./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112107fc5c716e652a88d8f7f89344593e9707a3eff2542706a71844f3fcba7a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:14:08,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:14:08,538 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:14:08,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:14:08,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:14:08,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:14:08,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:14:08,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:14:08,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:14:08,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:14:08,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:14:08,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:14:08,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:14:08,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:14:08,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:14:08,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:14:08,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:14:08,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:14:08,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:14:08,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:14:08,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:14:08,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:14:08,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:14:08,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:14:08,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:14:08,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:14:08,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:14:08,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:14:08,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:14:08,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:14:08,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:14:08,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:14:08,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:14:08,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:14:08,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:14:08,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:14:08,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:14:08,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:14:08,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:14:08,667 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:14:08,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:14:08,669 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:14:08,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:14:08,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:14:08,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:14:08,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:14:08,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:14:08,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:14:08,707 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:14:08,707 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:14:08,707 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:14:08,707 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:14:08,708 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:14:08,708 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:14:08,708 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:14:08,709 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:14:08,709 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:14:08,709 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:14:08,709 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:14:08,710 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:14:08,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:14:08,711 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:14:08,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:14:08,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:14:08,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:14:08,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:14:08,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:14:08,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:14:08,713 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:14:08,713 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:14:08,714 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:14:08,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:14:08,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:14:08,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:14:08,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:08,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:14:08,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:14:08,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:14:08,716 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:14:08,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:14:08,716 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:14:08,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:14:08,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:14:08,717 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112107fc5c716e652a88d8f7f89344593e9707a3eff2542706a71844f3fcba7a [2021-11-23 02:14:09,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:14:09,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:14:09,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:14:09,071 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:14:09,072 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:14:09,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2021-11-23 02:14:09,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/data/37b63b981/36a7aec1424b4c22927eba037e8d7a99/FLAG37bf391e5 [2021-11-23 02:14:09,759 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:14:09,760 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c [2021-11-23 02:14:09,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/data/37b63b981/36a7aec1424b4c22927eba037e8d7a99/FLAG37bf391e5 [2021-11-23 02:14:10,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/data/37b63b981/36a7aec1424b4c22927eba037e8d7a99 [2021-11-23 02:14:10,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:14:10,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:14:10,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:10,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:14:10,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:14:10,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58fafbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10, skipping insertion in model container [2021-11-23 02:14:10,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:14:10,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:14:10,395 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c[546,559] [2021-11-23 02:14:10,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:10,432 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:14:10,444 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound10.c[546,559] [2021-11-23 02:14:10,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:14:10,465 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:14:10,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10 WrapperNode [2021-11-23 02:14:10,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:14:10,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:10,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:14:10,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:14:10,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,507 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2021-11-23 02:14:10,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:14:10,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:14:10,508 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:14:10,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:14:10,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:14:10,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:14:10,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:14:10,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:14:10,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (1/1) ... [2021-11-23 02:14:10,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:14:10,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:10,589 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:14:10,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:14:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:14:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:14:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:14:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:14:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:14:10,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:14:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:14:10,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:14:10,706 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:14:10,709 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:14:10,848 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:14:10,871 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:14:10,871 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:14:10,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:10 BoogieIcfgContainer [2021-11-23 02:14:10,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:14:10,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:14:10,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:14:10,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:14:10,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:14:10" (1/3) ... [2021-11-23 02:14:10,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eaaf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:10, skipping insertion in model container [2021-11-23 02:14:10,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:14:10" (2/3) ... [2021-11-23 02:14:10,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eaaf14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:14:10, skipping insertion in model container [2021-11-23 02:14:10,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:10" (3/3) ... [2021-11-23 02:14:10,886 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound10.c [2021-11-23 02:14:10,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:14:10,893 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:14:10,956 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:14:10,966 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:14:10,966 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:14:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:14:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:14:10,995 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:10,996 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:10,997 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1517355578, now seen corresponding path program 1 times [2021-11-23 02:14:11,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:11,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773568314] [2021-11-23 02:14:11,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:11,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:11,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:11,205 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:11,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773568314] [2021-11-23 02:14:11,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773568314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:11,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:11,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:14:11,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783029343] [2021-11-23 02:14:11,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:11,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:14:11,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:11,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:14:11,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:11,257 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:14:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:11,291 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2021-11-23 02:14:11,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:14:11,294 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-23 02:14:11,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:11,304 INFO L225 Difference]: With dead ends: 34 [2021-11-23 02:14:11,304 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 02:14:11,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:14:11,313 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:11,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:14:11,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 02:14:11,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 02:14:11,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:14:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-23 02:14:11,364 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 14 [2021-11-23 02:14:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:11,366 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-23 02:14:11,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:14:11,367 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-23 02:14:11,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:14:11,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:11,369 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:11,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:14:11,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:11,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1135881823, now seen corresponding path program 1 times [2021-11-23 02:14:11,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:11,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68533525] [2021-11-23 02:14:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:11,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:11,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:14:11,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1414623538] [2021-11-23 02:14:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:11,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:11,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:11,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:11,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:14:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:11,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:14:11,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:11,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:14:11,795 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:11,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68533525] [2021-11-23 02:14:11,796 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:14:11,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414623538] [2021-11-23 02:14:11,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414623538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:11,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:11,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:14:11,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217846395] [2021-11-23 02:14:11,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:11,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:14:11,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:11,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:14:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:14:11,816 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:14:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:11,928 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2021-11-23 02:14:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:14:11,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-23 02:14:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:11,932 INFO L225 Difference]: With dead ends: 29 [2021-11-23 02:14:11,933 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 02:14:11,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:14:11,937 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:11,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 02:14:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-23 02:14:11,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:14:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-11-23 02:14:11,958 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2021-11-23 02:14:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:11,959 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-11-23 02:14:11,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:14:11,961 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-11-23 02:14:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 02:14:11,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:11,962 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:11,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:12,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 02:14:12,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:12,176 INFO L85 PathProgramCache]: Analyzing trace with hash 769061280, now seen corresponding path program 1 times [2021-11-23 02:14:12,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:12,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392486604] [2021-11-23 02:14:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:12,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:12,207 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:14:12,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604072534] [2021-11-23 02:14:12,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:12,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:12,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:12,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:12,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:14:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:12,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:14:12,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:12,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:14:12,337 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:12,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392486604] [2021-11-23 02:14:12,337 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:14:12,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604072534] [2021-11-23 02:14:12,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604072534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:12,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:14:12,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:14:12,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228932624] [2021-11-23 02:14:12,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:12,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:14:12,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:12,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:14:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:14:12,341 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:14:12,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:12,361 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-11-23 02:14:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:14:12,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-23 02:14:12,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:12,365 INFO L225 Difference]: With dead ends: 33 [2021-11-23 02:14:12,365 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 02:14:12,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:14:12,367 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:12,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:14:12,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 02:14:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 02:14:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:14:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-23 02:14:12,377 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2021-11-23 02:14:12,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:12,378 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-23 02:14:12,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:14:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-23 02:14:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:14:12,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:12,380 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:12,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:12,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:12,599 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:12,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:12,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1485105903, now seen corresponding path program 1 times [2021-11-23 02:14:12,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:12,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014664662] [2021-11-23 02:14:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:12,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:12,617 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:14:12,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622024685] [2021-11-23 02:14:12,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:12,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:12,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:12,644 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:12,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:14:12,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:12,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:14:12,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:12,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:12,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:13,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:13,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:13,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014664662] [2021-11-23 02:14:13,228 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:14:13,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622024685] [2021-11-23 02:14:13,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622024685] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:14:13,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1878044502] [2021-11-23 02:14:13,254 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:14:13,254 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:13,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:13,268 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:13,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:14:14,023 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2021-11-23 02:14:14,054 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2021-11-23 02:14:14,121 