./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW --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 382beab9cdcef42f6594628efe520684fdbc8c72ada26cb53ddf4918b8957d49 --- 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-4e7fbc6 [2022-11-23 16:01:46,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 16:01:46,402 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 16:01:46,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 16:01:46,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 16:01:46,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 16:01:46,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 16:01:46,446 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 16:01:46,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 16:01:46,455 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 16:01:46,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 16:01:46,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 16:01:46,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 16:01:46,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 16:01:46,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 16:01:46,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 16:01:46,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 16:01:46,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 16:01:46,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 16:01:46,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 16:01:46,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 16:01:46,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 16:01:46,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 16:01:46,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 16:01:46,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 16:01:46,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 16:01:46,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 16:01:46,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 16:01:46,488 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 16:01:46,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 16:01:46,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 16:01:46,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 16:01:46,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 16:01:46,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 16:01:46,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 16:01:46,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 16:01:46,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 16:01:46,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 16:01:46,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 16:01:46,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 16:01:46,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 16:01:46,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-23 16:01:46,530 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 16:01:46,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 16:01:46,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 16:01:46,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 16:01:46,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 16:01:46,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 16:01:46,532 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 16:01:46,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 16:01:46,533 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 16:01:46,533 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 16:01:46,533 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 16:01:46,533 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 16:01:46,533 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 16:01:46,534 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 16:01:46,534 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 16:01:46,534 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 16:01:46,534 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 16:01:46,535 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 16:01:46,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 16:01:46,536 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 16:01:46,536 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 16:01:46,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 16:01:46,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 16:01:46,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 16:01:46,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 16:01:46,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 16:01:46,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 16:01:46,537 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-23 16:01:46,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 16:01:46,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 16:01:46,538 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 16:01:46,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 16:01:46,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 16:01:46,539 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 16:01:46,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:01:46,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 16:01:46,539 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 16:01:46,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 16:01:46,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 16:01:46,540 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 16:01:46,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 16:01:46,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 16:01:46,541 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 16:01:46,541 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_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 382beab9cdcef42f6594628efe520684fdbc8c72ada26cb53ddf4918b8957d49 [2022-11-23 16:01:46,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 16:01:46,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 16:01:46,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 16:01:46,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 16:01:46,881 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 16:01:46,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2022-11-23 16:01:49,935 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 16:01:50,183 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 16:01:50,186 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/sv-benchmarks/c/array-memsafety/cstrcmp-alloca-2.i [2022-11-23 16:01:50,201 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/data/4eac0b8d1/8c3c9c38a493491ba097447888121b26/FLAG19cf7801a [2022-11-23 16:01:50,216 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/data/4eac0b8d1/8c3c9c38a493491ba097447888121b26 [2022-11-23 16:01:50,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 16:01:50,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 16:01:50,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 16:01:50,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 16:01:50,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 16:01:50,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3789da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50, skipping insertion in model container [2022-11-23 16:01:50,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 16:01:50,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 16:01:50,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:01:50,645 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 16:01:50,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 16:01:50,708 INFO L208 MainTranslator]: Completed translation [2022-11-23 16:01:50,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50 WrapperNode [2022-11-23 16:01:50,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 16:01:50,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 16:01:50,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 16:01:50,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 16:01:50,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,752 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2022-11-23 16:01:50,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 16:01:50,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 16:01:50,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 16:01:50,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 16:01:50,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 16:01:50,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 16:01:50,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 16:01:50,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 16:01:50,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (1/1) ... [2022-11-23 16:01:50,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 16:01:50,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:50,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 16:01:50,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 16:01:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 16:01:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 16:01:50,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 16:01:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 16:01:50,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 16:01:50,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 16:01:51,043 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 16:01:51,045 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 16:01:51,274 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 16:01:51,368 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 16:01:51,368 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 16:01:51,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:01:51 BoogieIcfgContainer [2022-11-23 16:01:51,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 16:01:51,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 16:01:51,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 16:01:51,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 16:01:51,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 04:01:50" (1/3) ... [2022-11-23 16:01:51,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671cdd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:01:51, skipping insertion in model container [2022-11-23 16:01:51,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 04:01:50" (2/3) ... [2022-11-23 16:01:51,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@671cdd05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 04:01:51, skipping insertion in model container [2022-11-23 16:01:51,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:01:51" (3/3) ... [2022-11-23 16:01:51,381 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrcmp-alloca-2.i [2022-11-23 16:01:51,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 16:01:51,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-23 16:01:51,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 16:01:51,459 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;@733b3f4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 16:01:51,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-11-23 16:01:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-23 16:01:51,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:51,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-23 16:01:51,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash 4142, now seen corresponding path program 1 times [2022-11-23 16:01:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:51,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822338904] [2022-11-23 16:01:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:51,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:51,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:51,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822338904] [2022-11-23 16:01:51,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822338904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:51,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:51,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:01:51,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27284552] [2022-11-23 16:01:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:51,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:01:51,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:01:51,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:51,905 INFO L87 Difference]: Start difference. First operand has 32 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:51,983 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2022-11-23 16:01:51,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:01:51,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2022-11-23 16:01:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:51,994 INFO L225 Difference]: With dead ends: 53 [2022-11-23 16:01:51,994 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 16:01:51,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,003 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:52,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 20 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:52,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 16:01:52,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 16:01:52,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.6875) internal successors, (27), 25 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) [2022-11-23 16:01:52,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-11-23 16:01:52,044 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 2 [2022-11-23 16:01:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:52,045 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-11-23 16:01:52,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-11-23 16:01:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 16:01:52,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:52,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 16:01:52,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 16:01:52,048 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash 128454, now seen corresponding path program 1 times [2022-11-23 16:01:52,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:52,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213901656] [2022-11-23 16:01:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:52,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:52,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213901656] [2022-11-23 16:01:52,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213901656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:52,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:52,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:01:52,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187739063] [2022-11-23 16:01:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:52,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:01:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:01:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,162 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:52,179 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2022-11-23 16:01:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:01:52,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 16:01:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:52,181 INFO L225 Difference]: With dead ends: 26 [2022-11-23 16:01:52,181 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 16:01:52,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,183 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:52,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:52,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 16:01:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-23 16:01:52,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.5625) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-23 16:01:52,188 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 3 [2022-11-23 16:01:52,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:52,188 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-23 16:01:52,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,189 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-23 16:01:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 16:01:52,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:52,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 16:01:52,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 16:01:52,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:52,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:52,190 INFO L85 PathProgramCache]: Analyzing trace with hash 123448199, now seen corresponding path program 1 times [2022-11-23 16:01:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:52,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007964420] [2022-11-23 16:01:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:52,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:52,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:52,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007964420] [2022-11-23 16:01:52,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007964420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:52,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:52,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:01:52,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913499500] [2022-11-23 16:01:52,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:52,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:01:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:52,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:01:52,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:01:52,346 INFO L87 Difference]: Start difference. First operand 24 states and 25 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) [2022-11-23 16:01:52,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:52,425 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2022-11-23 16:01:52,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:01:52,425 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 [2022-11-23 16:01:52,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:52,426 INFO L225 Difference]: With dead ends: 47 [2022-11-23 16:01:52,427 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 16:01:52,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:01:52,428 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:52,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 52 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 16:01:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2022-11-23 16:01:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 27 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) [2022-11-23 16:01:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2022-11-23 16:01:52,436 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 5 [2022-11-23 16:01:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:52,436 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2022-11-23 16:01:52,436 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) [2022-11-23 16:01:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2022-11-23 16:01:52,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:01:52,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:52,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:01:52,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 16:01:52,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:52,446 INFO L85 PathProgramCache]: Analyzing trace with hash -468139178, now seen corresponding path program 1 times [2022-11-23 16:01:52,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:52,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923851236] [2022-11-23 16:01:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:52,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:52,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:52,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923851236] [2022-11-23 16:01:52,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923851236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:52,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:52,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:01:52,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508091859] [2022-11-23 16:01:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:52,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:01:52,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:52,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:01:52,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,533 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:52,553 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-23 16:01:52,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:01:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 16:01:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:52,555 INFO L225 Difference]: With dead ends: 28 [2022-11-23 16:01:52,555 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 16:01:52,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,556 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:52,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 14 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:52,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 16:01:52,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 16:01:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.4) 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) [2022-11-23 16:01:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-23 16:01:52,562 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 6 [2022-11-23 16:01:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:52,562 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-23 16:01:52,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-23 16:01:52,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 16:01:52,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:52,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 16:01:52,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 16:01:52,564 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:52,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:52,565 INFO L85 PathProgramCache]: Analyzing trace with hash -468073064, now seen corresponding path program 1 times [2022-11-23 16:01:52,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:52,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225257318] [2022-11-23 16:01:52,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:52,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:52,659 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:52,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225257318] [2022-11-23 16:01:52,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225257318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:52,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:52,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 16:01:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497495087] [2022-11-23 16:01:52,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:52,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:01:52,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:52,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:01:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:01:52,666 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:52,734 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2022-11-23 16:01:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 16:01:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 16:01:52,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:52,737 INFO L225 Difference]: With dead ends: 42 [2022-11-23 16:01:52,738 INFO L226 Difference]: Without dead ends: 41 [2022-11-23 16:01:52,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:01:52,743 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 47 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 [2022-11-23 16:01:52,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 47 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:52,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-23 16:01:52,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 27. [2022-11-23 16:01:52,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 26 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) [2022-11-23 16:01:52,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2022-11-23 16:01:52,749 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 6 [2022-11-23 16:01:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:52,749 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2022-11-23 16:01:52,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2022-11-23 16:01:52,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 16:01:52,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:52,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:52,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 16:01:52,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1627412556, now seen corresponding path program 1 times [2022-11-23 16:01:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:52,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820726777] [2022-11-23 16:01:52,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:52,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:52,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:52,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820726777] [2022-11-23 16:01:52,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820726777] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:52,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:52,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-23 16:01:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138560061] [2022-11-23 16:01:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:52,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 16:01:52,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 16:01:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,897 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:52,914 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2022-11-23 16:01:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 16:01:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 16:01:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:52,915 INFO L225 Difference]: With dead ends: 27 [2022-11-23 16:01:52,916 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 16:01:52,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 16:01:52,917 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:52,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 16:01:52,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 16:01:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 20 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-11-23 16:01:52,922 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 7 [2022-11-23 16:01:52,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:52,923 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-11-23 16:01:52,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:52,923 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-11-23 16:01:52,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 16:01:52,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:52,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 16:01:52,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash -575366676, now seen corresponding path program 1 times [2022-11-23 16:01:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:52,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640266153] [2022-11-23 16:01:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:52,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:52,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:52,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640266153] [2022-11-23 16:01:52,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640266153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:52,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 16:01:52,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 16:01:52,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958992779] [2022-11-23 16:01:52,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:52,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:01:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:52,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:01:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 16:01:52,984 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:53,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:53,042 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2022-11-23 16:01:53,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:01:53,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 16:01:53,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:53,044 INFO L225 Difference]: With dead ends: 28 [2022-11-23 16:01:53,044 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 16:01:53,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 16:01:53,045 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:53,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:53,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 16:01:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 16:01:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2727272727272727) 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) [2022-11-23 16:01:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-11-23 16:01:53,054 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 9 [2022-11-23 16:01:53,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:53,055 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-11-23 16:01:53,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:53,055 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-11-23 16:01:53,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 16:01:53,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:53,056 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2022-11-23 16:01:53,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 16:01:53,064 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:53,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:53,065 INFO L85 PathProgramCache]: Analyzing trace with hash 270845595, now seen corresponding path program 1 times [2022-11-23 16:01:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:53,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129853081] [2022-11-23 16:01:53,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:53,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:53,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:53,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129853081] [2022-11-23 16:01:53,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129853081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:53,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789787823] [2022-11-23 16:01:53,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:53,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:53,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:53,209 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:53,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 16:01:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:53,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:01:53,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:53,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:01:53,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789787823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:53,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:01:53,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-23 16:01:53,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223742595] [2022-11-23 16:01:53,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:53,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:01:53,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:53,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:01:53,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-23 16:01:53,394 INFO L87 Difference]: Start difference. First operand 26 states and 28 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) [2022-11-23 16:01:53,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:53,452 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2022-11-23 16:01:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:01:53,453 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 [2022-11-23 16:01:53,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:53,454 INFO L225 Difference]: With dead ends: 39 [2022-11-23 16:01:53,454 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 16:01:53,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-23 16:01:53,455 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:53,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 45 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 16:01:53,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 25. [2022-11-23 16:01:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.2272727272727273) 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) [2022-11-23 16:01:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-23 16:01:53,460 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 10 [2022-11-23 16:01:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:53,461 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-23 16:01:53,461 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) [2022-11-23 16:01:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-23 16:01:53,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 16:01:53,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:53,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1] [2022-11-23 16:01:53,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:53,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:53,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:53,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:53,668 INFO L85 PathProgramCache]: Analyzing trace with hash -193721084, now seen corresponding path program 1 times [2022-11-23 16:01:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:53,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593127741] [2022-11-23 16:01:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:53,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:53,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:53,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593127741] [2022-11-23 16:01:53,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593127741] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:53,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027117936] [2022-11-23 16:01:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:53,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:53,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:53,814 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:53,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 16:01:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:53,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:01:53,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:53,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:53,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:54,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:54,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027117936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:54,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [346076343] [2022-11-23 16:01:54,067 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-11-23 16:01:54,068 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:54,071 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:54,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:54,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:54,213 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 16:01:54,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 19 [2022-11-23 16:01:54,248 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 16:01:54,248 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 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-23 16:01:54,358 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 13 treesize of output 9 [2022-11-23 16:01:54,559 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 13 treesize of output 9 [2022-11-23 16:01:54,657 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 13 treesize of output 9 [2022-11-23 16:01:54,694 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:55,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [346076343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:55,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:55,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 13 [2022-11-23 16:01:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326913013] [2022-11-23 16:01:55,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:55,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 16:01:55,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 16:01:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-23 16:01:55,081 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:55,117 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-11-23 16:01:55,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 16:01:55,120 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 16:01:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:55,121 INFO L225 Difference]: With dead ends: 25 [2022-11-23 16:01:55,121 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 16:01:55,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2022-11-23 16:01:55,122 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 11 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:55,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:55,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 16:01:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2022-11-23 16:01:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-11-23 16:01:55,131 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2022-11-23 16:01:55,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:55,132 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-11-23 16:01:55,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:55,132 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-11-23 16:01:55,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 16:01:55,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:55,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:55,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:55,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 16:01:55,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:55,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1070229283, now seen corresponding path program 1 times [2022-11-23 16:01:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:55,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378402623] [2022-11-23 16:01:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:55,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:55,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378402623] [2022-11-23 16:01:55,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378402623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:55,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426621684] [2022-11-23 16:01:55,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:55,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:55,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:55,394 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:55,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 16:01:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:55,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:01:55,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:55,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:55,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 16:01:55,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426621684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:55,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 16:01:55,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-23 16:01:55,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293568081] [2022-11-23 16:01:55,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:55,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 16:01:55,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 16:01:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 16:01:55,497 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-23 16:01:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:55,535 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-23 16:01:55,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:01:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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 14 [2022-11-23 16:01:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:55,536 INFO L225 Difference]: With dead ends: 19 [2022-11-23 16:01:55,537 INFO L226 Difference]: Without dead ends: 18 [2022-11-23 16:01:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 16:01:55,538 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:55,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 16:01:55,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-23 16:01:55,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-23 16:01:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:55,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-23 16:01:55,542 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2022-11-23 16:01:55,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:55,559 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-23 16:01:55,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 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) [2022-11-23 16:01:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-23 16:01:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 16:01:55,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:55,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:55,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:55,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 16:01:55,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:55,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1182630510, now seen corresponding path program 1 times [2022-11-23 16:01:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:55,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272827152] [2022-11-23 16:01:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:55,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:55,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:55,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272827152] [2022-11-23 16:01:55,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272827152] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:55,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95027995] [2022-11-23 16:01:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:55,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:55,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:55,832 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:55,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 16:01:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:55,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:01:55,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:55,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:55,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:55,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95027995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:55,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [217342428] [2022-11-23 16:01:55,996 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-11-23 16:01:55,996 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:55,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:55,997 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:55,997 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:56,051 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 16:01:56,052 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 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-23 16:01:56,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2022-11-23 16:01:56,171 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 13 treesize of output 9 [2022-11-23 16:01:56,258 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 13 treesize of output 9 [2022-11-23 16:01:56,296 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 13 treesize of output 9 [2022-11-23 16:01:56,343 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:57,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [217342428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:57,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:57,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5, 5] total 16 [2022-11-23 16:01:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987359811] [2022-11-23 16:01:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:57,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:01:57,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:57,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:01:57,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-23 16:01:57,118 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:57,639 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2022-11-23 16:01:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 16:01:57,640 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 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 15 [2022-11-23 16:01:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:57,640 INFO L225 Difference]: With dead ends: 35 [2022-11-23 16:01:57,641 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 16:01:57,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-23 16:01:57,642 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:57,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 13 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 16:01:57,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2022-11-23 16:01:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-23 16:01:57,647 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2022-11-23 16:01:57,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:57,648 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-23 16:01:57,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:57,648 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-23 16:01:57,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 16:01:57,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 16:01:57,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:01:57,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:57,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:57,860 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2022-11-23 16:01:57,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 16:01:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -607924314, now seen corresponding path program 1 times [2022-11-23 16:01:57,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 16:01:57,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220481840] [2022-11-23 16:01:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 16:01:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 16:01:58,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 16:01:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220481840] [2022-11-23 16:01:58,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220481840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 16:01:58,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408257106] [2022-11-23 16:01:58,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 16:01:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:58,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 16:01:58,017 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 16:01:58,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 16:01:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 16:01:58,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 16:01:58,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 16:01:58,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 16:01:58,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 16:01:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 16:01:58,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408257106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 16:01:58,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1353980940] [2022-11-23 16:01:58,161 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-23 16:01:58,161 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 16:01:58,161 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 16:01:58,161 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 16:01:58,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 16:01:58,227 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 16:01:58,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 19 [2022-11-23 16:01:58,269 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-23 16:01:58,269 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 3 case distinctions, treesize of input 29 treesize of output 29 [2022-11-23 16:01:58,323 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 13 treesize of output 9 [2022-11-23 16:01:58,392 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 13 treesize of output 9 [2022-11-23 16:01:58,446 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 13 treesize of output 9 [2022-11-23 16:01:58,511 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 13 treesize of output 9 [2022-11-23 16:01:58,567 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 13 treesize of output 9 [2022-11-23 16:01:58,631 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 13 treesize of output 9 [2022-11-23 16:01:58,682 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 16:01:59,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1353980940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 16:01:59,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 16:01:59,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5, 5] total 15 [2022-11-23 16:01:59,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872005693] [2022-11-23 16:01:59,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 16:01:59,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 16:01:59,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 16:01:59,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 16:01:59,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-23 16:01:59,443 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-23 16:01:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 16:01:59,703 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-23 16:01:59,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 16:01:59,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 20 [2022-11-23 16:01:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 16:01:59,704 INFO L225 Difference]: With dead ends: 21 [2022-11-23 16:01:59,704 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 16:01:59,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-23 16:01:59,705 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 16:01:59,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 16:01:59,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 16:01:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 16:01:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 16:01:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 16:01:59,707 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2022-11-23 16:01:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 16:01:59,707 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 16:01:59,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2022-11-23 16:01:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 16:01:59,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 16:01:59,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2022-11-23 16:01:59,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2022-11-23 16:01:59,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2022-11-23 16:01:59,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2022-11-23 16:01:59,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2022-11-23 16:01:59,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2022-11-23 16:01:59,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 16:01:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 16:01:59,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 16:02:00,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 548) no Hoare annotation was computed. [2022-11-23 16:02:00,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,461 INFO L899 garLoopResultBuilder]: For program point L548(line 548) no Hoare annotation was computed. [2022-11-23 16:02:00,461 INFO L899 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2022-11-23 16:02:00,461 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 547) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point L537-1(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point L537-2(lines 537 540) no Hoare annotation was computed. [2022-11-23 16:02:00,462 INFO L899 garLoopResultBuilder]: For program point L537-5(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,463 INFO L899 garLoopResultBuilder]: For program point L537-6(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,463 INFO L895 garLoopResultBuilder]: At program point L537-7(lines 537 540) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc13#1.base|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (let ((.cse0 (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|)) (.cse1 (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0)) (.cse2 (<= 0 |#StackHeapBarrier|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~nondetString1~0#1.offset| |ULTIMATE.start_main_~i~0#1|) .cse2) (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~i~0#1|) .cse2))) (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc12#1.offset| 0) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_#t~malloc12#1.base|) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|) (= |#NULL.base| 0)) [2022-11-23 16:02:00,463 INFO L899 garLoopResultBuilder]: For program point L537-8(lines 537 540) no Hoare annotation was computed. [2022-11-23 16:02:00,463 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 547) no Hoare annotation was computed. [2022-11-23 16:02:00,463 INFO L899 garLoopResultBuilder]: For program point L517-3(lines 517 520) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L895 garLoopResultBuilder]: At program point L517-5(lines 517 520) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~length1~0#1|) [2022-11-23 16:02:00,464 INFO L895 garLoopResultBuilder]: At program point L517-6(lines 517 520) the Hoare annotation is: (<= 1 |ULTIMATE.start_main_~length1~0#1|) [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 537) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point L542-1(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point L542-2(lines 542 545) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point L542-5(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point L542-6(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L895 garLoopResultBuilder]: At program point L542-7(lines 542 545) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.offset|) (<= |ULTIMATE.start_main_~nondetString2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~1#1|) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.offset|) (<= 0 |ULTIMATE.start_main_#t~malloc13#1.base|) (<= 1 |ULTIMATE.start_main_~length1~0#1|) (<= 0 |ULTIMATE.start_main_~nondetString1~0#1.base|) (<= 1 |ULTIMATE.start_main_~length2~0#1|) (= |ULTIMATE.start_main_#t~malloc13#1.offset| 0) (<= |ULTIMATE.start_main_~length1~0#1| 2147483647) (not (< (+ |ULTIMATE.start_main_~i~0#1| 1) |ULTIMATE.start_main_~length1~0#1|)) (<= |ULTIMATE.start_main_~nondetString1~0#1.offset| 0) (= |ULTIMATE.start_main_#t~malloc12#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_main_~length2~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_#t~malloc12#1.base|) (<= 0 |ULTIMATE.start_main_~nondetString2~0#1.base|) (= |#NULL.base| 0)) [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point L542-8(lines 542 545) no Hoare annotation was computed. [2022-11-23 16:02:00,464 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 548) no Hoare annotation was computed. [2022-11-23 16:02:00,465 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 542) no Hoare annotation was computed. [2022-11-23 16:02:00,465 INFO L899 garLoopResultBuilder]: For program point L547(line 547) no Hoare annotation was computed. [2022-11-23 16:02:00,471 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 16:02:00,473 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 16:02:00,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 04:02:00 BoogieIcfgContainer [2022-11-23 16:02:00,512 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 16:02:00,512 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 16:02:00,512 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 16:02:00,513 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 16:02:00,513 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 04:01:51" (3/4) ... [2022-11-23 16:02:00,516 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 16:02:00,525 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-23 16:02:00,526 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 16:02:00,526 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 16:02:00,526 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 16:02:00,596 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 16:02:00,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 16:02:00,597 INFO L158 Benchmark]: Toolchain (without parser) took 10376.61ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 148.5MB in the beginning and 230.8MB in the end (delta: -82.3MB). Peak memory consumption was 144.1MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,598 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 16:02:00,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.09ms. Allocated memory is still 182.5MB. Free memory was 148.5MB in the beginning and 140.6MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,602 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.91ms. Allocated memory is still 182.5MB. Free memory was 140.6MB in the beginning and 138.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,602 INFO L158 Benchmark]: Boogie Preprocessor took 26.81ms. Allocated memory is still 182.5MB. Free memory was 138.5MB in the beginning and 136.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,603 INFO L158 Benchmark]: RCFGBuilder took 590.67ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 118.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,603 INFO L158 Benchmark]: TraceAbstraction took 9137.82ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 117.5MB in the beginning and 88.2MB in the end (delta: 29.2MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,603 INFO L158 Benchmark]: Witness Printer took 83.98ms. Allocated memory is still 264.2MB. Free memory was 88.2MB in the beginning and 230.8MB in the end (delta: -142.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 16:02:00,609 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 130.0MB. Free memory is still 97.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.09ms. Allocated memory is still 182.5MB. Free memory was 148.5MB in the beginning and 140.6MB in the end (delta: 7.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.91ms. Allocated memory is still 182.5MB. Free memory was 140.6MB in the beginning and 138.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.81ms. Allocated memory is still 182.5MB. Free memory was 138.5MB in the beginning and 136.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.67ms. Allocated memory is still 182.5MB. Free memory was 136.4MB in the beginning and 118.5MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 9137.82ms. Allocated memory was 182.5MB in the beginning and 264.2MB in the end (delta: 81.8MB). Free memory was 117.5MB in the beginning and 88.2MB in the end (delta: 29.2MB). Peak memory consumption was 114.2MB. Max. memory is 16.1GB. * Witness Printer took 83.98ms. Allocated memory is still 264.2MB. Free memory was 88.2MB in the beginning and 230.8MB in the end (delta: -142.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 537]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 542]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 542]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 542]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 542]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 547]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 547]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 548]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 548]: 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, 32 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 9.0s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 205 mSDsluCounter, 310 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 162 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 239 IncrementalHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 148 mSDtfsCounter, 239 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 112 SyntacticMatches, 12 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 55, 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, 12 MinimizatonAttempts, 52 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 137 HoareAnnotationTreeSize, 4 FomulaSimplifications, 45 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 1131 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 178 NumberOfCodeBlocks, 178 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 204 ConstructedInterpolants, 0 QuantifiedInterpolants, 616 SizeOfPredicates, 10 NumberOfNonLiveVariables, 413 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 20 InterpolantComputations, 9 PerfectInterpolantSequences, 14/70 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: 1.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 27, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 70, TOOLS_POST_TIME: 1.3s, 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: 70, TOOLS_QUANTIFIERELIM_TIME: 1.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.2s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 124, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 2, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 8, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 27, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 0.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 8, 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: 267, DAG_COMPRESSION_RETAINED_NODES: 101, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold - InvariantResult [Line: 542]: Loop Invariant Derived loop invariant: (((((((((((((((((0 <= nondetString2 && nondetString2 <= 0) && 0 <= i) && 0 <= nondetString1) && 0 <= __builtin_alloca (length2 * sizeof(char))) && 1 <= length1) && 0 <= nondetString1) && 1 <= length2) && __builtin_alloca (length2 * sizeof(char)) == 0) && length1 <= 2147483647) && !(i + 1 < length1)) && nondetString1 <= 0) && __builtin_alloca (length1 * sizeof(char)) == 0) && #NULL == 0) && 0 <= unknown-#StackHeapBarrier-unknown) && length2 <= 2147483647) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString2) && #NULL == 0 - InvariantResult [Line: 517]: Loop Invariant Derived loop invariant: 1 <= length1 - InvariantResult [Line: 517]: Loop Invariant Derived loop invariant: 1 <= length1 - InvariantResult [Line: 537]: Loop Invariant Derived loop invariant: (((((((((((((0 <= nondetString1 && 0 <= __builtin_alloca (length2 * sizeof(char))) && 1 <= length1) && 0 <= nondetString1) && 1 <= length2) && __builtin_alloca (length2 * sizeof(char)) == 0) && length1 <= 2147483647) && ((((0 <= nondetString2 && nondetString2 <= 0) && nondetString1 == i) && 0 <= unknown-#StackHeapBarrier-unknown) || (((0 <= nondetString2 && nondetString2 <= 0) && 1 <= i) && 0 <= unknown-#StackHeapBarrier-unknown))) && nondetString1 <= 0) && __builtin_alloca (length1 * sizeof(char)) == 0) && #NULL == 0) && length2 <= 2147483647) && 0 <= __builtin_alloca (length1 * sizeof(char))) && 0 <= nondetString2) && #NULL == 0 RESULT: Ultimate proved your program to be correct! [2022-11-23 16:02:00,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0ee2fb6-1fbf-45e1-aecb-58bf846a3b72/bin/utaipan-Q6hlc19bkW/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