022-10-17 17:41:03,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413241080] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:03,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734368810] [2022-10-17 17:41:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:03,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:03,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:03,072 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:03,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 17:41:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:03,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 17:41:03,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:03,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:41:03,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734368810] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:03,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:41:03,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 14 [2022-10-17 17:41:03,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036621639] [2022-10-17 17:41:03,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:03,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 17:41:03,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:03,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 17:41:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2022-10-17 17:41:03,237 INFO L87 Difference]: Start difference. First operand 202 states and 253 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:03,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:03,435 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2022-10-17 17:41:03,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 17:41:03,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 17:41:03,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:03,437 INFO L225 Difference]: With dead ends: 218 [2022-10-17 17:41:03,437 INFO L226 Difference]: Without dead ends: 215 [2022-10-17 17:41:03,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-10-17 17:41:03,439 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:03,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 55 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:41:03,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-10-17 17:41:03,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 198. [2022-10-17 17:41:03,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 195 states have (on average 1.2666666666666666) internal successors, (247), 197 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 247 transitions. [2022-10-17 17:41:03,474 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 247 transitions. Word has length 18 [2022-10-17 17:41:03,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:03,475 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 247 transitions. [2022-10-17 17:41:03,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:03,475 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 247 transitions. [2022-10-17 17:41:03,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:41:03,476 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:03,476 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:03,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:03,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-17 17:41:03,696 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:03,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1677597891, now seen corresponding path program 1 times [2022-10-17 17:41:03,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:03,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416327016] [2022-10-17 17:41:03,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:03,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:03,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416327016] [2022-10-17 17:41:03,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416327016] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:03,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438314191] [2022-10-17 17:41:03,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:03,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:03,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:03,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:03,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 17:41:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:03,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 17:41:03,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:03,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:03,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438314191] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:03,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2082762197] [2022-10-17 17:41:03,903 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-10-17 17:41:03,903 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:03,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:03,904 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:03,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:04,139 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:04,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2082762197] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:41:04,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:04,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6, 6] total 19 [2022-10-17 17:41:04,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936393519] [2022-10-17 17:41:04,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:41:04,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 17:41:04,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:04,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 17:41:04,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2022-10-17 17:41:04,822 INFO L87 Difference]: Start difference. First operand 198 states and 247 transitions. Second operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:05,399 INFO L93 Difference]: Finished difference Result 304 states and 390 transitions. [2022-10-17 17:41:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 17:41:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-10-17 17:41:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:05,401 INFO L225 Difference]: With dead ends: 304 [2022-10-17 17:41:05,401 INFO L226 Difference]: Without dead ends: 250 [2022-10-17 17:41:05,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-10-17 17:41:05,403 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:05,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 55 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-10-17 17:41:05,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 195. [2022-10-17 17:41:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 193 states have (on average 1.233160621761658) internal successors, (238), 194 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 238 transitions. [2022-10-17 17:41:05,453 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 238 transitions. Word has length 18 [2022-10-17 17:41:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:05,454 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 238 transitions. [2022-10-17 17:41:05,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:05,454 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 238 transitions. [2022-10-17 17:41:05,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:41:05,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:05,455 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:05,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:05,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:05,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:05,657 INFO L85 PathProgramCache]: Analyzing trace with hash -789615675, now seen corresponding path program 2 times [2022-10-17 17:41:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40046242] [2022-10-17 17:41:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:05,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:05,775 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:05,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40046242] [2022-10-17 17:41:05,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40046242] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:05,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53877855] [2022-10-17 17:41:05,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:41:05,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:05,776 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:05,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 17:41:05,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-17 17:41:05,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:41:05,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:41:05,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:05,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:06,100 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:06,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53877855] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:06,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [596700052] [2022-10-17 17:41:06,102 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:41:06,102 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:06,103 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:06,103 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:06,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:06,270 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:07,066 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5590#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-10-17 17:41:07,066 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:07,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:07,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-10-17 17:41:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088816189] [2022-10-17 17:41:07,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-17 17:41:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-17 17:41:07,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1278, Unknown=0, NotChecked=0, Total=1560 [2022-10-17 17:41:07,069 INFO L87 Difference]: Start difference. First operand 195 states and 238 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:07,574 INFO L93 Difference]: Finished difference Result 316 states and 379 transitions. [2022-10-17 17:41:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-17 17:41:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-17 17:41:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:07,577 INFO L225 Difference]: With dead ends: 316 [2022-10-17 17:41:07,577 INFO L226 Difference]: Without dead ends: 310 [2022-10-17 17:41:07,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=651, Invalid=2541, Unknown=0, NotChecked=0, Total=3192 [2022-10-17 17:41:07,581 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 172 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:07,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 73 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:07,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-10-17 17:41:07,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 281. [2022-10-17 17:41:07,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 279 states have (on average 1.1935483870967742) internal successors, (333), 280 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:07,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 333 transitions. [2022-10-17 17:41:07,646 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 333 transitions. Word has length 22 [2022-10-17 17:41:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:07,647 