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:15,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1878044502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:14:15,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:14:15,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 8] total 22 [2021-11-23 02:14:15,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287349572] [2021-11-23 02:14:15,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:15,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 02:14:15,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 02:14:15,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:14:15,987 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:14:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:16,188 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-11-23 02:14:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 02:14:16,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2021-11-23 02:14:16,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:16,193 INFO L225 Difference]: With dead ends: 34 [2021-11-23 02:14:16,193 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:14:16,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-11-23 02:14:16,195 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:16,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 57 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 18 Unchecked, 0.2s Time] [2021-11-23 02:14:16,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:14:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 02:14:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:14:16,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-23 02:14:16,205 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2021-11-23 02:14:16,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:16,206 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-23 02:14:16,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:14:16,206 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-23 02:14:16,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 02:14:16,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:16,207 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:16,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:16,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:16,408 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:16,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 101792437, now seen corresponding path program 1 times [2021-11-23 02:14:16,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:16,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271143688] [2021-11-23 02:14:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:16,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:16,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:14:16,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379056427] [2021-11-23 02:14:16,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:16,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:16,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:16,431 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:16,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:14:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:16,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:14:16,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:16,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:16,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:16,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271143688] [2021-11-23 02:14:16,945 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:14:16,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379056427] [2021-11-23 02:14:16,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379056427] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-23 02:14:16,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:14:16,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-23 02:14:16,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611545504] [2021-11-23 02:14:16,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:14:16,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:14:16,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:16,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:14:16,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:14:16,948 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 02:14:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:17,111 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2021-11-23 02:14:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:14:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-11-23 02:14:17,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:17,114 INFO L225 Difference]: With dead ends: 32 [2021-11-23 02:14:17,114 INFO L226 Difference]: Without dead ends: 28 [2021-11-23 02:14:17,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:14:17,116 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:17,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:17,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-23 02:14:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-23 02:14:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:14:17,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-23 02:14:17,128 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2021-11-23 02:14:17,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:17,128 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-23 02:14:17,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 02:14:17,129 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-23 02:14:17,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:14:17,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:17,131 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:17,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:17,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:17,335 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:17,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:17,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1222938614, now seen corresponding path program 1 times [2021-11-23 02:14:17,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:17,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613864724] [2021-11-23 02:14:17,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:17,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:17,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:14:17,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [786498596] [2021-11-23 02:14:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:17,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:17,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:17,351 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:17,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:14:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:17,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:14:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:17,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:14:17,576 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:17,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613864724] [2021-11-23 02:14:17,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:14:17,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786498596] [2021-11-23 02:14:17,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786498596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:14:17,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658437422] [2021-11-23 02:14:17,581 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:14:17,581 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:17,581 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:17,582 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:17,582 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:14:19,138 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 59 for LOIs [2021-11-23 02:14:19,344 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2021-11-23 02:14:19,389 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:20,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '925#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:14:20,737 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:14:20,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:14:20,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-11-23 02:14:20,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135742024] [2021-11-23 02:14:20,738 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:14:20,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:14:20,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:14:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2021-11-23 02:14:20,740 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:14:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:20,842 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2021-11-23 02:14:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 02:14:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-11-23 02:14:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:20,844 INFO L225 Difference]: With dead ends: 64 [2021-11-23 02:14:20,844 INFO L226 Difference]: Without dead ends: 58 [2021-11-23 02:14:20,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:14:20,846 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:20,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 96 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:14:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-23 02:14:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 46. [2021-11-23 02:14:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-23 02:14:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-11-23 02:14:20,858 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 23 [2021-11-23 02:14:20,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:20,858 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-11-23 02:14:20,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-23 02:14:20,859 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-11-23 02:14:20,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:14:20,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:14:20,860 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:20,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:21,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:21,085 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:14:21,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:14:21,086 INFO L85 PathProgramCache]: Analyzing trace with hash 390558169, now seen corresponding path program 1 times [2021-11-23 02:14:21,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:14:21,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236215680] [2021-11-23 02:14:21,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:21,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:14:21,097 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:14:21,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051671015] [2021-11-23 02:14:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:14:21,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:14:21,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:14:21,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:14:21,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:14:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:14:21,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 02:14:21,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:14:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:14:21,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:14:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 02:14:21,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:14:21,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236215680] [2021-11-23 02:14:21,429 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:14:21,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051671015] [2021-11-23 02:14:21,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051671015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:14:21,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [664820790] [2021-11-23 02:14:21,434 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-23 02:14:21,434 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:14:21,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:14:21,435 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:14:21,435 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:14:22,299 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 62 for LOIs [2021-11-23 02:14:22,412 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 69 for LOIs [2021-11-23 02:14:22,446 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:14:23,708 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1276#(and (< ~counter~0 11) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 02:14:23,709 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:14:23,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 02:14:23,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-11-23 02:14:23,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419194090] [2021-11-23 02:14:23,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 02:14:23,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:14:23,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:14:23,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:14:23,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-11-23 02:14:23,712 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:14:23,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:14:23,815 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-11-23 02:14:23,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:14:23,816 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-11-23 02:14:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:14:23,817 INFO L225 Difference]: With dead ends: 46 [2021-11-23 02:14:23,817 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 02:14:23,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2021-11-23 02:14:23,819 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:14:23,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 50 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2021-11-23 02:14:23,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 02:14:23,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 02:14:23,821 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) [2021-11-23 02:14:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 02:14:23,822 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-11-23 02:14:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:14:23,822 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 02:14:23,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 9 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 02:14:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 02:14:23,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 02:14:23,826 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:14:23,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:14:24,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:14:24,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 02:14:24,276 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 02:14:24,277 INFO L854 garLoopResultBuilder]: At program point L35-3(lines 35 45) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-23 02:14:24,277 INFO L858 garLoopResultBuilder]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2021-11-23 02:14:24,277 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-23 02:14:24,277 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-23 02:14:24,277 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 45) no Hoare annotation was computed. [2021-11-23 02:14:24,277 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 02:14:24,278 INFO L854 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~z~0#1| 2147483648)) (= 2 (select |#length| 1)) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= (select |#valid| 3) 1) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:14:24,278 INFO L854 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (<= 1 |ULTIMATE.start_main_~z~0#1|) 1 0) 0)) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~k~0#1| 2147483648)) (<= |ULTIMATE.start_main_~z~0#1| 2147483647) (= 2 (select |#length| 1)) (<= |ULTIMATE.start_main_~k~0#1| 2147483647) (= (select |#valid| 3) 1) (= ~counter~0 0) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= 10 (select |#length| 2)) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 02:14:24,278 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~x~0#1| 1)) [2021-11-23 02:14:24,278 INFO L861 garLoopResultBuilder]: At program point L49-1(line 49) the Hoare annotation is: true [2021-11-23 02:14:24,278 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2021-11-23 02:14:24,278 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2021-11-23 02:14:24,278 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 12 14) no Hoare annotation was computed. [2021-11-23 02:14:24,278 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-11-23 02:14:24,278 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-11-23 02:14:24,279 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2021-11-23 02:14:24,279 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 15 21) no Hoare annotation was computed. [2021-11-23 02:14:24,279 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 21) no Hoare annotation was computed. [2021-11-23 02:14:24,279 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-23 02:14:24,282 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:14:24,283 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:14:24,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:14:24 BoogieIcfgContainer [2021-11-23 02:14:24,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:14:24,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:14:24,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:14:24,310 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:14:24,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:14:10" (3/4) ... [2021-11-23 02:14:24,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 02:14:24,321 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-23 02:14:24,321 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 02:14:24,328 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-11-23 02:14:24,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 02:14:24,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 02:14:24,329 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 02:14:24,365 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:14:24,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:14:24,366 INFO L158 Benchmark]: Toolchain (without parser) took 14220.30ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 86.9MB in the beginning and 47.7MB in the end (delta: 39.1MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2021-11-23 02:14:24,367 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:14:24,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.21ms. Allocated memory is still 119.5MB. Free memory was 86.6MB in the beginning and 96.2MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 02:14:24,368 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.08ms. Allocated memory is still 119.5MB. Free memory was 95.8MB in the beginning and 94.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:14:24,368 INFO L158 Benchmark]: Boogie Preprocessor took 42.32ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 93.7MB in the end (delta: 854.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:14:24,369 INFO L158 Benchmark]: RCFGBuilder took 323.41ms. Allocated memory is still 119.5MB. Free memory was 93.3MB in the beginning and 83.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:14:24,369 INFO L158 Benchmark]: TraceAbstraction took 13432.00ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 83.2MB in the beginning and 49.8MB in the end (delta: 33.3MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. [2021-11-23 02:14:24,370 INFO L158 Benchmark]: Witness Printer took 56.13ms. Allocated memory is still 153.1MB. Free memory was 49.8MB in the beginning and 47.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:14:24,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 81.8MB. Free memory is still 36.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 318.21ms. Allocated memory is still 119.5MB. Free memory was 86.6MB in the beginning and 96.2MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.08ms. Allocated memory is still 119.5MB. Free memory was 95.8MB in the beginning and 94.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.32ms. Allocated memory is still 119.5MB. Free memory was 94.5MB in the beginning and 93.7MB in the end (delta: 854.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 323.41ms. Allocated memory is still 119.5MB. Free memory was 93.3MB in the beginning and 83.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13432.00ms. Allocated memory was 119.5MB in the beginning and 153.1MB in the end (delta: 33.6MB). Free memory was 83.2MB in the beginning and 49.8MB in the end (delta: 33.3MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. * Witness Printer took 56.13ms. Allocated memory is still 153.1MB. Free memory was 49.8MB in the beginning and 47.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.3s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 383 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 296 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 241 IncrementalHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 107 mSDtfsCounter, 241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 291 GetRequests, 203 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=6, InterpolantAutomatonStates: 46, 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, 7 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 18 PreInvPairs, 30 NumberOfFragments, 186 HoareAnnotationTreeSize, 18 FomulaSimplifications, 299 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 611 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 222 ConstructedInterpolants, 2 QuantifiedInterpolants, 616 SizeOfPredicates, 10 NumberOfNonLiveVariables, 493 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 57/68 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 0.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 15, TOOLS_POST_TIME: 0.2s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 31, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 48, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, 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: 152, DAG_COMPRESSION_RETAINED_NODES: 52, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: x + y == x * z + 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 02:14:24,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df246291-d0c0-4670-8eba-9771bed09211/bin/utaipan-EQgc7hIp5V/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