./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI --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 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a --- 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-5e519f3 [2022-11-03 01:51:55,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:51:55,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:51:55,773 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:51:55,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:51:55,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:51:55,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:51:55,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:51:55,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:51:55,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:51:55,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:51:55,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:51:55,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:51:55,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:51:55,785 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:51:55,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:51:55,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:51:55,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:51:55,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:51:55,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:51:55,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:51:55,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:51:55,796 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:51:55,797 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:51:55,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:51:55,800 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:51:55,801 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:51:55,802 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:51:55,802 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:51:55,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:51:55,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:51:55,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:51:55,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:51:55,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:51:55,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:51:55,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:51:55,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:51:55,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:51:55,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:51:55,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:51:55,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:51:55,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-03 01:51:55,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:51:55,835 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:51:55,835 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:51:55,836 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:51:55,836 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:51:55,837 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:51:55,837 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:51:55,837 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:51:55,837 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:51:55,838 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:51:55,838 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:51:55,838 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:51:55,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:51:55,839 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:51:55,839 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:51:55,839 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:51:55,840 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:51:55,840 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:51:55,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:51:55,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:51:55,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:51:55,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:51:55,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:51:55,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:51:55,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:51:55,843 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 01:51:55,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:51:55,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:51:55,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:51:55,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:51:55,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:51:55,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:51:55,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:51:55,845 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:51:55,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:51:55,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:51:55,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:51:55,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:51:55,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:51:55,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:51:55,846 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_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47d7aa734a1bf75c79acf2b3acca3677f12d2522fb1fc624c15ccfe9b5a8438a [2022-11-03 01:51:56,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:51:56,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:51:56,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:51:56,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:51:56,186 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:51:56,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2022-11-03 01:51:56,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/data/188ecc113/42e4183ef8b842e98414ce6d87b16ce6/FLAGa9fd1449c [2022-11-03 01:51:56,736 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:51:56,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2022-11-03 01:51:56,743 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/data/188ecc113/42e4183ef8b842e98414ce6d87b16ce6/FLAGa9fd1449c [2022-11-03 01:51:57,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/data/188ecc113/42e4183ef8b842e98414ce6d87b16ce6 [2022-11-03 01:51:57,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:51:57,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:51:57,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:51:57,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:51:57,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:51:57,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79fac2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57, skipping insertion in model container [2022-11-03 01:51:57,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:51:57,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:51:57,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:51:57,397 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:51:57,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:51:57,427 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:51:57,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57 WrapperNode [2022-11-03 01:51:57,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:51:57,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:51:57,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:51:57,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:51:57,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,462 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2022-11-03 01:51:57,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:51:57,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:51:57,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:51:57,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:51:57,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:51:57,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:51:57,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:51:57,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:51:57,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (1/1) ... [2022-11-03 01:51:57,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:51:57,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:57,539 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:51:57,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:51:57,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:51:57,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:51:57,700 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:51:57,702 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:51:57,869 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:51:57,901 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:51:57,901 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:51:57,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:57 BoogieIcfgContainer [2022-11-03 01:51:57,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:51:57,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:51:57,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:51:57,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:51:57,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:51:57" (1/3) ... [2022-11-03 01:51:57,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ad3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:57, skipping insertion in model container [2022-11-03 01:51:57,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:51:57" (2/3) ... [2022-11-03 01:51:57,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ad3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:51:57, skipping insertion in model container [2022-11-03 01:51:57,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:51:57" (3/3) ... [2022-11-03 01:51:57,931 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-2.c [2022-11-03 01:51:57,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:51:57,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-03 01:51:58,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:51:58,077 