./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0232_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0232_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f7b1141c3157e34a4974729c197a93a4b99ad75fc020122df5d99d43bcc85e27 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:28:48,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:28:48,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:28:48,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:28:48,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:28:48,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:28:48,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:28:48,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:28:48,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:28:48,512 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:28:48,513 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:28:48,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:28:48,515 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:28:48,516 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:28:48,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:28:48,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:28:48,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:28:48,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:28:48,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:28:48,523 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:28:48,525 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:28:48,526 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:28:48,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:28:48,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:28:48,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:28:48,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:28:48,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:28:48,534 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:28:48,534 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:28:48,535 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:28:48,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:28:48,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:28:48,537 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:28:48,538 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:28:48,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:28:48,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:28:48,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:28:48,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:28:48,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:28:48,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:28:48,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:28:48,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 09:28:48,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:28:48,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:28:48,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:28:48,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:28:48,565 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:28:48,565 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:28:48,566 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:28:48,566 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:28:48,566 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:28:48,566 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:28:48,566 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:28:48,567 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:28:48,567 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:28:48,567 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:28:48,567 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:28:48,568 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:28:48,568 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:28:48,568 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:28:48,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:28:48,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:28:48,569 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 09:28:48,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:28:48,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:28:48,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:28:48,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:28:48,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:28:48,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:28:48,570 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 09:28:48,571 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:28:48,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:28:48,571 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:28:48,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:28:48,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:28:48,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:28:48,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:28:48,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:28:48,572 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:28:48,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:28:48,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:28:48,573 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:28:48,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:28:48,573 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:28:48,573 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:28:48,573 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_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7b1141c3157e34a4974729c197a93a4b99ad75fc020122df5d99d43bcc85e27 [2022-12-14 09:28:48,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:28:48,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:28:48,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:28:48,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:28:48,809 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:28:48,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-ext-properties/test-0232_1-2.i [2022-12-14 09:28:51,337 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:28:51,545 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:28:51,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/sv-benchmarks/c/list-ext-properties/test-0232_1-2.i [2022-12-14 09:28:51,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/data/18fc13214/85b0b0d44986425f80d3d86804a39dea/FLAG5c3482512 [2022-12-14 09:28:51,911 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/data/18fc13214/85b0b0d44986425f80d3d86804a39dea [2022-12-14 09:28:51,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:28:51,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:28:51,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:28:51,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:28:51,918 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:28:51,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:28:51" (1/1) ... [2022-12-14 09:28:51,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ad26ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:51, skipping insertion in model container [2022-12-14 09:28:51,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:28:51" (1/1) ... [2022-12-14 09:28:51,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:28:51,953 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:28:52,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:28:52,163 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:28:52,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:28:52,205 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:28:52,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52 WrapperNode [2022-12-14 09:28:52,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:28:52,206 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:28:52,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:28:52,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:28:52,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,233 INFO L138 Inliner]: procedures = 126, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 96 [2022-12-14 09:28:52,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:28:52,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:28:52,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:28:52,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:28:52,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,249 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:28:52,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:28:52,252 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:28:52,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:28:52,253 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (1/1) ... [2022-12-14 09:28:52,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:28:52,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:28:52,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:28:52,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:28:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 09:28:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:28:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 09:28:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 09:28:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 09:28:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 09:28:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 09:28:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:28:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:28:52,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:28:52,390 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:28:52,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:28:52,530 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:28:52,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:28:52,588 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 09:28:52,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:28:52 BoogieIcfgContainer [2022-12-14 09:28:52,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:28:52,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:28:52,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:28:52,595 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:28:52,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:28:51" (1/3) ... [2022-12-14 09:28:52,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcd00e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:28:52, skipping insertion in model container [2022-12-14 09:28:52,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:28:52" (2/3) ... [2022-12-14 09:28:52,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bcd00e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:28:52, skipping insertion in model container [2022-12-14 09:28:52,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:28:52" (3/3) ... [2022-12-14 09:28:52,597 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0232_1-2.i [2022-12-14 09:28:52,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:28:52,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-12-14 09:28:52,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:28:52,648 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;@6ee19fd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:28:52,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-12-14 09:28:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 21 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) [2022-12-14 09:28:52,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 09:28:52,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:52,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 09:28:52,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:52,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:52,661 INFO L85 PathProgramCache]: Analyzing trace with hash 92449, now seen corresponding path program 1 times [2022-12-14 09:28:52,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:52,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423530052] [2022-12-14 09:28:52,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:52,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:52,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:52,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:52,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423530052] [2022-12-14 09:28:52,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423530052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:52,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:52,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:28:52,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834398113] [2022-12-14 09:28:52,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:52,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:28:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:52,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:28:52,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:28:52,882 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:52,949 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-12-14 09:28:52,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:28:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 09:28:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:52,956 INFO L225 Difference]: With dead ends: 38 [2022-12-14 09:28:52,956 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 09:28:52,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:28:52,961 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:52,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 09:28:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 09:28:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:52,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-12-14 09:28:52,982 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 3 [2022-12-14 09:28:52,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:52,983 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-12-14 09:28:52,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:52,983 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-12-14 09:28:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 09:28:52,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:52,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 09:28:52,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 09:28:52,983 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash 88846640, now seen corresponding path program 1 times [2022-12-14 09:28:52,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:52,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597791666] [2022-12-14 09:28:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:52,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:53,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:53,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:53,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597791666] [2022-12-14 09:28:53,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597791666] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:53,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:53,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:28:53,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931156742] [2022-12-14 09:28:53,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:53,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:28:53,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:53,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:28:53,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:28:53,110 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:53,153 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-12-14 09:28:53,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:28:53,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 09:28:53,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:53,154 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:28:53,154 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 09:28:53,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:28:53,156 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:53,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 51 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 09:28:53,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 09:28:53,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 25 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) [2022-12-14 09:28:53,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-14 09:28:53,161 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 5 [2022-12-14 09:28:53,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:53,161 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-14 09:28:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,162 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-14 09:28:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:28:53,162 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:53,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:53,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 09:28:53,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash 685514444, now seen corresponding path program 1 times [2022-12-14 09:28:53,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:53,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795021248] [2022-12-14 09:28:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:53,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:53,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795021248] [2022-12-14 09:28:53,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795021248] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:53,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:53,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:28:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133657580] [2022-12-14 09:28:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:28:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:28:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:28:53,251 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:53,279 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-12-14 09:28:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:28:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 09:28:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:53,280 INFO L225 Difference]: With dead ends: 26 [2022-12-14 09:28:53,280 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 09:28:53,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:28:53,282 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:53,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 31 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:53,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 09:28:53,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 09:28:53,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.5) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-12-14 09:28:53,287 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 9 [2022-12-14 09:28:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:53,287 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-12-14 09:28:53,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-12-14 09:28:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:28:53,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:53,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 09:28:53,289 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash 685515406, now seen corresponding path program 1 times [2022-12-14 09:28:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:53,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098509635] [2022-12-14 09:28:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:53,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:53,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:53,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098509635] [2022-12-14 09:28:53,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098509635] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:28:53,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839130466] [2022-12-14 09:28:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:53,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:28:53,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:28:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:28:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:53,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:28:53,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:28:53,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:53,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:28:53,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839130466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:53,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:28:53,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-14 09:28:53,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039034863] [2022-12-14 09:28:53,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:53,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:28:53,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:53,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:28:53,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:28:53,535 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:53,570 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-12-14 09:28:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:28:53,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 09:28:53,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:53,571 INFO L225 Difference]: With dead ends: 25 [2022-12-14 09:28:53,571 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 09:28:53,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:28:53,573 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:53,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 26 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:53,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 09:28:53,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 09:28:53,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 23 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-12-14 09:28:53,577 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 9 [2022-12-14 09:28:53,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:53,577 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-12-14 09:28:53,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-12-14 09:28:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:28:53,578 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:53,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:53,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:28:53,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:53,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash -223888646, now seen corresponding path program 1 times [2022-12-14 09:28:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:53,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220832812] [2022-12-14 09:28:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:53,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:53,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:53,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220832812] [2022-12-14 09:28:53,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220832812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:53,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:53,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:28:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049256436] [2022-12-14 09:28:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:53,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:28:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:28:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:28:53,967 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-12-14 09:28:54,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:54,043 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-12-14 09:28:54,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:28:54,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 [2022-12-14 09:28:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:54,044 INFO L225 Difference]: With dead ends: 42 [2022-12-14 09:28:54,045 INFO L226 Difference]: Without dead ends: 41 [2022-12-14 09:28:54,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 09:28:54,045 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:54,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 58 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:28:54,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-12-14 09:28:54,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28. [2022-12-14 09:28:54,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 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) [2022-12-14 09:28:54,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-12-14 09:28:54,049 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 10 [2022-12-14 09:28:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:54,049 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-12-14 09:28:54,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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) [2022-12-14 09:28:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-12-14 09:28:54,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:28:54,050 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:54,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:54,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 09:28:54,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:54,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:54,051 INFO L85 PathProgramCache]: Analyzing trace with hash -223882464, now seen corresponding path program 1 times [2022-12-14 09:28:54,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:54,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425531180] [2022-12-14 09:28:54,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:54,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:54,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425531180] [2022-12-14 09:28:54,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425531180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:54,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:54,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:28:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229030470] [2022-12-14 09:28:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:54,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:28:54,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:54,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:28:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:28:54,114 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2022-12-14 09:28:54,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:54,176 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-12-14 09:28:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:28:54,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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 [2022-12-14 09:28:54,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:54,178 INFO L225 Difference]: With dead ends: 41 [2022-12-14 09:28:54,178 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 09:28:54,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:28:54,179 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 16 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:54,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 55 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:28:54,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 09:28:54,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-12-14 09:28:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-12-14 09:28:54,182 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 10 [2022-12-14 09:28:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:54,183 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-12-14 09:28:54,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 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) [2022-12-14 09:28:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-12-14 09:28:54,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:28:54,183 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:54,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:54,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 09:28:54,184 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:54,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:54,184 INFO L85 PathProgramCache]: Analyzing trace with hash -223858854, now seen corresponding path program 1 times [2022-12-14 09:28:54,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:54,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605779041] [2022-12-14 09:28:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:54,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:54,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605779041] [2022-12-14 09:28:54,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605779041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:54,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:54,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:28:54,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081761281] [2022-12-14 09:28:54,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:54,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:28:54,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:54,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:28:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:28:54,222 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-12-14 09:28:54,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:54,262 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-12-14 09:28:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:28:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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 [2022-12-14 09:28:54,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:54,263 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:28:54,263 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 09:28:54,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:28:54,264 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 43 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 [2022-12-14 09:28:54,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 43 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:54,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 09:28:54,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-12-14 09:28:54,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:54,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2022-12-14 09:28:54,268 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2022-12-14 09:28:54,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:54,268 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2022-12-14 09:28:54,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 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) [2022-12-14 09:28:54,268 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2022-12-14 09:28:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 09:28:54,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:54,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:28:54,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 09:28:54,269 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1650312029, now seen corresponding path program 1 times [2022-12-14 09:28:54,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:54,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856958788] [2022-12-14 09:28:54,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:54,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:54,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856958788] [2022-12-14 09:28:54,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856958788] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:28:54,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120673647] [2022-12-14 09:28:54,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:54,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:28:54,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:28:54,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:28:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:54,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:28:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:28:54,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:54,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:28:54,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120673647] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:54,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:28:54,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2022-12-14 09:28:54,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483586622] [2022-12-14 09:28:54,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:54,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:28:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:54,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:28:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:28:54,475 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2022-12-14 09:28:54,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:54,511 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-12-14 09:28:54,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:28:54,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) Word has length 11 [2022-12-14 09:28:54,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:54,512 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:28:54,512 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 09:28:54,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:28:54,513 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:54,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 09:28:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-12-14 09:28:54,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-12-14 09:28:54,518 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 11 [2022-12-14 09:28:54,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:54,518 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-12-14 09:28:54,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2022-12-14 09:28:54,518 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-12-14 09:28:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:28:54,518 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:54,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:54,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:28:54,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 09:28:54,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:54,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:54,722 INFO L85 PathProgramCache]: Analyzing trace with hash -408621412, now seen corresponding path program 1 times [2022-12-14 09:28:54,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:54,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877978977] [2022-12-14 09:28:54,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:54,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:54,852 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:54,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877978977] [2022-12-14 09:28:54,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877978977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:54,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:54,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:28:54,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175188809] [2022-12-14 09:28:54,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:54,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:28:54,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:54,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:28:54,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:28:54,855 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:54,894 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-12-14 09:28:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:28:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 09:28:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:54,895 INFO L225 Difference]: With dead ends: 26 [2022-12-14 09:28:54,895 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 09:28:54,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:28:54,895 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:54,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:28:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 09:28:54,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 09:28:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 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) [2022-12-14 09:28:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-12-14 09:28:54,898 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2022-12-14 09:28:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:54,898 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-12-14 09:28:54,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:54,898 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-12-14 09:28:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:28:54,899 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:54,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 09:28:54,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 09:28:54,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:28:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash -379934600, now seen corresponding path program 1 times [2022-12-14 09:28:54,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:54,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101379624] [2022-12-14 09:28:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:54,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101379624] [2022-12-14 09:28:54,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101379624] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:28:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79835060] [2022-12-14 09:28:54,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:54,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:54,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:28:54,967 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:28:54,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:28:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:55,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 09:28:55,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:28:55,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:55,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:28:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:55,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79835060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:28:55,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [867526474] [2022-12-14 09:28:55,136 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 09:28:55,137 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:28:55,139 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:28:55,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:28:55,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:28:55,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,209 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:28:55,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 09:28:55,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 09:28:55,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,288 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:28:55,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 41 [2022-12-14 09:28:55,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,369 INFO L321 Elim1Store]: treesize reduction 72, result has 6.5 percent of original size [2022-12-14 09:28:55,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 184 treesize of output 217 [2022-12-14 09:28:55,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,484 INFO L321 Elim1Store]: treesize reduction 144, result has 7.1 percent of original size [2022-12-14 09:28:55,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 186 treesize of output 218 [2022-12-14 09:28:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,600 INFO L321 Elim1Store]: treesize reduction 83, result has 37.6 percent of original size [2022-12-14 09:28:55,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 222 [2022-12-14 09:28:55,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,706 INFO L321 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2022-12-14 09:28:55,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 244 treesize of output 222 [2022-12-14 09:28:55,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:55,835 INFO L321 Elim1Store]: treesize reduction 140, result has 18.1 percent of original size [2022-12-14 09:28:55,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 59 [2022-12-14 09:28:56,046 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:28:56,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 193 [2022-12-14 09:28:56,161 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:28:56,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 198 [2022-12-14 09:28:56,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:56,182 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:28:56,317 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:28:56,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:28:56,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:56,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:28:56,419 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:28:56,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:28:56,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:56,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:28:56,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:28:56,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:28:57,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:28:58,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:28:58,877 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:28:58,890 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:28:58,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:29:04,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:04,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:04,797 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:29:04,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:29:04,832 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:04,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 193 [2022-12-14 09:29:04,925 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:29:04,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 203 [2022-12-14 09:29:04,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:04,940 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:05,028 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:05,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:29:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:05,051 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:05,121 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:05,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:29:05,295 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:05,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:05,318 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:05,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:05,344 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:05,358 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:05,385 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:05,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:05,409 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:05,485 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:05,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:05,505 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:05,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:05,545 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:05,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:07,490 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:29:09,891 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (or (and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) |ULTIMATE.start_append_~plist#1.base|) (= (select |#length| |ULTIMATE.start_append_~item~0#1.base|) 8) (= (select |#valid| |ULTIMATE.start_append_~item~0#1.base|) 1) (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 4) |ULTIMATE.start_append_~plist#1.offset|) (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)) 4) |ULTIMATE.start_append_~plist#1.offset|) (= |ULTIMATE.start_append_~plist#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)))) (and (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)) 0)) (= (select |#length| |ULTIMATE.start_append_~item~0#1.base|) 8) (< (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)) |#StackHeapBarrier|) (= (select |#valid| |ULTIMATE.start_append_~item~0#1.base|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)) 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 0) (= (select |#valid| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4))) 1) (= (select |#length| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4))) 8) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 0) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)) |ULTIMATE.start_append_~item~0#1.base|))) (and (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 0))) (= (select |#length| |ULTIMATE.start_append_~item~0#1.base|) 8) (= (select |#valid| |ULTIMATE.start_append_~item~0#1.base|) 1) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) |ULTIMATE.start_append_~plist#1.base|)) (not (= (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 4) |ULTIMATE.start_append_~plist#1.offset|))) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4)) (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 4))) (= (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) |ULTIMATE.start_append_~item~0#1.offset|) 4)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~item~0#1.base|) (+ |ULTIMATE.start_append_~item~0#1.offset| 4))))) (<= ~c~0 2147483647) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (= |ULTIMATE.start_main_~#list~0#1.base| |ULTIMATE.start_append_#in~plist#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_append_~plist#1.base|) |ULTIMATE.start_append_~plist#1.offset|) |ULTIMATE.start_append_~item~0#1.base|) (= |ULTIMATE.start_main_~length~0#1| |ULTIMATE.start_main_#t~post12#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_append_~plist#1.base|) |ULTIMATE.start_append_~plist#1.offset|) |ULTIMATE.start_append_~item~0#1.offset|) (< 2147483646 |ULTIMATE.start_main_#t~post12#1|) (< |ULTIMATE.start_append_~item~0#1.base| |#StackHeapBarrier|) (<= |#NULL.offset| 0) (<= 1 ~c~0) (= |ULTIMATE.start_append_#in~plist#1.base| |ULTIMATE.start_append_~plist#1.base|) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (= |ULTIMATE.start_append_#in~plist#1.offset| |ULTIMATE.start_main_~#list~0#1.offset|) (= |ULTIMATE.start_append_~item~0#1.offset| 0) (not (= |ULTIMATE.start_append_~item~0#1.base| 0)) (= |ULTIMATE.start_append_#in~plist#1.offset| |ULTIMATE.start_append_~plist#1.offset|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:29:09,891 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:29:09,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:29:09,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-12-14 09:29:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311087858] [2022-12-14 09:29:09,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:29:09,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:29:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:29:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:29:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-12-14 09:29:09,893 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:10,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:29:10,008 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-12-14 09:29:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 09:29:10,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 09:29:10,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:29:10,009 INFO L225 Difference]: With dead ends: 56 [2022-12-14 09:29:10,009 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 09:29:10,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2022-12-14 09:29:10,010 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:29:10,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 83 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:29:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 09:29:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2022-12-14 09:29:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:10,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-12-14 09:29:10,015 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 12 [2022-12-14 09:29:10,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:29:10,016 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-12-14 09:29:10,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-12-14 09:29:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:29:10,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:29:10,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:29:10,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:29:10,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:29:10,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:29:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:29:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 217638201, now seen corresponding path program 1 times [2022-12-14 09:29:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:29:10,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770870269] [2022-12-14 09:29:10,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:29:10,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:29:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:29:10,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:10,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:29:10,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770870269] [2022-12-14 09:29:10,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770870269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:29:10,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:29:10,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:29:10,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750234403] [2022-12-14 09:29:10,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:29:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:29:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:29:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:29:10,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:29:10,287 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:10,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:29:10,353 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2022-12-14 09:29:10,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:29:10,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:29:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:29:10,354 INFO L225 Difference]: With dead ends: 47 [2022-12-14 09:29:10,354 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 09:29:10,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:29:10,354 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:29:10,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:29:10,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 09:29:10,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-12-14 09:29:10,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 38 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2022-12-14 09:29:10,357 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 13 [2022-12-14 09:29:10,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:29:10,357 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2022-12-14 09:29:10,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2022-12-14 09:29:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 09:29:10,357 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:29:10,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:29:10,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 09:29:10,358 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:29:10,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:29:10,358 INFO L85 PathProgramCache]: Analyzing trace with hash -186974995, now seen corresponding path program 1 times [2022-12-14 09:29:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:29:10,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250217379] [2022-12-14 09:29:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:29:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:29:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:29:10,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:10,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:29:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250217379] [2022-12-14 09:29:10,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250217379] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:29:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996764307] [2022-12-14 09:29:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:29:10,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:29:10,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:29:10,447 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:29:10,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:29:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:29:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 09:29:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:29:10,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:10,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:29:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:10,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996764307] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:29:10,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1307381044] [2022-12-14 09:29:10,615 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 09:29:10,615 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:29:10,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:29:10,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:29:10,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:29:10,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,632 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:29:10,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 09:29:10,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 09:29:10,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,678 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:29:10,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 41 [2022-12-14 09:29:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,728 INFO L321 Elim1Store]: treesize reduction 72, result has 6.5 percent of original size [2022-12-14 09:29:10,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 184 treesize of output 212 [2022-12-14 09:29:10,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,837 INFO L321 Elim1Store]: treesize reduction 144, result has 7.1 percent of original size [2022-12-14 09:29:10,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 186 treesize of output 218 [2022-12-14 09:29:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,920 INFO L321 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2022-12-14 09:29:10,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 199 [2022-12-14 09:29:10,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:10,998 INFO L321 Elim1Store]: treesize reduction 83, result has 37.6 percent of original size [2022-12-14 09:29:10,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 244 treesize of output 245 [2022-12-14 09:29:11,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,068 INFO L321 Elim1Store]: treesize reduction 140, result has 18.1 percent of original size [2022-12-14 09:29:11,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 59 [2022-12-14 09:29:11,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,109 INFO L321 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size [2022-12-14 09:29:11,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 46 treesize of output 28 [2022-12-14 09:29:11,281 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:29:11,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 175 treesize of output 207 [2022-12-14 09:29:11,327 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:11,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 178 [2022-12-14 09:29:11,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:11,437 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:11,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:29:11,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:11,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:11,509 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:11,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:29:20,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:29:20,695 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:29:20,730 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,801 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,827 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,862 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,882 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,926 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,970 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:20,994 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,038 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,062 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,078 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,104 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,142 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,173 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,201 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,237 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,281 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,300 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,341 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,359 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,395 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,406 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,435 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,494 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,521 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,573 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,598 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,641 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,660 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,681 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,743 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,761 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,773 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,817 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,837 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,857 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,902 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,918 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,946 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:21,969 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,039 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,061 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,096 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,142 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,166 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,191 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,244 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,259 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,292 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,317 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:22,346 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:23,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 3 [2022-12-14 09:29:23,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 3 [2022-12-14 09:29:38,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:38,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:38,722 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:29:38,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:29:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:41,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:41,497 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:29:41,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:29:41,582 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:29:41,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 175 treesize of output 212 [2022-12-14 09:29:41,621 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:41,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 178 [2022-12-14 09:29:41,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:41,633 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:41,732 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:41,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:29:41,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:41,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:41,806 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:41,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:29:42,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,192 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:42,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,237 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:42,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:42,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:29:42,261 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:29:42,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:29:42,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:42,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:42,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:29:42,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:42,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:42,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:29:42,444 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,463 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 3 [2022-12-14 09:29:42,538 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,563 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,584 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,610 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,631 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,649 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,669 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,686 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,703 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:42,733 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:44,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 09:29:44,822 INFO L321 Elim1Store]: treesize reduction 64, result has 53.3 percent of original size [2022-12-14 09:29:44,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 106 [2022-12-14 09:29:44,847 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 09:29:44,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 85 [2022-12-14 09:29:44,863 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:44,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 09:29:45,063 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:29:45,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1307381044] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:29:45,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:29:45,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 20 [2022-12-14 09:29:45,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002921422] [2022-12-14 09:29:45,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:29:45,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:29:45,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:29:45,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:29:45,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-14 09:29:45,566 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-12-14 09:29:45,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:29:45,641 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-12-14 09:29:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 09:29:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) Word has length 16 [2022-12-14 09:29:45,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:29:45,642 INFO L225 Difference]: With dead ends: 43 [2022-12-14 09:29:45,642 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 09:29:45,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-14 09:29:45,643 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:29:45,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 15 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:29:45,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 09:29:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2022-12-14 09:29:45,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-12-14 09:29:45,648 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 16 [2022-12-14 09:29:45,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:29:45,648 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-12-14 09:29:45,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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) [2022-12-14 09:29:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-12-14 09:29:45,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 09:29:45,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:29:45,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:29:45,654 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:29:45,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 09:29:45,850 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:29:45,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:29:45,850 INFO L85 PathProgramCache]: Analyzing trace with hash 400587366, now seen corresponding path program 1 times [2022-12-14 09:29:45,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:29:45,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197727692] [2022-12-14 09:29:45,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:29:45,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:29:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:29:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:45,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:29:45,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197727692] [2022-12-14 09:29:45,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197727692] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:29:45,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369792298] [2022-12-14 09:29:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:29:45,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:29:45,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:29:45,987 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:29:45,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:29:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:29:46,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 09:29:46,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:29:46,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:46,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:29:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:46,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369792298] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:29:46,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1198195341] [2022-12-14 09:29:46,214 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 09:29:46,214 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:29:46,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:29:46,215 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:29:46,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:29:46,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,238 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:29:46,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 09:29:46,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 09:29:46,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,288 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:29:46,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 32 [2022-12-14 09:29:46,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2022-12-14 09:29:46,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,452 INFO L321 Elim1Store]: treesize reduction 212, result has 12.0 percent of original size [2022-12-14 09:29:46,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 195 treesize of output 240 [2022-12-14 09:29:46,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,510 INFO L321 Elim1Store]: treesize reduction 72, result has 6.5 percent of original size [2022-12-14 09:29:46,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 176 treesize of output 204 [2022-12-14 09:29:46,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,616 INFO L321 Elim1Store]: treesize reduction 83, result has 37.6 percent of original size [2022-12-14 09:29:46,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 222 [2022-12-14 09:29:46,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,682 INFO L321 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2022-12-14 09:29:46,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 244 treesize of output 222 [2022-12-14 09:29:46,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,738 INFO L321 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2022-12-14 09:29:46,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 48 [2022-12-14 09:29:46,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,873 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:29:46,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 41 [2022-12-14 09:29:46,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:46,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,289 INFO L321 Elim1Store]: treesize reduction 498, result has 14.3 percent of original size [2022-12-14 09:29:47,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 278 treesize of output 356 [2022-12-14 09:29:47,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,422 INFO L321 Elim1Store]: treesize reduction 158, result has 3.1 percent of original size [2022-12-14 09:29:47,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 196 treesize of output 230 [2022-12-14 09:29:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,484 INFO L321 Elim1Store]: treesize reduction 158, result has 5.4 percent of original size [2022-12-14 09:29:47,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 241 treesize of output 208 [2022-12-14 09:29:47,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,517 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:47,560 INFO L321 Elim1Store]: treesize reduction 207, result has 10.4 percent of original size [2022-12-14 09:29:47,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 432 treesize of output 302 [2022-12-14 09:29:47,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:47,728 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:29:47,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:29:47,770 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:47,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 188 [2022-12-14 09:29:47,889 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:29:47,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 198 [2022-12-14 09:29:47,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:47,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:47,988 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:47,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:29:48,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:48,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:48,077 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:48,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:29:50,842 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:50,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 3 [2022-12-14 09:29:50,888 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:50,925 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:50,936 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:50,961 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,002 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,015 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,034 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,078 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,093 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,116 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,137 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,157 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,197 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:51,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:29:52,856 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:52,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 188 [2022-12-14 09:29:52,924 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:29:52,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 198 [2022-12-14 09:29:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:52,939 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:53,021 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:53,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:29:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:53,041 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:53,094 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:29:53,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:29:54,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:29:54,791 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,860 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,872 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,895 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,926 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,951 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,968 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:54,988 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:55,010 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:29:55,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 3 [2022-12-14 09:29:56,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:56,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:29:56,139 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:29:56,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:29:56,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 09:29:56,369 INFO L321 Elim1Store]: treesize reduction 64, result has 53.3 percent of original size [2022-12-14 09:29:56,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 69 treesize of output 106 [2022-12-14 09:29:56,387 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 09:29:56,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 89 [2022-12-14 09:29:56,401 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:29:56,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2022-12-14 09:29:56,511 INFO L321 Elim1Store]: treesize reduction 36, result has 43.8 percent of original size [2022-12-14 09:29:56,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 58 [2022-12-14 09:29:56,526 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 09:29:56,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 56 [2022-12-14 09:29:56,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 09:29:56,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 09:29:56,597 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:29:57,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1198195341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:29:57,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:29:57,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 6, 6] total 27 [2022-12-14 09:29:57,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238380257] [2022-12-14 09:29:57,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:29:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 09:29:57,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:29:57,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 09:29:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2022-12-14 09:29:57,570 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:29:57,766 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-12-14 09:29:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 09:29:57,766 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 09:29:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:29:57,766 INFO L225 Difference]: With dead ends: 38 [2022-12-14 09:29:57,767 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 09:29:57,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2022-12-14 09:29:57,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:29:57,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:29:57,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 09:29:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 09:29:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2022-12-14 09:29:57,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 19 [2022-12-14 09:29:57,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:29:57,771 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2022-12-14 09:29:57,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:29:57,771 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2022-12-14 09:29:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-12-14 09:29:57,771 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:29:57,771 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1] [2022-12-14 09:29:57,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 09:29:57,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 09:29:57,973 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:29:57,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:29:57,974 INFO L85 PathProgramCache]: Analyzing trace with hash 374355281, now seen corresponding path program 2 times [2022-12-14 09:29:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:29:57,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586410580] [2022-12-14 09:29:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:29:57,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:29:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:29:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:58,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:29:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586410580] [2022-12-14 09:29:58,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586410580] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:29:58,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642197019] [2022-12-14 09:29:58,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:29:58,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:29:58,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:29:58,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:29:58,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 09:29:59,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-14 09:29:59,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:29:59,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 09:29:59,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:29:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:59,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:29:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:29:59,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642197019] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:29:59,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [341422171] [2022-12-14 09:29:59,455 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 09:29:59,455 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:29:59,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:29:59,456 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:29:59,456 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:29:59,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,473 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:29:59,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 09:29:59,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 09:29:59,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,523 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:29:59,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 41 [2022-12-14 09:29:59,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,707 INFO L321 Elim1Store]: treesize reduction 212, result has 12.0 percent of original size [2022-12-14 09:29:59,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 195 treesize of output 235 [2022-12-14 09:29:59,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,773 INFO L321 Elim1Store]: treesize reduction 72, result has 6.5 percent of original size [2022-12-14 09:29:59,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 176 treesize of output 204 [2022-12-14 09:29:59,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,880 INFO L321 Elim1Store]: treesize reduction 83, result has 37.6 percent of original size [2022-12-14 09:29:59,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 222 [2022-12-14 09:29:59,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,960 INFO L321 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2022-12-14 09:29:59,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 244 treesize of output 222 [2022-12-14 09:29:59,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:29:59,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:00,022 INFO L321 Elim1Store]: treesize reduction 48, result has 39.2 percent of original size [2022-12-14 09:30:00,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 48 [2022-12-14 09:30:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:00,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:00,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:00,065 INFO L321 Elim1Store]: treesize reduction 76, result has 29.0 percent of original size [2022-12-14 09:30:00,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 59 [2022-12-14 09:30:00,773 INFO L321 Elim1Store]: treesize reduction 583, result has 10.3 percent of original size [2022-12-14 09:30:00,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 576 treesize of output 622 [2022-12-14 09:30:01,792 INFO L321 Elim1Store]: treesize reduction 736, result has 14.6 percent of original size [2022-12-14 09:30:01,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 38 case distinctions, treesize of input 557 treesize of output 659 [2022-12-14 09:30:01,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:01,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:02,230 INFO L321 Elim1Store]: treesize reduction 469, result has 14.7 percent of original size [2022-12-14 09:30:02,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 709 treesize of output 537 [2022-12-14 09:30:02,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:02,396 INFO L321 Elim1Store]: treesize reduction 254, result has 16.2 percent of original size [2022-12-14 09:30:02,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 706 treesize of output 640 [2022-12-14 09:30:02,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:02,459 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 09:30:02,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 398 treesize of output 381 [2022-12-14 09:30:02,482 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:02,495 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-14 09:30:02,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 391 treesize of output 374 [2022-12-14 09:30:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:03,184 INFO L321 Elim1Store]: treesize reduction 356, result has 13.0 percent of original size [2022-12-14 09:30:03,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 576 treesize of output 582 [2022-12-14 09:30:05,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:05,862 INFO L321 Elim1Store]: treesize reduction 474, result has 15.5 percent of original size [2022-12-14 09:30:05,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 526 treesize of output 510 [2022-12-14 09:30:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:12,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:12,281 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:30:12,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:30:12,364 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:30:12,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 175 treesize of output 207 [2022-12-14 09:30:12,404 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:30:12,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 178 [2022-12-14 09:30:12,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:12,415 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:12,482 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:12,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:30:12,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:12,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:12,570 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:12,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:30:14,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:30:14,513 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,526 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,543 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,564 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,582 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,609 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,627 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,663 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,685 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,702 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,720 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,740 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,757 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,798 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,814 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:14,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 3 [2022-12-14 09:30:15,947 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:30:15,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 188 [2022-12-14 09:30:16,040 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:30:16,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 198 [2022-12-14 09:30:16,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:16,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:16,179 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:16,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:30:16,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:16,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:16,280 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:16,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:30:18,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 3 [2022-12-14 09:30:18,588 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,623 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,633 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,708 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,734 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,760 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,786 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,798 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,825 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,889 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,917 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:18,933 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:19,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 7 [2022-12-14 09:30:22,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:22,414 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:22,427 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:30:22,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:30:23,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:30:23,564 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1655#(and (<= 0 |ULTIMATE.start_main_~#list~0#1.offset|) (<= ~c~0 2147483647) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_append_#in~plist#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post12#1|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_append_~item~0#1.offset|) (<= 1 ~c~0) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_append_~plist#1.base|) (<= |ULTIMATE.start_append_~item~0#1.offset| 0) (<= |ULTIMATE.start_main_~#list~0#1.offset| 0) (<= |ULTIMATE.start_append_#in~plist#1.offset| 0) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_append_~plist#1.offset|) (<= 0 |ULTIMATE.start_append_#in~plist#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_append_~plist#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 09:30:23,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:30:23,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:30:23,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-12-14 09:30:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371063168] [2022-12-14 09:30:23,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:30:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 09:30:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:30:23,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 09:30:23,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-12-14 09:30:23,566 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:23,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:30:23,778 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2022-12-14 09:30:23,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 09:30:23,779 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-12-14 09:30:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:30:23,779 INFO L225 Difference]: With dead ends: 68 [2022-12-14 09:30:23,779 INFO L226 Difference]: Without dead ends: 67 [2022-12-14 09:30:23,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=347, Invalid=1135, Unknown=0, NotChecked=0, Total=1482 [2022-12-14 09:30:23,780 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 41 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:30:23,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 50 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:30:23,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-14 09:30:23,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-12-14 09:30:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:23,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2022-12-14 09:30:23,785 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 30 [2022-12-14 09:30:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:30:23,785 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2022-12-14 09:30:23,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2022-12-14 09:30:23,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 09:30:23,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:30:23,787 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1] [2022-12-14 09:30:23,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 09:30:23,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:30:23,990 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:30:23,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:30:23,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1514762819, now seen corresponding path program 3 times [2022-12-14 09:30:23,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:30:23,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051957682] [2022-12-14 09:30:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:30:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:30:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:30:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:30:24,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:30:24,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051957682] [2022-12-14 09:30:24,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051957682] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:30:24,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913963998] [2022-12-14 09:30:24,529 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 09:30:24,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:30:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:30:24,530 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:30:24,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:30:24,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 09:30:24,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:30:24,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 1014 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 09:30:24,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:30:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:30:24,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:30:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:30:25,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913963998] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:30:25,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1054368619] [2022-12-14 09:30:25,192 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 09:30:25,192 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:30:25,193 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:30:25,193 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:30:25,193 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:30:25,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,211 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 09:30:25,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 09:30:25,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 09:30:25,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,271 INFO L321 Elim1Store]: treesize reduction 72, result has 6.5 percent of original size [2022-12-14 09:30:25,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 184 treesize of output 217 [2022-12-14 09:30:25,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,346 INFO L321 Elim1Store]: treesize reduction 144, result has 7.1 percent of original size [2022-12-14 09:30:25,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 186 treesize of output 223 [2022-12-14 09:30:25,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,408 INFO L321 Elim1Store]: treesize reduction 107, result has 19.5 percent of original size [2022-12-14 09:30:25,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 221 treesize of output 199 [2022-12-14 09:30:25,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,482 INFO L321 Elim1Store]: treesize reduction 83, result has 37.6 percent of original size [2022-12-14 09:30:25,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 221 [2022-12-14 09:30:25,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,532 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 09:30:25,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 41 [2022-12-14 09:30:25,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,621 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:25,629 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:30:25,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:30:25,658 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:30:25,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 193 [2022-12-14 09:30:25,730 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:30:25,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 203 [2022-12-14 09:30:25,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:25,823 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:25,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:30:25,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:25,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:25,896 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:25,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:30:26,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,508 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:26,509 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:26,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:26,534 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:26,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,554 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,567 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,591 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,602 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,648 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:26,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,671 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:26,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,697 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,718 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,864 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:26,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,883 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:26,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,920 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:26,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:26,939 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,951 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:26,960 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:28,199 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 09:30:28,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 193 [2022-12-14 09:30:28,315 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-12-14 09:30:28,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 166 treesize of output 203 [2022-12-14 09:30:28,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:28,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:28,406 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:28,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 212 treesize of output 221 [2022-12-14 09:30:28,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:28,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:28,507 INFO L321 Elim1Store]: treesize reduction 95, result has 39.1 percent of original size [2022-12-14 09:30:28,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 228 [2022-12-14 09:30:30,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:30,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:30,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,194 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,217 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:30,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:30,237 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,253 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:30,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:30,267 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:30,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:30,326 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,342 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,389 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,425 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,440 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,458 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:30,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:30,478 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,517 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,532 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,557 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,571 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,589 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,638 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,662 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,681 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,699 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,768 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,790 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,810 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,831 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,851 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,871 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:30,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 7 [2022-12-14 09:30:30,919 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,934 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:30,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:30,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 3 [2022-12-14 09:30:30,995 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:31,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2022-12-14 09:30:31,574 INFO L321 Elim1Store]: treesize reduction 108, result has 27.5 percent of original size [2022-12-14 09:30:31,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 110 [2022-12-14 09:30:31,652 INFO L321 Elim1Store]: treesize reduction 36, result has 18.2 percent of original size [2022-12-14 09:30:31,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 22 [2022-12-14 09:30:31,707 INFO L321 Elim1Store]: treesize reduction 108, result has 27.5 percent of original size [2022-12-14 09:30:31,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 110 [2022-12-14 09:30:31,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:31,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:31,773 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:31,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 14 [2022-12-14 09:30:31,784 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:31,794 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:31,803 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:31,915 INFO L321 Elim1Store]: treesize reduction 108, result has 27.5 percent of original size [2022-12-14 09:30:31,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 64 treesize of output 110 [2022-12-14 09:30:31,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:31,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:31,981 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-12-14 09:30:31,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 14 [2022-12-14 09:30:32,006 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,021 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,030 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2022-12-14 09:30:32,122 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2022-12-14 09:30:32,164 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,179 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,194 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,217 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,234 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,247 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:32,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2022-12-14 09:30:32,279 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 09:30:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 09:30:33,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 09:30:33,523 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 09:30:33,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 09:30:33,572 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 09:30:33,613 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 09:30:33,733 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2022-12-14 09:30:33,783 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:30:34,987 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2275#(and (<= 0 |ULTIMATE.start_main_~#list~0#1.offset|) (<= ~c~0 2147483647) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_append_#in~plist#1.base|) (< 2147483646 |ULTIMATE.start_main_#t~post12#1|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_append_~item~0#1.offset|) (<= 1 ~c~0) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 |ULTIMATE.start_main_~length~0#1|) (<= 0 |ULTIMATE.start_append_~plist#1.base|) (<= |ULTIMATE.start_append_~item~0#1.offset| 0) (<= |ULTIMATE.start_main_~#list~0#1.offset| 0) (<= |ULTIMATE.start_append_#in~plist#1.offset| 0) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_append_~plist#1.offset|) (<= 0 |ULTIMATE.start_append_#in~plist#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_append_~plist#1.offset| 0) (<= 0 |#StackHeapBarrier|))' at error location [2022-12-14 09:30:34,987 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:30:34,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 09:30:34,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 46 [2022-12-14 09:30:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164638744] [2022-12-14 09:30:34,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 09:30:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 09:30:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:30:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 09:30:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=2142, Unknown=0, NotChecked=0, Total=2756 [2022-12-14 09:30:34,989 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 48 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:35,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:30:35,682 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2022-12-14 09:30:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-14 09:30:35,683 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 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 66 [2022-12-14 09:30:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:30:35,684 INFO L225 Difference]: With dead ends: 140 [2022-12-14 09:30:35,684 INFO L226 Difference]: Without dead ends: 139 [2022-12-14 09:30:35,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 145 SyntacticMatches, 22 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2920 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1397, Invalid=4153, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 09:30:35,685 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 85 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:30:35,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 92 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:30:35,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-12-14 09:30:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-12-14 09:30:35,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.0072463768115942) internal successors, (139), 138 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:35,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2022-12-14 09:30:35,693 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 66 [2022-12-14 09:30:35,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:30:35,693 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2022-12-14 09:30:35,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.9361702127659575) internal successors, (138), 47 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2022-12-14 09:30:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-14 09:30:35,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:30:35,695 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1] [2022-12-14 09:30:35,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:30:35,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 09:30:35,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-12-14 09:30:35,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:30:35,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1504167641, now seen corresponding path program 4 times [2022-12-14 09:30:35,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:30:35,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135789207] [2022-12-14 09:30:35,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:30:35,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:30:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:30:37,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:30:37,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:30:37,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135789207] [2022-12-14 09:30:37,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135789207] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 09:30:37,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487352883] [2022-12-14 09:30:37,882 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 09:30:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:30:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:30:37,883 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:30:37,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 09:30:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:30:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2082 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-14 09:30:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:30:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 1480 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 09:30:39,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:30:39,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487352883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:30:39,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:30:39,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [42] imperfect sequences [46] total 88 [2022-12-14 09:30:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983066450] [2022-12-14 09:30:39,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:30:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 09:30:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:30:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 09:30:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=6751, Unknown=0, NotChecked=0, Total=7832 [2022-12-14 09:30:39,425 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 42 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:40,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:30:40,819 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2022-12-14 09:30:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 09:30:40,820 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 42 states have internal predecessors, (128), 0 states have call successors, (0), 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 138 [2022-12-14 09:30:40,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:30:40,820 INFO L225 Difference]: With dead ends: 139 [2022-12-14 09:30:40,820 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:30:40,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3029 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1731, Invalid=10041, Unknown=0, NotChecked=0, Total=11772 [2022-12-14 09:30:40,823 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:30:40,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 176 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-14 09:30:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:30:40,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:30:40,823 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) [2022-12-14 09:30:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:30:40,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 138 [2022-12-14 09:30:40,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:30:40,824 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:30:40,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 42 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:30:40,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:30:40,824 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:30:40,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2022-12-14 09:30:40,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2022-12-14 09:30:40,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 09:30:41,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 09:30:41,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:30:41,623 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 545) no Hoare annotation was computed. [2022-12-14 09:30:41,623 INFO L899 garLoopResultBuilder]: For program point L543-2(lines 543 546) no Hoare annotation was computed. [2022-12-14 09:30:41,623 INFO L895 garLoopResultBuilder]: At program point L543-4(lines 543 546) the Hoare annotation is: (let ((.cse0 (<= ~c~0 19)) (.cse1 (<= 0 |ULTIMATE.start_append_#in~plist#1.base|)) (.cse2 (= |ULTIMATE.start_main_~#list~0#1.offset| 0)) (.cse3 (<= 0 |ULTIMATE.start_append_~item~0#1.offset|)) (.cse4 (<= 0 |ULTIMATE.start_main_~#list~0#1.base|)) (.cse5 (<= 0 |ULTIMATE.start_append_~plist#1.base|)) (.cse6 (<= |ULTIMATE.start_append_~item~0#1.offset| 0)) (.cse7 (<= |ULTIMATE.start_append_#in~plist#1.offset| 0)) (.cse8 (<= 1 |ULTIMATE.start_main_~length~0#1|)) (.cse9 (<= 0 |ULTIMATE.start_append_~plist#1.offset|)) (.cse10 (= |#NULL.offset| 0)) (.cse11 (<= 0 |ULTIMATE.start_append_#in~plist#1.offset|)) (.cse12 (<= |ULTIMATE.start_append_~plist#1.offset| 0)) (.cse13 (<= 0 |#StackHeapBarrier|)) (.cse14 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (<= 8 ~c~0) .cse3 (<= |ULTIMATE.start_main_~length~0#1| 8) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= 10 ~c~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= |ULTIMATE.start_main_~length~0#1| 10) .cse13 .cse14) (and .cse0 (< |ULTIMATE.start_main_~length~0#1| 2147483639) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (<= 13 ~c~0) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 (<= |ULTIMATE.start_main_~length~0#1| 4) .cse4 .cse5 .cse6 (<= 4 ~c~0) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~length~0#1| 2147483641) (<= 15 ~c~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= 19 ~c~0) .cse3 (< |ULTIMATE.start_main_~length~0#1| 2147483645) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 (<= 18 ~c~0) .cse1 .cse2 .cse3 .cse4 (< |ULTIMATE.start_main_~length~0#1| 2147483644) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= |ULTIMATE.start_main_~length~0#1| 2) .cse9 .cse10 (<= 2 ~c~0) .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= 17 ~c~0) .cse3 .cse4 .cse5 .cse6 (< |ULTIMATE.start_main_~length~0#1| 2147483643) .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse2 (= ~c~0 0) .cse4 .cse10 .cse13 (= |ULTIMATE.start_main_~length~0#1| 0) .cse14) (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~length~0#1| 2147483642) (<= 16 ~c~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 (<= |ULTIMATE.start_main_~length~0#1| 3) .cse1 .cse2 (<= 3 ~c~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= 6 ~c~0) (<= |ULTIMATE.start_main_~length~0#1| 6) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= 5 ~c~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (<= |ULTIMATE.start_main_~length~0#1| 5) .cse14) (and .cse0 .cse1 .cse2 (<= 14 ~c~0) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (< |ULTIMATE.start_main_~length~0#1| 2147483640) .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= |ULTIMATE.start_main_~length~0#1| 9) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 (<= 9 ~c~0) .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (<= 11 ~c~0) (< |ULTIMATE.start_main_~length~0#1| 2147483637) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~length~0#1| 2147483638) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (<= 12 ~c~0) .cse13 .cse14) (and .cse0 (<= |ULTIMATE.start_main_~length~0#1| 1) .cse1 .cse2 .cse3 (<= 1 ~c~0) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (<= |ULTIMATE.start_main_~length~0#1| 7) .cse9 .cse10 .cse11 (<= 7 ~c~0) .cse12 .cse13 .cse14))) [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point L543-5(lines 540 561) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point L531(line 531) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point L531-1(line 531) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point L552(line 552) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 558) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point L552-1(line 552) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 531) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 531) no Hoare annotation was computed. [2022-12-14 09:30:41,624 INFO L899 garLoopResultBuilder]: For program point L545(line 545) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point L545-1(line 545) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 552) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point L558(line 558) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point L558-1(line 558) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L895 garLoopResultBuilder]: At program point L554-1(lines 554 559) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~length~0#1| 2147483646) (<= 0 |ULTIMATE.start_main_~#list~0#1.offset|) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_append_#in~plist#1.base|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_append_~item~0#1.offset|) (<= 1 ~c~0) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 |ULTIMATE.start_append_~plist#1.base|) (<= |ULTIMATE.start_append_~item~0#1.offset| 0) (<= |ULTIMATE.start_main_~#list~0#1.offset| 0) (<= |ULTIMATE.start_append_#in~plist#1.offset| 0) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_append_~plist#1.offset|) (<= 0 |ULTIMATE.start_append_#in~plist#1.offset|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_append_~plist#1.offset| 0) (<= 0 |#StackHeapBarrier|)) (and (<= 0 (+ ~c~0 2147483648)) (<= |ULTIMATE.start_main_~length~0#1| 0))) [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 545) no Hoare annotation was computed. [2022-12-14 09:30:41,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 558) no Hoare annotation was computed. [2022-12-14 09:30:41,628 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:30:41,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:30:41,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:30:41 BoogieIcfgContainer [2022-12-14 09:30:41,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:30:41,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:30:41,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:30:41,649 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:30:41,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:28:52" (3/4) ... [2022-12-14 09:30:41,651 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:30:41,658 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-12-14 09:30:41,658 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-12-14 09:30:41,658 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 09:30:41,658 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:30:41,683 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:30:41,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:30:41,683 INFO L158 Benchmark]: Toolchain (without parser) took 109769.46ms. Allocated memory was 117.4MB in the beginning and 775.9MB in the end (delta: 658.5MB). Free memory was 82.2MB in the beginning and 686.7MB in the end (delta: -604.5MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,683 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:30:41,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.18ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 65.4MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,683 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.06ms. Allocated memory is still 117.4MB. Free memory was 65.4MB in the beginning and 63.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,684 INFO L158 Benchmark]: Boogie Preprocessor took 18.05ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 61.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,684 INFO L158 Benchmark]: RCFGBuilder took 338.48ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 61.9MB in the beginning and 112.7MB in the end (delta: -50.8MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,684 INFO L158 Benchmark]: TraceAbstraction took 109055.78ms. Allocated memory was 146.8MB in the beginning and 775.9MB in the end (delta: 629.1MB). Free memory was 111.9MB in the beginning and 689.9MB in the end (delta: -578.0MB). Peak memory consumption was 484.7MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,684 INFO L158 Benchmark]: Witness Printer took 34.31ms. Allocated memory is still 775.9MB. Free memory was 689.9MB in the beginning and 686.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:30:41,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.18ms. Allocated memory is still 117.4MB. Free memory was 81.8MB in the beginning and 65.4MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.06ms. Allocated memory is still 117.4MB. Free memory was 65.4MB in the beginning and 63.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.05ms. Allocated memory is still 117.4MB. Free memory was 63.3MB in the beginning and 61.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.48ms. Allocated memory was 117.4MB in the beginning and 146.8MB in the end (delta: 29.4MB). Free memory was 61.9MB in the beginning and 112.7MB in the end (delta: -50.8MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * TraceAbstraction took 109055.78ms. Allocated memory was 146.8MB in the beginning and 775.9MB in the end (delta: 629.1MB). Free memory was 111.9MB in the beginning and 689.9MB in the end (delta: -578.0MB). Peak memory consumption was 484.7MB. Max. memory is 16.1GB. * Witness Printer took 34.31ms. Allocated memory is still 775.9MB. Free memory was 689.9MB in the beginning and 686.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 531]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 531]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 545]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 545]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 552]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 558]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 558]: 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, 22 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 109.0s, OverallIterations: 16, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 287 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 825 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 636 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1472 IncrementalHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 189 mSDtfsCounter, 1472 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 772 GetRequests, 399 SyntacticMatches, 46 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7375 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=15, InterpolantAutomatonStates: 185, 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, 16 MinimizatonAttempts, 34 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 24 NumberOfFragments, 1076 HoareAnnotationTreeSize, 2 FomulaSimplifications, 1479 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 674 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 788 ConstructedInterpolants, 0 QuantifiedInterpolants, 2268 SizeOfPredicates, 46 NumberOfNonLiveVariables, 4656 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 29 InterpolantComputations, 11 PerfectInterpolantSequences, 1515/4186 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: 44.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 24, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 51, TOOLS_POST_TIME: 42.4s, 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: 51, TOOLS_QUANTIFIERELIM_TIME: 42.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 28.6s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 88, FLUID_YES_ANSWERS: 9, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 9, DOMAIN_ALPHA_TIME: 2.4s, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 4, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 24, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 36.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 36.8s, 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: 256, DAG_COMPRESSION_RETAINED_NODES: 76, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 554]: Loop Invariant Derived loop invariant: (((((((((((((((((length <= 2147483646 && 0 <= list) && 0 <= #NULL) && 0 <= plist) && #NULL <= 0) && 0 <= item) && 1 <= c) && 0 <= list) && 0 <= plist) && item <= 0) && list <= 0) && plist <= 0) && #NULL <= 0) && 0 <= plist) && 0 <= plist) && 0 <= #NULL) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) || (0 <= c + 2147483648 && length <= 0) - InvariantResult [Line: 543]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 8 <= c) && 0 <= item) && length <= 8) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 10 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && length <= 10) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && length < 2147483639) && 0 <= plist) && list == 0) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && 13 <= c) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 0 <= item) && length <= 4) && 0 <= list) && 0 <= plist) && item <= 0) && 4 <= c) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && length < 2147483641) && 15 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 19 <= c) && 0 <= item) && length < 2147483645) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 18 <= c) && 0 <= plist) && list == 0) && 0 <= item) && 0 <= list) && length < 2147483644) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && length <= 2) && 0 <= plist) && #NULL == 0) && 2 <= c) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 17 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && length < 2147483643) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((list == 0 && c == 0) && 0 <= list) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length == 0) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && length < 2147483642) && 16 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && length <= 3) && 0 <= plist) && list == 0) && 3 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 6 <= c) && length <= 6) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 5 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length <= 5) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 14 <= c) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && length < 2147483640) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && length <= 9) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && 9 <= c) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 11 <= c) && length < 2147483637) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && length < 2147483638) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 12 <= c) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && length <= 1) && 0 <= plist) && list == 0) && 0 <= item) && 1 <= c) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && 0 <= plist) && #NULL == 0) && 0 <= plist) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0)) || ((((((((((((((((c <= 19 && 0 <= plist) && list == 0) && 0 <= item) && 0 <= list) && 0 <= plist) && item <= 0) && plist <= 0) && 1 <= length) && length <= 7) && 0 <= plist) && #NULL == 0) && 0 <= plist) && 7 <= c) && plist <= 0) && 0 <= unknown-#StackHeapBarrier-unknown) && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2022-12-14 09:30:41,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed091705-2b5b-45a1-84f8-b361d1151c04/bin/utaipan-gh47qXpMRh/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