./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/Flip2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9 --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 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- 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-6b4ec56 [2022-11-20 18:54:17,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 18:54:17,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 18:54:17,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 18:54:17,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 18:54:17,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 18:54:17,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 18:54:17,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 18:54:17,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 18:54:17,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 18:54:17,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 18:54:17,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 18:54:17,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 18:54:17,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 18:54:17,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 18:54:17,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 18:54:17,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 18:54:17,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 18:54:17,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 18:54:17,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 18:54:17,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 18:54:17,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 18:54:17,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 18:54:17,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 18:54:17,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 18:54:17,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 18:54:17,570 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 18:54:17,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 18:54:17,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 18:54:17,573 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 18:54:17,573 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 18:54:17,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 18:54:17,575 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 18:54:17,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 18:54:17,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 18:54:17,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 18:54:17,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 18:54:17,579 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 18:54:17,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 18:54:17,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 18:54:17,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 18:54:17,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-20 18:54:17,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 18:54:17,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 18:54:17,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 18:54:17,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 18:54:17,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 18:54:17,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 18:54:17,642 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 18:54:17,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 18:54:17,642 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 18:54:17,642 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 18:54:17,644 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 18:54:17,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 18:54:17,644 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 18:54:17,644 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 18:54:17,644 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 18:54:17,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 18:54:17,645 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 18:54:17,645 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 18:54:17,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 18:54:17,646 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 18:54:17,646 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 18:54:17,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 18:54:17,647 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 18:54:17,647 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 18:54:17,647 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 18:54:17,648 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 18:54:17,648 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 18:54:17,648 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 18:54:17,648 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 18:54:17,648 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 18:54:17,649 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 18:54:17,649 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:54:17,649 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 18:54:17,650 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 18:54:17,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 18:54:17,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 18:54:17,650 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 18:54:17,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 18:54:17,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 18:54:17,651 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 18:54:17,652 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_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2022-11-20 18:54:17,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 18:54:18,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 18:54:18,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 18:54:18,011 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 18:54:18,012 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 18:54:18,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-11-20 18:54:21,221 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 18:54:21,498 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 18:54:21,499 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-11-20 18:54:21,505 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/data/9b8a8868d/851ab33de6e347348e7d9e0762ae8e75/FLAG5b6b0731f [2022-11-20 18:54:21,521 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/data/9b8a8868d/851ab33de6e347348e7d9e0762ae8e75 [2022-11-20 18:54:21,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 18:54:21,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 18:54:21,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 18:54:21,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 18:54:21,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 18:54:21,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660ebbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21, skipping insertion in model container [2022-11-20 18:54:21,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 18:54:21,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 18:54:21,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:54:21,727 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 18:54:21,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 18:54:21,748 INFO L208 MainTranslator]: Completed translation [2022-11-20 18:54:21,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21 WrapperNode [2022-11-20 18:54:21,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 18:54:21,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 18:54:21,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 18:54:21,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 18:54:21,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,779 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-20 18:54:21,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 18:54:21,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 18:54:21,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 18:54:21,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 18:54:21,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,794 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 18:54:21,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 18:54:21,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 18:54:21,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 18:54:21,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (1/1) ... [2022-11-20 18:54:21,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 18:54:21,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:54:21,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 18:54:21,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 