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;@7f8f2b74, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:51:58,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-03 01:51:58,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:51:58,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:58,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:51:58,103 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)] === [2022-11-03 01:51:58,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:58,114 INFO L85 PathProgramCache]: Analyzing trace with hash 69427029, now seen corresponding path program 1 times [2022-11-03 01:51:58,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:58,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800859791] [2022-11-03 01:51:58,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:58,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:58,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:58,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800859791] [2022-11-03 01:51:58,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800859791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:58,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:58,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:51:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686638203] [2022-11-03 01:51:58,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:58,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:58,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:58,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,399 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:58,495 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-03 01:51:58,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:58,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 01:51:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:58,514 INFO L225 Difference]: With dead ends: 32 [2022-11-03 01:51:58,515 INFO L226 Difference]: Without dead ends: 26 [2022-11-03 01:51:58,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,527 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:58,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:58,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-03 01:51:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-03 01:51:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-03 01:51:58,565 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 5 [2022-11-03 01:51:58,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:58,565 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-03 01:51:58,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,566 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-03 01:51:58,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:51:58,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:58,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:51:58,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:51:58,567 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)] === [2022-11-03 01:51:58,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2142729346, now seen corresponding path program 1 times [2022-11-03 01:51:58,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:58,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625252603] [2022-11-03 01:51:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:58,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:58,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:58,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625252603] [2022-11-03 01:51:58,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625252603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:58,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:58,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:51:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507819335] [2022-11-03 01:51:58,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:58,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,609 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:58,637 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-11-03 01:51:58,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:58,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:51:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:58,639 INFO L225 Difference]: With dead ends: 40 [2022-11-03 01:51:58,640 INFO L226 Difference]: Without dead ends: 38 [2022-11-03 01:51:58,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,642 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:58,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:58,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-03 01:51:58,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2022-11-03 01:51:58,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.5666666666666667) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2022-11-03 01:51:58,661 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 6 [2022-11-03 01:51:58,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:58,662 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2022-11-03 01:51:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,663 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2022-11-03 01:51:58,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:51:58,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:58,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:58,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:51:58,664 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)] === [2022-11-03 01:51:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash -2000100226, now seen corresponding path program 1 times [2022-11-03 01:51:58,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:58,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383623052] [2022-11-03 01:51:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:58,712 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:58,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383623052] [2022-11-03 01:51:58,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383623052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:58,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:58,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:51:58,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626733578] [2022-11-03 01:51:58,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:58,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:58,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:58,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:58,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,715 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:58,736 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2022-11-03 01:51:58,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:58,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-03 01:51:58,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:58,739 INFO L225 Difference]: With dead ends: 42 [2022-11-03 01:51:58,740 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 01:51:58,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,742 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:58,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:58,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 01:51:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2022-11-03 01:51:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 38 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) [2022-11-03 01:51:58,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2022-11-03 01:51:58,759 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 7 [2022-11-03 01:51:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:58,759 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2022-11-03 01:51:58,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2022-11-03 01:51:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 01:51:58,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:58,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:58,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:51:58,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:51:58,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1873564800, now seen corresponding path program 1 times [2022-11-03 01:51:58,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:58,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196205704] [2022-11-03 01:51:58,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:58,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:58,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196205704] [2022-11-03 01:51:58,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196205704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:51:58,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:51:58,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:51:58,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654739801] [2022-11-03 01:51:58,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:51:58,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:51:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:51:58,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,838 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:58,868 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-11-03 01:51:58,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:51:58,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 01:51:58,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:58,872 INFO L225 Difference]: With dead ends: 39 [2022-11-03 01:51:58,872 INFO L226 Difference]: Without dead ends: 38 [2022-11-03 01:51:58,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:51:58,874 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:58,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:51:58,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-03 01:51:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-03 01:51:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-03 01:51:58,882 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 8 [2022-11-03 01:51:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:58,883 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-03 01:51:58,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-03 01:51:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 01:51:58,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:58,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:51:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:51:58,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:51:58,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:51:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2026065806, now seen corresponding path program 1 times [2022-11-03 01:51:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:51:58,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651807282] [2022-11-03 01:51:58,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:51:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:58,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:51:58,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651807282] [2022-11-03 01:51:58,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651807282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:51:58,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070644989] [2022-11-03 01:51:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:51:58,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:51:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:51:58,951 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:51:58,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:51:58,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:51:58,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:51:59,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:51:59,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:59,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:51:59,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:51:59,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070644989] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:51:59,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [793667287] [2022-11-03 01:51:59,108 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:51:59,109 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:51:59,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:51:59,119 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:51:59,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:51:59,507 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:51:59,876 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '418#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:51:59,876 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:51:59,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:51:59,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-03 01:51:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474600378] [2022-11-03 01:51:59,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:51:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:51:59,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:51:59,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:51:59,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:51:59,879 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:51:59,950 INFO L93 Difference]: Finished difference Result 97 states and 134 transitions. [2022-11-03 01:51:59,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:51:59,951 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 01:51:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:51:59,952 INFO L225 Difference]: With dead ends: 97 [2022-11-03 01:51:59,952 INFO L226 Difference]: Without dead ends: 95 [2022-11-03 01:51:59,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:51:59,954 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:51:59,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 37 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:51:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-03 01:51:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2022-11-03 01:51:59,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 77 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:59,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 102 transitions. [2022-11-03 01:51:59,965 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 102 transitions. Word has length 11 [2022-11-03 01:51:59,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:51:59,966 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 102 transitions. [2022-11-03 01:51:59,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:51:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 102 transitions. [2022-11-03 01:51:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 01:51:59,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:51:59,967 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:52:00,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:00,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:00,181 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:00,182 INFO L85 PathProgramCache]: Analyzing trace with hash -974279381, now seen corresponding path program 1 times [2022-11-03 01:52:00,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:00,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717505208] [2022-11-03 01:52:00,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:00,278 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717505208] [2022-11-03 01:52:00,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717505208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:00,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789032795] [2022-11-03 01:52:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:00,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:00,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:00,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:00,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:52:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:00,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:52:00,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:00,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:00,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789032795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:00,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [910056614] [2022-11-03 01:52:00,423 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-03 01:52:00,424 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:00,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:00,424 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:00,424 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:00,553 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:00,731 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '694#(and (< (+ 2147483649 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:00,732 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:00,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:00,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-03 01:52:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651317798] [2022-11-03 01:52:00,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:00,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:52:00,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:00,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:52:00,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:52:00,734 INFO L87 Difference]: Start difference. First operand 78 states and 102 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:00,780 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-11-03 01:52:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:52:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 01:52:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:00,782 INFO L225 Difference]: With dead ends: 134 [2022-11-03 01:52:00,782 INFO L226 Difference]: Without dead ends: 132 [2022-11-03 01:52:00,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:52:00,784 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:00,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 19 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:52:00,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-03 01:52:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2022-11-03 01:52:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.351063829787234) internal successors, (127), 97 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2022-11-03 01:52:00,801 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 12 [2022-11-03 01:52:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:00,802 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2022-11-03 01:52:00,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:00,802 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2022-11-03 01:52:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:52:00,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:00,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 01:52:00,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:01,029 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1429056119, now seen corresponding path program 1 times [2022-11-03 01:52:01,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:01,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350660106] [2022-11-03 01:52:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:01,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:01,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:01,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350660106] [2022-11-03 01:52:01,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350660106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:01,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656600017] [2022-11-03 01:52:01,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:01,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:01,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:01,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:01,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:52:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:01,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:52:01,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:01,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:01,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:01,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656600017] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:01,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [981738019] [2022-11-03 01:52:01,230 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:01,230 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:01,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:01,231 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:01,231 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:01,401 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:01,707 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1041#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:01,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:01,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:01,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-03 01:52:01,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786443721] [2022-11-03 01:52:01,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:52:01,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:01,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:52:01,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:52:01,710 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:01,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:01,756 INFO L93 Difference]: Finished difference Result 206 states and 267 transitions. [2022-11-03 01:52:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:52:01,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 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) Word has length 13 [2022-11-03 01:52:01,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:01,759 INFO L225 Difference]: With dead ends: 206 [2022-11-03 01:52:01,759 INFO L226 Difference]: Without dead ends: 205 [2022-11-03 01:52:01,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:52:01,761 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:01,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 42 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:52:01,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-03 01:52:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2022-11-03 01:52:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.2412060301507537) internal successors, (247), 202 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) [2022-11-03 01:52:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 247 transitions. [2022-11-03 01:52:01,789 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 247 transitions. Word has length 13 [2022-11-03 01:52:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:01,790 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 247 transitions. [2022-11-03 01:52:01,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 247 transitions. [2022-11-03 01:52:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:52:01,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:01,791 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1] [2022-11-03 01:52:01,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:02,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:02,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:02,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash -385077154, now seen corresponding path program 1 times [2022-11-03 01:52:02,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:02,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93199351] [2022-11-03 01:52:02,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:02,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:02,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:02,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93199351] [2022-11-03 01:52:02,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93199351] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954354178] [2022-11-03 01:52:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:02,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:02,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:02,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:52:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:02,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 01:52:02,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:02,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:02,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954354178] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:02,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [98159482] [2022-11-03 01:52:02,293 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:02,294 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:02,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:02,294 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:02,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:02,428 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:02,608 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1620#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:02,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:02,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:02,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-03 01:52:02,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351881835] [2022-11-03 01:52:02,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:02,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:52:02,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:02,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:52:02,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:52:02,612 INFO L87 Difference]: Start difference. First operand 203 states and 247 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 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) [2022-11-03 01:52:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:02,715 INFO L93 Difference]: Finished difference Result 398 states and 514 transitions. [2022-11-03 01:52:02,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:52:02,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 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) Word has length 18 [2022-11-03 01:52:02,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:02,719 INFO L225 Difference]: With dead ends: 398 [2022-11-03 01:52:02,719 INFO L226 Difference]: Without dead ends: 397 [2022-11-03 01:52:02,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-03 01:52:02,721 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:02,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-03 01:52:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 329. [2022-11-03 01:52:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 325 states have (on average 1.2769230769230768) internal successors, (415), 328 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 415 transitions. [2022-11-03 01:52:02,772 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 415 transitions. Word has length 18 [2022-11-03 01:52:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:02,772 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 415 transitions. [2022-11-03 01:52:02,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 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) [2022-11-03 01:52:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 415 transitions. [2022-11-03 01:52:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-03 01:52:02,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:02,775 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2022-11-03 01:52:02,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:02,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:02,993 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:02,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:02,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2043316153, now seen corresponding path program 2 times [2022-11-03 01:52:02,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:02,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460883969] [2022-11-03 01:52:02,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:02,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:03,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:03,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460883969] [2022-11-03 01:52:03,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460883969] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:03,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31688288] [2022-11-03 01:52:03,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:52:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:03,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:03,089 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:03,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:52:03,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 01:52:03,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:03,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 01:52:03,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:03,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:03,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31688288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [366778720] [2022-11-03 01:52:03,328 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:03,328 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:03,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:03,329 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:03,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:03,476 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:03,739 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2629#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:03,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:03,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:03,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-03 01:52:03,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487446470] [2022-11-03 01:52:03,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:03,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:52:03,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:03,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:52:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:52:03,742 INFO L87 Difference]: Start difference. First operand 329 states and 415 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:03,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:03,875 INFO L93 Difference]: Finished difference Result 870 states and 1194 transitions. [2022-11-03 01:52:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 01:52:03,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 29 [2022-11-03 01:52:03,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:03,880 INFO L225 Difference]: With dead ends: 870 [2022-11-03 01:52:03,880 INFO L226 Difference]: Without dead ends: 868 [2022-11-03 01:52:03,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:52:03,884 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 83 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:03,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 76 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:52:03,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-11-03 01:52:03,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 572. [2022-11-03 01:52:03,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 568 states have (on average 1.2869718309859155) internal successors, (731), 571 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 731 transitions. [2022-11-03 01:52:03,911 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 731 transitions. Word has length 29 [2022-11-03 01:52:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:03,911 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 731 transitions. [2022-11-03 01:52:03,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 731 transitions. [2022-11-03 01:52:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:52:03,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:03,914 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-11-03 01:52:03,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:04,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 01:52:04,137 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)] === [2022-11-03 01:52:04,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:04,138 INFO L85 PathProgramCache]: Analyzing trace with hash 826770402, now seen corresponding path program 2 times [2022-11-03 01:52:04,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:04,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226396752] [2022-11-03 01:52:04,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:04,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:04,190 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:04,190 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:04,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226396752] [2022-11-03 01:52:04,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226396752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:04,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233734439] [2022-11-03 01:52:04,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:52:04,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:04,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:04,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:04,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:52:04,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 01:52:04,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:04,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:52:04,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:04,283 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:04,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:04,342 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 01:52:04,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233734439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:04,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [499261295] [2022-11-03 01:52:04,346 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:04,347 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:04,347 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:04,347 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:04,347 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:04,494 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:04,733 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4456#(and (<= 1 |ULTIMATE.start_main_~a~0#1|) (< 2147483646 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:04,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:04,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:04,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2022-11-03 01:52:04,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470433685] [2022-11-03 01:52:04,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:04,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:52:04,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:52:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:52:04,735 INFO L87 Difference]: Start difference. First operand 572 states and 731 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2022-11-03 01:52:04,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:04,768 INFO L93 Difference]: Finished difference Result 572 states and 731 transitions. [2022-11-03 01:52:04,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:52:04,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 31 [2022-11-03 01:52:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:04,771 INFO L225 Difference]: With dead ends: 572 [2022-11-03 01:52:04,772 INFO L226 Difference]: Without dead ends: 571 [2022-11-03 01:52:04,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2022-11-03 01:52:04,773 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:04,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:52:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-03 01:52:04,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 456. [2022-11-03 01:52:04,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 453 states have (on average 1.1898454746136866) internal successors, (539), 455 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 539 transitions. [2022-11-03 01:52:04,794 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 539 transitions. Word has length 31 [2022-11-03 01:52:04,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:04,796 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 539 transitions. [2022-11-03 01:52:04,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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) [2022-11-03 01:52:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 539 transitions. [2022-11-03 01:52:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 01:52:04,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:04,802 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1] [2022-11-03 01:52:04,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:05,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:05,017 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash 435226258, now seen corresponding path program 2 times [2022-11-03 01:52:05,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:05,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290338636] [2022-11-03 01:52:05,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:05,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290338636] [2022-11-03 01:52:05,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290338636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124254423] [2022-11-03 01:52:05,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:52:05,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:05,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:05,155 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:05,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 01:52:05,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-03 01:52:05,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:05,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 01:52:05,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:05,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:05,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124254423] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:05,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1381760159] [2022-11-03 01:52:05,479 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:05,479 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:05,480 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:05,480 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:05,480 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:05,559 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:05,747 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5899#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:05,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:05,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:05,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-11-03 01:52:05,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542478658] [2022-11-03 01:52:05,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:05,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 01:52:05,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:05,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 01:52:05,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:52:05,750 INFO L87 Difference]: Start difference. First operand 456 states and 539 transitions. Second operand has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:05,975 INFO L93 Difference]: Finished difference Result 1648 states and 2019 transitions. [2022-11-03 01:52:05,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 01:52:05,976 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-03 01:52:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:05,982 INFO L225 Difference]: With dead ends: 1648 [2022-11-03 01:52:05,982 INFO L226 Difference]: Without dead ends: 1647 [2022-11-03 01:52:05,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-03 01:52:05,984 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 100 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:05,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 77 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:52:05,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1647 states. [2022-11-03 01:52:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1647 to 902. [2022-11-03 01:52:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 899 states have (on average 1.1802002224694104) internal successors, (1061), 901 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1061 transitions. [2022-11-03 01:52:06,037 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1061 transitions. Word has length 42 [2022-11-03 01:52:06,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:06,038 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1061 transitions. [2022-11-03 01:52:06,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.533333333333333) internal successors, (83), 16 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1061 transitions. [2022-11-03 01:52:06,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 01:52:06,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:06,040 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1] [2022-11-03 01:52:06,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:06,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 01:52:06,249 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:06,250 INFO L85 PathProgramCache]: Analyzing trace with hash 84797903, now seen corresponding path program 3 times [2022-11-03 01:52:06,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:06,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786808414] [2022-11-03 01:52:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:06,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:06,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786808414] [2022-11-03 01:52:06,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786808414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:06,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057102048] [2022-11-03 01:52:06,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:52:06,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:06,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:06,522 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:06,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 01:52:06,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:52:06,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:06,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 01:52:06,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:06,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:07,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057102048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [597683943] [2022-11-03 01:52:07,137 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:07,138 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:07,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:07,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:07,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:07,239 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:07,524 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9211#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:07,524 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:07,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:07,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-03 01:52:07,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771282896] [2022-11-03 01:52:07,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:07,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 01:52:07,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:07,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 01:52:07,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:52:07,527 INFO L87 Difference]: Start difference. First operand 902 states and 1061 transitions. Second operand has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:07,863 INFO L93 Difference]: Finished difference Result 4198 states and 5263 transitions. [2022-11-03 01:52:07,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 01:52:07,864 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 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 65 [2022-11-03 01:52:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:07,876 INFO L225 Difference]: With dead ends: 4198 [2022-11-03 01:52:07,876 INFO L226 Difference]: Without dead ends: 4196 [2022-11-03 01:52:07,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2022-11-03 01:52:07,879 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 157 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:07,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 120 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:52:07,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2022-11-03 01:52:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 1944. [2022-11-03 01:52:07,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1944 states, 1941 states have (on average 1.1597114889232354) internal successors, (2251), 1943 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2251 transitions. [2022-11-03 01:52:07,984 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2251 transitions. Word has length 65 [2022-11-03 01:52:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 1944 states and 2251 transitions. [2022-11-03 01:52:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.608695652173913) internal successors, (129), 24 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2251 transitions. [2022-11-03 01:52:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 01:52:07,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:07,987 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1] [2022-11-03 01:52:08,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:08,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:08,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:08,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1620549370, now seen corresponding path program 3 times [2022-11-03 01:52:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:08,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356744398] [2022-11-03 01:52:08,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:08,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:08,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356744398] [2022-11-03 01:52:08,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356744398] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:08,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766586877] [2022-11-03 01:52:08,603 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 01:52:08,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:08,605 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:08,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 01:52:08,667 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 01:52:08,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:08,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 01:52:08,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:08,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:09,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766586877] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:09,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [171409850] [2022-11-03 01:52:09,401 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:09,401 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:09,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:09,402 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:09,402 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:09,460 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:09,694 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16750#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:09,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:09,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:09,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2022-11-03 01:52:09,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801890111] [2022-11-03 01:52:09,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:09,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 01:52:09,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:09,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 01:52:09,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:52:09,702 INFO L87 Difference]: Start difference. First operand 1944 states and 2251 transitions. Second operand has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:10,402 INFO L93 Difference]: Finished difference Result 9842 states and 11725 transitions. [2022-11-03 01:52:10,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:52:10,403 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 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 90 [2022-11-03 01:52:10,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:10,433 INFO L225 Difference]: With dead ends: 9842 [2022-11-03 01:52:10,433 INFO L226 Difference]: Without dead ends: 9841 [2022-11-03 01:52:10,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=522, Invalid=960, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:52:10,440 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 222 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:10,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 157 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:52:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9841 states. [2022-11-03 01:52:10,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9841 to 3730. [2022-11-03 01:52:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 3727 states have (on average 1.1540112691172524) internal successors, (4301), 3729 states have internal predecessors, (4301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4301 transitions. [2022-11-03 01:52:10,781 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4301 transitions. Word has length 90 [2022-11-03 01:52:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:10,781 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 4301 transitions. [2022-11-03 01:52:10,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.774193548387097) internal successors, (179), 32 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4301 transitions. [2022-11-03 01:52:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-03 01:52:10,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:10,786 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1] [2022-11-03 01:52:10,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:11,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-03 01:52:11,009 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:11,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:11,010 INFO L85 PathProgramCache]: Analyzing trace with hash 65778939, now seen corresponding path program 4 times [2022-11-03 01:52:11,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:11,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154139245] [2022-11-03 01:52:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:11,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:11,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:11,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154139245] [2022-11-03 01:52:11,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154139245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:11,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433621355] [2022-11-03 01:52:11,718 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 01:52:11,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:11,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:11,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:11,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:52:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:11,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 01:52:11,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:12,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:12,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433621355] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:12,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1556166252] [2022-11-03 01:52:12,983 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:12,984 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:12,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:12,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:12,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:13,097 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:13,500 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32978#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:13,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:13,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:13,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-03 01:52:13,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777078215] [2022-11-03 01:52:13,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:13,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-03 01:52:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-03 01:52:13,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 01:52:13,506 INFO L87 Difference]: Start difference. First operand 3730 states and 4301 transitions. Second operand has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:14,997 INFO L93 Difference]: Finished difference Result 26438 states and 31923 transitions. [2022-11-03 01:52:14,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 01:52:14,998 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 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 137 [2022-11-03 01:52:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:15,072 INFO L225 Difference]: With dead ends: 26438 [2022-11-03 01:52:15,073 INFO L226 Difference]: Without dead ends: 26436 [2022-11-03 01:52:15,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1162, Invalid=1918, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 01:52:15,086 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 470 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 271 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:15,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 240 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [271 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:52:15,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26436 states. [2022-11-03 01:52:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26436 to 7992. [2022-11-03 01:52:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7992 states, 7989 states have (on average 1.142946551508324) internal successors, (9131), 7991 states have internal predecessors, (9131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7992 states to 7992 states and 9131 transitions. [2022-11-03 01:52:15,833 INFO L78 Accepts]: Start accepts. Automaton has 7992 states and 9131 transitions. Word has length 137 [2022-11-03 01:52:15,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:15,833 INFO L495 AbstractCegarLoop]: Abstraction has 7992 states and 9131 transitions. [2022-11-03 01:52:15,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.808510638297872) internal successors, (273), 48 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:15,834 INFO L276 IsEmpty]: Start isEmpty. Operand 7992 states and 9131 transitions. [2022-11-03 01:52:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-03 01:52:15,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:15,841 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1] [2022-11-03 01:52:15,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:16,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 01:52:16,061 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 780697546, now seen corresponding path program 4 times [2022-11-03 01:52:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:16,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183703903] [2022-11-03 01:52:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:17,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:17,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183703903] [2022-11-03 01:52:17,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183703903] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218442113] [2022-11-03 01:52:17,509 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 01:52:17,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:17,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:17,514 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:17,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 01:52:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:17,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-03 01:52:17,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:17,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:19,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218442113] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019895326] [2022-11-03 01:52:19,685 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:19,685 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:19,685 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:19,685 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:19,686 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:19,731 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:19,966 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '73075#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:19,966 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:19,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2022-11-03 01:52:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257333325] [2022-11-03 01:52:19,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-03 01:52:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:19,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-03 01:52:19,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 01:52:19,972 INFO L87 Difference]: Start difference. First operand 7992 states and 9131 transitions. Second operand has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:23,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:23,760 INFO L93 Difference]: Finished difference Result 65014 states and 75717 transitions. [2022-11-03 01:52:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-03 01:52:23,760 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 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 186 [2022-11-03 01:52:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:23,987 INFO L225 Difference]: With dead ends: 65014 [2022-11-03 01:52:23,987 INFO L226 Difference]: Without dead ends: 65013 [2022-11-03 01:52:24,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 519 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2042, Invalid=2928, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 01:52:24,037 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 592 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:24,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 317 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 01:52:24,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65013 states. [2022-11-03 01:52:25,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65013 to 15146. [2022-11-03 01:52:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15146 states, 15143 states have (on average 1.139866605032028) internal successors, (17261), 15145 states have internal predecessors, (17261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15146 states to 15146 states and 17261 transitions. [2022-11-03 01:52:25,860 INFO L78 Accepts]: Start accepts. Automaton has 15146 states and 17261 transitions. Word has length 186 [2022-11-03 01:52:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:25,860 INFO L495 AbstractCegarLoop]: Abstraction has 15146 states and 17261 transitions. [2022-11-03 01:52:25,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.888888888888889) internal successors, (371), 64 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 15146 states and 17261 transitions. [2022-11-03 01:52:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-03 01:52:25,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:25,874 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1] [2022-11-03 01:52:25,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 01:52:26,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 01:52:26,097 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)] === [2022-11-03 01:52:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:26,098 INFO L85 PathProgramCache]: Analyzing trace with hash 465397587, now seen corresponding path program 5 times [2022-11-03 01:52:26,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:26,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347996745] [2022-11-03 01:52:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:26,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:28,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:28,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347996745] [2022-11-03 01:52:28,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347996745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:28,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271510948] [2022-11-03 01:52:28,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:52:28,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:28,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:28,530 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:28,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 01:52:28,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-03 01:52:28,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:28,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 01:52:28,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:29,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:32,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271510948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344991427] [2022-11-03 01:52:32,331 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:32,331 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:32,331 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:32,331 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:32,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:32,443 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:32,895 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '165331#(and (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~a~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:32,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:32,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:32,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-03 01:52:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081252689] [2022-11-03 01:52:32,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:32,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-03 01:52:32,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-03 01:52:32,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2022-11-03 01:52:32,903 INFO L87 Difference]: Start difference. First operand 15146 states and 17261 transitions. Second operand has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:52:41,921 INFO L93 Difference]: Finished difference Result 182334 states and 213859 transitions. [2022-11-03 01:52:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-03 01:52:41,922 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 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 281 [2022-11-03 01:52:41,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:52:42,223 INFO L225 Difference]: With dead ends: 182334 [2022-11-03 01:52:42,223 INFO L226 Difference]: Without dead ends: 182332 [2022-11-03 01:52:42,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4594, Invalid=6118, Unknown=0, NotChecked=0, Total=10712 [2022-11-03 01:52:42,274 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 886 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 886 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:52:42,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [886 Valid, 480 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 01:52:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182332 states. [2022-11-03 01:52:46,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182332 to 32376. [2022-11-03 01:52:46,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32376 states, 32373 states have (on average 1.134124115775492) internal successors, (36715), 32375 states have internal predecessors, (36715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32376 states to 32376 states and 36715 transitions. [2022-11-03 01:52:46,551 INFO L78 Accepts]: Start accepts. Automaton has 32376 states and 36715 transitions. Word has length 281 [2022-11-03 01:52:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:52:46,552 INFO L495 AbstractCegarLoop]: Abstraction has 32376 states and 36715 transitions. [2022-11-03 01:52:46,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.905263157894737) internal successors, (561), 96 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:52:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 32376 states and 36715 transitions. [2022-11-03 01:52:46,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-11-03 01:52:46,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:52:46,593 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 62, 62, 62, 1, 1, 1] [2022-11-03 01:52:46,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-03 01:52:46,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 01:52:46,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 01:52:46,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:52:46,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1450770794, now seen corresponding path program 5 times [2022-11-03 01:52:46,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:52:46,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990421354] [2022-11-03 01:52:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:52:46,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:52:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:52:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:51,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:52:51,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990421354] [2022-11-03 01:52:51,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990421354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:52:51,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527123318] [2022-11-03 01:52:51,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:52:51,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:52:51,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:52:51,161 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:52:51,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5031e626-23da-4e42-a09e-c86ec093638a/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 01:52:51,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2022-11-03 01:52:51,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:52:51,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-03 01:52:51,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:52:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:51,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:52:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 11594 backedges. 0 proven. 11594 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:52:57,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527123318] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:52:57,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2083974078] [2022-11-03 01:52:57,493 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-03 01:52:57,493 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:52:57,493 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:52:57,493 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:52:57,494 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:52:57,543 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:52:58,011 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '409912#(and (< (+ 2147483647 |ULTIMATE.start_main_~a~0#1|) 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~max~0#1| 2147483647) (<= 1 |ULTIMATE.start_main_~max~0#1|))' at error location [2022-11-03 01:52:58,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:52:58,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:52:58,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 127 [2022-11-03 01:52:58,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149410525] [2022-11-03 01:52:58,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:52:58,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-03 01:52:58,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:52:58,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-03 01:52:58,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2022-11-03 01:52:58,022 INFO L87 Difference]: Start difference. First operand 32376 states and 36715 transitions. Second operand has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:53:29,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:53:29,398 INFO L93 Difference]: Finished difference Result 464894 states and 533221 transitions. [2022-11-03 01:53:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-03 01:53:29,399 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 5.94488188976378) internal successors, (755), 128 states have internal predecessors, (755), 0 states have call successors, (0), 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 378 [2022-11-03 01:53:29,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:53:30,275 INFO L225 Difference]: With dead ends: 464894 [2022-11-03 01:53:30,275 INFO L226 Difference]: Without dead ends: 464893 [2022-11-03 01:53:30,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1196 GetRequests, 1063 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=8154, Invalid=9936, Unknown=0, NotChecked=0, Total=18090 [2022-11-03 01:53:30,416 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1528 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 2814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2814 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:53:30,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1528 Valid, 637 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2814 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 01:53:30,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464893 states.