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 333 transitions. [2022-10-17 17:41:07,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 333 transitions. [2022-10-17 17:41:07,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 17:41:07,648 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:07,648 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:07,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:07,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-17 17:41:07,864 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:07,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:07,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1390090171, now seen corresponding path program 3 times [2022-10-17 17:41:07,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:07,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058284953] [2022-10-17 17:41:07,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:07,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:07,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:07,990 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058284953] [2022-10-17 17:41:07,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058284953] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:07,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829811620] [2022-10-17 17:41:07,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:41:07,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:07,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:07,994 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:08,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 17:41:08,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:41:08,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:41:08,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:41:08,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:08,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:08,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:08,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829811620] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:08,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1155312386] [2022-10-17 17:41:08,348 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:41:08,348 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:08,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:08,348 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:08,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:08,507 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:09,466 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6685#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-10-17 17:41:09,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:09,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:09,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-10-17 17:41:09,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693502860] [2022-10-17 17:41:09,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:09,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-10-17 17:41:09,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:09,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-10-17 17:41:09,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1269, Unknown=0, NotChecked=0, Total=1560 [2022-10-17 17:41:09,468 INFO L87 Difference]: Start difference. First operand 281 states and 333 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:09,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:09,960 INFO L93 Difference]: Finished difference Result 405 states and 477 transitions. [2022-10-17 17:41:09,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-17 17:41:09,960 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-10-17 17:41:09,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:09,962 INFO L225 Difference]: With dead ends: 405 [2022-10-17 17:41:09,962 INFO L226 Difference]: Without dead ends: 397 [2022-10-17 17:41:09,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=624, Invalid=2682, Unknown=0, NotChecked=0, Total=3306 [2022-10-17 17:41:09,964 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 181 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:09,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 57 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:09,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-10-17 17:41:10,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 275. [2022-10-17 17:41:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 273 states have (on average 1.1941391941391941) internal successors, (326), 274 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:10,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 326 transitions. [2022-10-17 17:41:10,021 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 326 transitions. Word has length 22 [2022-10-17 17:41:10,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:10,021 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 326 transitions. [2022-10-17 17:41:10,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:10,021 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 326 transitions. [2022-10-17 17:41:10,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 17:41:10,023 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:10,023 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:10,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:10,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-17 17:41:10,228 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:10,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:10,228 INFO L85 PathProgramCache]: Analyzing trace with hash -685928817, now seen corresponding path program 4 times [2022-10-17 17:41:10,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:10,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356199396] [2022-10-17 17:41:10,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:10,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:10,431 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:10,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:10,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356199396] [2022-10-17 17:41:10,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356199396] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:10,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898635975] [2022-10-17 17:41:10,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:41:10,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:10,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:10,445 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:10,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 17:41:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:10,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 17:41:10,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:10,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:10,981 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:10,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898635975] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:10,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1102071619] [2022-10-17 17:41:10,984 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:41:10,984 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:10,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:10,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:10,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:11,168 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:12,173 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7963#(and (<= |ULTIMATE.start_f_~i~0#1| 1) (<= |ULTIMATE.start_f_~k#1| 1) (<= |ULTIMATE.start_main_#t~nondet2#1| 1) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= |ULTIMATE.start_f_#in~k#1| 1) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647))' at error location [2022-10-17 17:41:12,173 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:12,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:12,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-10-17 17:41:12,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525107146] [2022-10-17 17:41:12,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:12,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-10-17 17:41:12,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:12,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-10-17 17:41:12,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=2178, Unknown=0, NotChecked=0, Total=2652 [2022-10-17 17:41:12,176 INFO L87 Difference]: Start difference. First operand 275 states and 326 transitions. Second operand has 41 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:12,937 INFO L93 Difference]: Finished difference Result 494 states and 577 transitions. [2022-10-17 17:41:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-10-17 17:41:12,937 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-17 17:41:12,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:12,940 INFO L225 Difference]: With dead ends: 494 [2022-10-17 17:41:12,940 INFO L226 Difference]: Without dead ends: 486 [2022-10-17 17:41:12,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1293, Invalid=5027, Unknown=0, NotChecked=0, Total=6320 [2022-10-17 17:41:12,943 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 406 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:12,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 72 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:41:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-10-17 17:41:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 327. [2022-10-17 17:41:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.1815384615384616) internal successors, (384), 326 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 384 transitions. [2022-10-17 17:41:13,011 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 384 transitions. Word has length 30 [2022-10-17 17:41:13,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:13,011 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 384 transitions. [2022-10-17 17:41:13,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.25) internal successors, (90), 40 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:13,012 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 384 transitions. [2022-10-17 17:41:13,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-17 17:41:13,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:13,013 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-10-17 17:41:13,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:13,217 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1482474188, now seen corresponding path program 1 times [2022-10-17 17:41:13,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:13,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390561912] [2022-10-17 17:41:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:13,498 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:13,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390561912] [2022-10-17 17:41:13,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390561912] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:13,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55774070] [2022-10-17 17:41:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:13,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:13,500 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:13,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-17 17:41:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:13,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 17:41:13,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:13,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:14,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55774070] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:14,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [312923022] [2022-10-17 17:41:14,013 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:41:14,014 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:14,014 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:14,014 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:14,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:14,427 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:15,349 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9489#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647) (<= 1 |ULTIMATE.start_f_~i~0#1|))' at error location [2022-10-17 17:41:15,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:15,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:15,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-10-17 17:41:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17081492] [2022-10-17 17:41:15,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:15,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-10-17 17:41:15,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:15,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-10-17 17:41:15,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=2174, Unknown=0, NotChecked=0, Total=2550 [2022-10-17 17:41:15,352 INFO L87 Difference]: Start difference. First operand 327 states and 384 transitions. Second operand has 41 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:16,229 INFO L93 Difference]: Finished difference Result 580 states and 679 transitions. [2022-10-17 17:41:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-10-17 17:41:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-10-17 17:41:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:16,234 INFO L225 Difference]: With dead ends: 580 [2022-10-17 17:41:16,234 INFO L226 Difference]: Without dead ends: 573 [2022-10-17 17:41:16,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2556 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1116, Invalid=5204, Unknown=0, NotChecked=0, Total=6320 [2022-10-17 17:41:16,237 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 303 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:16,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 79 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:41:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-10-17 17:41:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 384. [2022-10-17 17:41:16,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 382 states have (on average 1.1858638743455496) internal successors, (453), 383 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 453 transitions. [2022-10-17 17:41:16,313 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 453 transitions. Word has length 33 [2022-10-17 17:41:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:16,314 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 453 transitions. [2022-10-17 17:41:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.475) internal successors, (99), 40 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 453 transitions. [2022-10-17 17:41:16,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 17:41:16,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:16,315 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-10-17 17:41:16,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:16,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:16,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash 788101896, now seen corresponding path program 1 times [2022-10-17 17:41:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:16,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801208647] [2022-10-17 17:41:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:16,722 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:41:16,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:16,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801208647] [2022-10-17 17:41:16,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801208647] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:16,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163098059] [2022-10-17 17:41:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:16,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:16,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:16,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-17 17:41:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:16,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:41:16,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:41:16,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:16,960 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 17:41:16,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163098059] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:16,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1316826993] [2022-10-17 17:41:16,964 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-10-17 17:41:16,965 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:16,965 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:16,965 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:16,966 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:17,520 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:18,153 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11239#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#t~post1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-10-17 17:41:18,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:18,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:18,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-10-17 17:41:18,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706330858] [2022-10-17 17:41:18,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-17 17:41:18,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:18,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-17 17:41:18,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2022-10-17 17:41:18,155 INFO L87 Difference]: Start difference. First operand 384 states and 453 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:18,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:41:18,508 INFO L93 Difference]: Finished difference Result 664 states and 776 transitions. [2022-10-17 17:41:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-17 17:41:18,508 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-10-17 17:41:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:41:18,513 INFO L225 Difference]: With dead ends: 664 [2022-10-17 17:41:18,513 INFO L226 Difference]: Without dead ends: 663 [2022-10-17 17:41:18,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=336, Invalid=1304, Unknown=0, NotChecked=0, Total=1640 [2022-10-17 17:41:18,515 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 349 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:41:18,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 164 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:41:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-10-17 17:41:18,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 501. [2022-10-17 17:41:18,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 499 states have (on average 1.2044088176352705) internal successors, (601), 500 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 601 transitions. [2022-10-17 17:41:18,606 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 601 transitions. Word has length 36 [2022-10-17 17:41:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:41:18,606 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 601 transitions. [2022-10-17 17:41:18,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 21 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:41:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 601 transitions. [2022-10-17 17:41:18,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 17:41:18,608 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:41:18,609 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-17 17:41:18,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-17 17:41:18,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:18,821 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:41:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:41:18,822 INFO L85 PathProgramCache]: Analyzing trace with hash -2106323360, now seen corresponding path program 1 times [2022-10-17 17:41:18,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:41:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361782801] [2022-10-17 17:41:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:41:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:19,211 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:41:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361782801] [2022-10-17 17:41:19,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361782801] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:41:19,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358884410] [2022-10-17 17:41:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:41:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:41:19,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:41:19,213 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:41:19,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5f6f1978-2b36-4712-b491-444cc14fc7cd/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-17 17:41:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:41:19,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-17 17:41:19,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:41:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:19,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:41:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:41:20,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358884410] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:41:20,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [82520999] [2022-10-17 17:41:20,039 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-10-17 17:41:20,040 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:41:20,040 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:41:20,040 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:41:20,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:41:20,506 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:41:21,530 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13344#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (< |ULTIMATE.start_f_~j~0#1| |ULTIMATE.start_f_~l#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~i~0#1|) (not (<= (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|) 2147483647)) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-10-17 17:41:21,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:41:21,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:41:21,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-10-17 17:41:21,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449481913] [2022-10-17 17:41:21,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:41:21,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-10-17 17:41:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:41:21,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-10-17 17:41:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=704, Invalid=3852, Unknown=0, NotChecked=0, Total=4556 [2022-10-17 17:41:21,534 INFO L87 Difference]: Start difference. First operand 501 states and 601 transitions. Second operand has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 58 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)