18:54:21,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 18:54:21,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 18:54:21,999 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 18:54:22,001 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 18:54:22,141 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 18:54:22,175 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 18:54:22,175 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 18:54:22,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:54:22 BoogieIcfgContainer [2022-11-20 18:54:22,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 18:54:22,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 18:54:22,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 18:54:22,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 18:54:22,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:54:21" (1/3) ... [2022-11-20 18:54:22,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43913ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:54:22, skipping insertion in model container [2022-11-20 18:54:22,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:54:21" (2/3) ... [2022-11-20 18:54:22,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43913ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:54:22, skipping insertion in model container [2022-11-20 18:54:22,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:54:22" (3/3) ... [2022-11-20 18:54:22,192 INFO L112 eAbstractionObserver]: Analyzing ICFG Flip2.c [2022-11-20 18:54:22,216 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 18:54:22,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 18:54:22,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 18:54:22,288 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;@591330f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 18:54:22,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 18:54:22,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:22,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 18:54:22,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:54:22,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 18:54:22,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 18:54:22,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:54:22,305 INFO L85 PathProgramCache]: Analyzing trace with hash 61296136, now seen corresponding path program 1 times [2022-11-20 18:54:22,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:54:22,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741998738] [2022-11-20 18:54:22,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:54:22,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:54:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:54:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:54:22,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:54:22,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741998738] [2022-11-20 18:54:22,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741998738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:54:22,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:54:22,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 18:54:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107784392] [2022-11-20 18:54:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:54:22,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 18:54:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:54:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 18:54:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:54:22,523 INFO L87 Difference]: Start difference. First operand has 9 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:22,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:54:22,624 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2022-11-20 18:54:22,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 18:54:22,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 18:54:22,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:54:22,636 INFO L225 Difference]: With dead ends: 16 [2022-11-20 18:54:22,637 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 18:54:22,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:54:22,652 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:54:22,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:54:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 18:54:22,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-20 18:54:22,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:22,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2022-11-20 18:54:22,738 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 5 [2022-11-20 18:54:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:54:22,739 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 18 transitions. [2022-11-20 18:54:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:22,740 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 18 transitions. [2022-11-20 18:54:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 18:54:22,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:54:22,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 18:54:22,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 18:54:22,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 18:54:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:54:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1900180271, now seen corresponding path program 1 times [2022-11-20 18:54:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:54:22,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235793975] [2022-11-20 18:54:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:54:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:54:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:54:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:54:22,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:54:22,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235793975] [2022-11-20 18:54:22,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235793975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:54:22,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:54:22,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 18:54:22,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467812588] [2022-11-20 18:54:22,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:54:22,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 18:54:22,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:54:22,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 18:54:22,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:54:22,822 INFO L87 Difference]: Start difference. First operand 13 states and 18 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) [2022-11-20 18:54:22,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:54:22,845 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-20 18:54:22,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 18:54:22,846 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 [2022-11-20 18:54:22,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:54:22,847 INFO L225 Difference]: With dead ends: 15 [2022-11-20 18:54:22,847 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 18:54:22,848 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 [2022-11-20 18:54:22,849 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:54:22,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 18:54:22,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 18:54:22,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-20 18:54:22,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:22,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-11-20 18:54:22,854 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 6 [2022-11-20 18:54:22,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:54:22,855 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-11-20 18:54:22,855 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) [2022-11-20 18:54:22,855 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2022-11-20 18:54:22,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 18:54:22,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:54:22,856 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-20 18:54:22,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 18:54:22,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 18:54:22,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:54:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1226105493, now seen corresponding path program 1 times [2022-11-20 18:54:22,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:54:22,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086683038] [2022-11-20 18:54:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:54:22,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:54:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:54:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:54:22,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:54:22,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086683038] [2022-11-20 18:54:23,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086683038] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 18:54:23,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151976421] [2022-11-20 18:54:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:54:23,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:54:23,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:54:23,005 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:54:23,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 18:54:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:54:23,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 18:54:23,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:54:23,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:54:23,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:54:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:54:23,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151976421] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:54:23,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1432024302] [2022-11-20 18:54:23,223 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-20 18:54:23,224 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 18:54:23,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 18:54:23,237 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 18:54:23,238 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 18:54:23,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 18:54:23,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1432024302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:54:23,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:54:23,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [2, 2, 2] total 8 [2022-11-20 18:54:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692758413] [2022-11-20 18:54:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:54:23,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 18:54:23,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:54:23,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 18:54:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-20 18:54:23,833 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-20 18:54:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:54:23,908 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2022-11-20 18:54:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 18:54:23,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 7 [2022-11-20 18:54:23,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:54:23,910 INFO L225 Difference]: With dead ends: 30 [2022-11-20 18:54:23,910 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 18:54:23,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-20 18:54:23,913 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 18:54:23,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 18:54:23,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 18:54:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 18:54:23,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:23,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2022-11-20 18:54:23,922 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 7 [2022-11-20 18:54:23,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:54:23,923 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2022-11-20 18:54:23,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-20 18:54:23,923 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2022-11-20 18:54:23,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 18:54:23,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:54:23,924 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-20 18:54:23,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 18:54:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:54:24,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 18:54:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:54:24,133 INFO L85 PathProgramCache]: Analyzing trace with hash -661063307, now seen corresponding path program 1 times [2022-11-20 18:54:24,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:54:24,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188436210] [2022-11-20 18:54:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:54:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:54:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:54:24,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 18:54:24,172 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:54:24,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188436210] [2022-11-20 18:54:24,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188436210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:54:24,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 18:54:24,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 18:54:24,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696131486] [2022-11-20 18:54:24,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:54:24,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 18:54:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:54:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 18:54:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:54:24,176 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:54:24,196 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-11-20 18:54:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 18:54:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 18:54:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:54:24,198 INFO L225 Difference]: With dead ends: 34 [2022-11-20 18:54:24,198 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 18:54:24,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 18:54:24,200 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:54:24,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 18:54:24,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 18:54:24,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-20 18:54:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 27 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2022-11-20 18:54:24,208 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 10 [2022-11-20 18:54:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:54:24,208 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2022-11-20 18:54:24,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2022-11-20 18:54:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 18:54:24,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 18:54:24,210 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2022-11-20 18:54:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 18:54:24,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-20 18:54:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 18:54:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1785951823, now seen corresponding path program 2 times [2022-11-20 18:54:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 18:54:24,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134731461] [2022-11-20 18:54:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 18:54:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 18:54:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 18:54:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 18:54:24,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 18:54:24,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134731461] [2022-11-20 18:54:24,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134731461] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 18:54:24,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239618275] [2022-11-20 18:54:24,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 18:54:24,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:54:24,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 18:54:24,285 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 18:54:24,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 18:54:24,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 18:54:24,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 18:54:24,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 18:54:24,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 18:54:24,352 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 18:54:24,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 18:54:24,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 18:54:24,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239618275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 18:54:24,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311431475] [2022-11-20 18:54:24,387 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-20 18:54:24,387 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 18:54:24,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 18:54:24,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 18:54:24,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 18:54:24,476 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 18:54:24,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [311431475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 18:54:24,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 18:54:24,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [2, 2, 2] total 8 [2022-11-20 18:54:24,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499874287] [2022-11-20 18:54:24,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 18:54:24,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 18:54:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 18:54:24,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 18:54:24,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-20 18:54:24,569 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:24,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 18:54:24,616 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2022-11-20 18:54:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 18:54:24,617 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 18:54:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 18:54:24,618 INFO L225 Difference]: With dead ends: 46 [2022-11-20 18:54:24,618 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 18:54:24,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=49, Unknown=0, NotChecked=0, Total=90 [2022-11-20 18:54:24,620 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 18:54:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 18:54:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 18:54:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 18:54:24,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 18:54:24,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2022-11-20 18:54:24,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 18:54:24,623 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 18:54:24,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 18:54:24,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 18:54:24,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 18:54:24,627 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2022-11-20 18:54:24,628 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2022-11-20 18:54:24,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 18:54:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 18:54:24,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 18:54:24,936 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-20 18:54:24,936 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 18:54:24,936 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 23) no Hoare annotation was computed. [2022-11-20 18:54:24,937 INFO L895 garLoopResultBuilder]: At program point L19-2(lines 13 25) the Hoare annotation is: (and (<= 0 (+ |ULTIMATE.start_main_~j~0#1| 2147483648)) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~t~0#1|) (<= 0 (+ |ULTIMATE.start_main_~i~0#1| 2147483648)) (<= |ULTIMATE.start_main_~j~0#1| 2147483647)) [2022-11-20 18:54:24,937 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2022-11-20 18:54:24,937 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 18:54:24,938 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2022-11-20 18:54:24,938 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 18:54:24,938 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 24) no Hoare annotation was computed. [2022-11-20 18:54:24,945 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-11-20 18:54:24,948 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 18:54:24,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:54:24 BoogieIcfgContainer [2022-11-20 18:54:24,970 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 18:54:24,971 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 18:54:24,971 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 18:54:24,971 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 18:54:24,972 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:54:22" (3/4) ... [2022-11-20 18:54:24,976 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 18:54:24,986 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 18:54:24,987 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 18:54:24,987 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 18:54:25,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 18:54:25,027 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 18:54:25,028 INFO L158 Benchmark]: Toolchain (without parser) took 3497.99ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 105.2MB in the beginning and 102.5MB in the end (delta: 2.7MB). Peak memory consumption was 40.6MB. Max. memory is 16.1GB. [2022-11-20 18:54:25,028 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:54:25,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.91ms. Allocated memory is still 134.2MB. Free memory was 104.8MB in the beginning and 95.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 18:54:25,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.55ms. Allocated memory is still 134.2MB. Free memory was 95.5MB in the beginning and 94.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:54:25,030 INFO L158 Benchmark]: Boogie Preprocessor took 23.19ms. Allocated memory is still 134.2MB. Free memory was 94.3MB in the beginning and 93.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 18:54:25,030 INFO L158 Benchmark]: RCFGBuilder took 372.11ms. Allocated memory is still 134.2MB. Free memory was 93.3MB in the beginning and 82.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 18:54:25,031 INFO L158 Benchmark]: TraceAbstraction took 2789.77ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 82.2MB in the beginning and 104.6MB in the end (delta: -22.4MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. [2022-11-20 18:54:25,032 INFO L158 Benchmark]: Witness Printer took 56.54ms. Allocated memory is still 169.9MB. Free memory was 104.6MB in the beginning and 102.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 18:54:25,035 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 63.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.91ms. Allocated memory is still 134.2MB. Free memory was 104.8MB in the beginning and 95.9MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.55ms. Allocated memory is still 134.2MB. Free memory was 95.5MB in the beginning and 94.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.19ms. Allocated memory is still 134.2MB. Free memory was 94.3MB in the beginning and 93.3MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 372.11ms. Allocated memory is still 134.2MB. Free memory was 93.3MB in the beginning and 82.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2789.77ms. Allocated memory was 134.2MB in the beginning and 169.9MB in the end (delta: 35.7MB). Free memory was 82.2MB in the beginning and 104.6MB in the end (delta: -22.4MB). Peak memory consumption was 15.4MB. Max. memory is 16.1GB. * Witness Printer took 56.54ms. Allocated memory is still 169.9MB. Free memory was 104.6MB in the beginning and 102.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 6 mSDtfsCounter, 103 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 9 NumberOfFragments, 20 HoareAnnotationTreeSize, 1 FomulaSimplifications, 99 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 16/34 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 12, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 25, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.0s, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.0s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 25, TOOLS_QUANTIFIERELIM_TIME: 0.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 51, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 5, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 12, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 4, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 88, DAG_COMPRESSION_RETAINED_NODES: 44, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (((0 <= j + 2147483648 && i <= 2147483647) && 0 <= t) && 0 <= i + 2147483648) && j <= 2147483647 RESULT: Ultimate proved your program to be correct! [2022-11-20 18:54:25,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_631fdd6a-d29c-40bd-94ea-ff227c7a39ea/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE