./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8 --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 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:06:18,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:06:18,473 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:06:18,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:06:18,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:06:18,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:06:18,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:06:18,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:06:18,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:06:18,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:06:18,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:06:18,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:06:18,527 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:06:18,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:06:18,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:06:18,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:06:18,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:06:18,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:06:18,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:06:18,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:06:18,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:06:18,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:06:18,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:06:18,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:06:18,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:06:18,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:06:18,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:06:18,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:06:18,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:06:18,583 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:06:18,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:06:18,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:06:18,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:06:18,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:06:18,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:06:18,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:06:18,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:06:18,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:06:18,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:06:18,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:06:18,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:06:18,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:06:18,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:06:18,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:06:18,652 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:06:18,653 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:06:18,653 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:06:18,653 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:06:18,654 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:06:18,654 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:06:18,654 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:06:18,654 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:06:18,663 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:06:18,663 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:06:18,664 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:06:18,664 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:06:18,664 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:06:18,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:06:18,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:06:18,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:06:18,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:06:18,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:06:18,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:06:18,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:06:18,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:06:18,667 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:06:18,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:06:18,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:06:18,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:06:18,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:06:18,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:06:18,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:06:18,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:06:18,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:06:18,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:06:18,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:06:18,671 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:06:18,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:06:18,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:06:18,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:06:18,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:06:18,672 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_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 [2021-11-07 01:06:18,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:06:19,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:06:19,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:06:19,022 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:06:19,023 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:06:19,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2021-11-07 01:06:19,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/data/458e89919/d30533a400694295a0351f6f84881228/FLAG07b5dc671 [2021-11-07 01:06:19,722 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:06:19,723 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2021-11-07 01:06:19,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/data/458e89919/d30533a400694295a0351f6f84881228/FLAG07b5dc671 [2021-11-07 01:06:20,090 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/data/458e89919/d30533a400694295a0351f6f84881228 [2021-11-07 01:06:20,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:06:20,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:06:20,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:20,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:06:20,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:06:20,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6296a441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20, skipping insertion in model container [2021-11-07 01:06:20,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:06:20,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:06:20,343 WARN L228 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_ecc19684-2ae4-4370-b67e-30d4953de3aa/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c[576,589] [2021-11-07 01:06:20,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:20,374 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:06:20,389 WARN L228 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_ecc19684-2ae4-4370-b67e-30d4953de3aa/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c[576,589] [2021-11-07 01:06:20,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:06:20,415 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:06:20,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20 WrapperNode [2021-11-07 01:06:20,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:06:20,416 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:06:20,416 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:06:20,417 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:06:20,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:06:20,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:06:20,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:06:20,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:06:20,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:06:20,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:06:20,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:06:20,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:06:20,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (1/1) ... [2021-11-07 01:06:20,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:06:20,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:20,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:06:20,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:06:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:06:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:06:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:06:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:06:20,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:06:20,940 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-11-07 01:06:20,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:20 BoogieIcfgContainer [2021-11-07 01:06:20,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:06:20,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:06:20,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:06:20,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:06:20,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:06:20" (1/3) ... [2021-11-07 01:06:20,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717d1b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:20, skipping insertion in model container [2021-11-07 01:06:20,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:06:20" (2/3) ... [2021-11-07 01:06:20,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717d1b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:06:20, skipping insertion in model container [2021-11-07 01:06:20,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:20" (3/3) ... [2021-11-07 01:06:20,953 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound20.c [2021-11-07 01:06:20,959 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:06:20,959 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 01:06:21,020 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:06:21,028 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 [2021-11-07 01:06:21,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 01:06:21,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 35 states have internal predecessors, (48), 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) [2021-11-07 01:06:21,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:06:21,054 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:21,054 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:06:21,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:21,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash 152967942, now seen corresponding path program 1 times [2021-11-07 01:06:21,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:21,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159849913] [2021-11-07 01:06:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:21,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:21,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:21,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159849913] [2021-11-07 01:06:21,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159849913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:21,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:21,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:06:21,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703015907] [2021-11-07 01:06:21,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:06:21,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:06:21,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:06:21,316 INFO L87 Difference]: Start difference. First operand has 36 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 35 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:21,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:21,344 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2021-11-07 01:06:21,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:06:21,346 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:06:21,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:21,356 INFO L225 Difference]: With dead ends: 71 [2021-11-07 01:06:21,356 INFO L226 Difference]: Without dead ends: 34 [2021-11-07 01:06:21,363 INFO L786 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 [2021-11-07 01:06:21,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-07 01:06:21,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-07 01:06:21,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-11-07 01:06:21,408 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 5 [2021-11-07 01:06:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:21,409 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-11-07 01:06:21,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-11-07 01:06:21,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 01:06:21,411 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:21,411 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 01:06:21,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:06:21,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:21,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:21,418 INFO L85 PathProgramCache]: Analyzing trace with hash 150046441, now seen corresponding path program 1 times [2021-11-07 01:06:21,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:21,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623791491] [2021-11-07 01:06:21,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:21,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:21,474 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:06:21,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127962086] [2021-11-07 01:06:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:21,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:21,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:21,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:06:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:21,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:06:21,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:21,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:21,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:21,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623791491] [2021-11-07 01:06:21,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:21,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127962086] [2021-11-07 01:06:21,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127962086] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:21,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:21,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:21,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800582255] [2021-11-07 01:06:21,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:21,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:21,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:21,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:06:21,909 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:22,082 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-07 01:06:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:06:22,083 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 01:06:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:22,086 INFO L225 Difference]: With dead ends: 52 [2021-11-07 01:06:22,087 INFO L226 Difference]: Without dead ends: 46 [2021-11-07 01:06:22,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:06:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-07 01:06:22,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2021-11-07 01:06:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-11-07 01:06:22,111 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 5 [2021-11-07 01:06:22,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:22,112 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-11-07 01:06:22,112 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), 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) [2021-11-07 01:06:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-11-07 01:06:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:06:22,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:22,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:06:22,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:22,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:22,328 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:22,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash 356501228, now seen corresponding path program 1 times [2021-11-07 01:06:22,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:22,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537729253] [2021-11-07 01:06:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:22,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:22,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:22,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537729253] [2021-11-07 01:06:22,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537729253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:22,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:22,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:06:22,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981197669] [2021-11-07 01:06:22,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:06:22,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:22,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:06:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:22,421 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:22,473 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-11-07 01:06:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:06:22,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:06:22,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:22,477 INFO L225 Difference]: With dead ends: 34 [2021-11-07 01:06:22,479 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 01:06:22,479 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:06:22,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 01:06:22,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-11-07 01:06:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 29 states have internal predecessors, (33), 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) [2021-11-07 01:06:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-07 01:06:22,490 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2021-11-07 01:06:22,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:22,491 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-07 01:06:22,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,492 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-07 01:06:22,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:06:22,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:22,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:22,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:06:22,499 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1834102484, now seen corresponding path program 1 times [2021-11-07 01:06:22,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:22,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976895006] [2021-11-07 01:06:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:22,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:22,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:06:22,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167779379] [2021-11-07 01:06:22,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:22,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:22,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:22,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:22,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:06:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:06:22,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:22,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:22,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:22,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976895006] [2021-11-07 01:06:22,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:22,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167779379] [2021-11-07 01:06:22,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167779379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:22,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:22,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:06:22,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21646240] [2021-11-07 01:06:22,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:06:22,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:22,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:06:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:06:22,808 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:22,907 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-11-07 01:06:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:06:22,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:06:22,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:22,909 INFO L225 Difference]: With dead ends: 61 [2021-11-07 01:06:22,909 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 01:06:22,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:06:22,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 01:06:22,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-11-07 01:06:22,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.25) internal successors, (50), 43 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-11-07 01:06:22,920 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2021-11-07 01:06:22,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:22,920 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-11-07 01:06:22,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:22,921 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-11-07 01:06:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:06:22,922 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:22,922 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:22,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:23,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:23,140 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:23,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1966454167, now seen corresponding path program 1 times [2021-11-07 01:06:23,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:23,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407000778] [2021-11-07 01:06:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:23,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:06:23,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832605081] [2021-11-07 01:06:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:23,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:23,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:23,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:06:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:23,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:06:23,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:23,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:23,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:23,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:23,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:23,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407000778] [2021-11-07 01:06:23,432 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:23,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832605081] [2021-11-07 01:06:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832605081] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:23,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:23,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 01:06:23,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021623401] [2021-11-07 01:06:23,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:06:23,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:06:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:06:23,436 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-11-07 01:06:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:23,518 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2021-11-07 01:06:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:06:23,518 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 01:06:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:23,527 INFO L225 Difference]: With dead ends: 114 [2021-11-07 01:06:23,527 INFO L226 Difference]: Without dead ends: 87 [2021-11-07 01:06:23,531 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:23,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-07 01:06:23,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 75. [2021-11-07 01:06:23,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 74 states have internal predecessors, (88), 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) [2021-11-07 01:06:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 88 transitions. [2021-11-07 01:06:23,557 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 88 transitions. Word has length 15 [2021-11-07 01:06:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:23,557 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 88 transitions. [2021-11-07 01:06:23,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-11-07 01:06:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 88 transitions. [2021-11-07 01:06:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:06:23,558 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:23,559 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:23,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:23,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:23,776 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:23,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:23,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1763500994, now seen corresponding path program 1 times [2021-11-07 01:06:23,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:23,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526651272] [2021-11-07 01:06:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:23,789 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:06:23,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619342738] [2021-11-07 01:06:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:23,790 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:23,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:23,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:23,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:06:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:23,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:06:23,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:23,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:24,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:24,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526651272] [2021-11-07 01:06:24,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:24,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619342738] [2021-11-07 01:06:24,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619342738] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:24,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:06:24,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:06:24,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638684263] [2021-11-07 01:06:24,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:06:24,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:24,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:06:24,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:06:24,047 INFO L87 Difference]: Start difference. First operand 75 states and 88 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:24,143 INFO L93 Difference]: Finished difference Result 79 states and 93 transitions. [2021-11-07 01:06:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:06:24,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-07 01:06:24,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:24,144 INFO L225 Difference]: With dead ends: 79 [2021-11-07 01:06:24,145 INFO L226 Difference]: Without dead ends: 77 [2021-11-07 01:06:24,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:06:24,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-07 01:06:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2021-11-07 01:06:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 72 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2021-11-07 01:06:24,157 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 15 [2021-11-07 01:06:24,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:24,157 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2021-11-07 01:06:24,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2021-11-07 01:06:24,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:06:24,159 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:24,159 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:24,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:24,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:24,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:24,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:24,388 INFO L85 PathProgramCache]: Analyzing trace with hash 81620196, now seen corresponding path program 1 times [2021-11-07 01:06:24,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:24,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97977456] [2021-11-07 01:06:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:24,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:24,401 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:06:24,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461342987] [2021-11-07 01:06:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:24,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:24,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:24,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:24,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:06:24,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:24,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:06:24,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:24,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:24,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:24,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:24,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97977456] [2021-11-07 01:06:24,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:24,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461342987] [2021-11-07 01:06:24,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461342987] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:24,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [583225727] [2021-11-07 01:06:24,795 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2021-11-07 01:06:24,795 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:06:24,800 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:06:24,810 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:06:24,811 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:06:24,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:24,882 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:24,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:24,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:06:24,887 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:24,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:24,888 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:06:24,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-07 01:06:24,926 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-11-07 01:06:24,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:24,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:24,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:06:24,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:24,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:06:24,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:24,986 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:06:24,986 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:06:24,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:06:24,999 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,000 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:06:25,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:06:25,001 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:06:25,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,051 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:25,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:06:25,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:06:25,083 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:06:25,084 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:06:25,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,120 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.3 percent of original size [2021-11-07 01:06:25,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:06:25,126 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:06:25,126 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:322, output treesize:130 [2021-11-07 01:06:25,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 01:06:25,153 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:06:25,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 155 [2021-11-07 01:06:25,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 01:06:25,230 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-11-07 01:06:25,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,266 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-07 01:06:25,286 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.5 percent of original size [2021-11-07 01:06:25,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 01:06:25,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-07 01:06:25,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 01:06:25,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,393 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-07 01:06:25,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-07 01:06:25,422 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.4 percent of original size [2021-11-07 01:06:25,438 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-11-07 01:06:25,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-11-07 01:06:25,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,480 INFO L185 QuantifierPusher]: treesize reduction 13, result has 93.2 percent of original size 177 [2021-11-07 01:06:25,490 INFO L180 QuantifierPusher]: treesize reduction 13, result has 93.5 percent of original size [2021-11-07 01:06:25,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-07 01:06:25,507 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.6 percent of original size [2021-11-07 01:06:25,526 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 178 [2021-11-07 01:06:25,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,553 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-11-07 01:06:25,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 01:06:25,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-11-07 01:06:25,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:25,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-07 01:06:25,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:25,988 INFO L180 QuantifierPusher]: treesize reduction 129, result has 0.8 percent of original size [2021-11-07 01:06:25,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:06:25,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 248 [2021-11-07 01:06:26,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-11-07 01:06:26,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,065 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 277 [2021-11-07 01:06:26,138 INFO L180 QuantifierPusher]: treesize reduction 156, result has 74.9 percent of original size [2021-11-07 01:06:26,155 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,156 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,159 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 469 [2021-11-07 01:06:26,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,211 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,228 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,230 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,234 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,240 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,245 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-07 01:06:26,272 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:26,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:26,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:26,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-07 01:06:26,298 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:06:30,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [583225727] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:06:30,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:30,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [5, 5] total 20 [2021-11-07 01:06:30,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338459436] [2021-11-07 01:06:30,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:06:30,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:06:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:06:30,894 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:31,633 INFO L93 Difference]: Finished difference Result 119 states and 137 transitions. [2021-11-07 01:06:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:06:31,634 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 01:06:31,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:31,635 INFO L225 Difference]: With dead ends: 119 [2021-11-07 01:06:31,635 INFO L226 Difference]: Without dead ends: 92 [2021-11-07 01:06:31,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:06:31,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-07 01:06:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 79. [2021-11-07 01:06:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 78 states have internal predecessors, (88), 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) [2021-11-07 01:06:31,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2021-11-07 01:06:31,665 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 21 [2021-11-07 01:06:31,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:31,665 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2021-11-07 01:06:31,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 12 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:31,668 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2021-11-07 01:06:31,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 01:06:31,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:06:31,670 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:31,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:31,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-07 01:06:31,884 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 01:06:31,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:06:31,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1765479884, now seen corresponding path program 1 times [2021-11-07 01:06:31,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:06:31,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932726721] [2021-11-07 01:06:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:31,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:06:31,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:06:31,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1627969516] [2021-11-07 01:06:31,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:06:31,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:06:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:06:31,915 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:06:31,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:06:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:06:32,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:06:32,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:06:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:32,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:32,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:06:32,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:06:32,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932726721] [2021-11-07 01:06:32,592 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:32,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627969516] [2021-11-07 01:06:32,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627969516] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:32,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [952147383] [2021-11-07 01:06:32,595 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-11-07 01:06:32,596 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:06:32,596 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:06:32,597 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:06:32,597 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:06:32,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:32,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:06:32,617 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:32,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 01:06:32,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 173 [2021-11-07 01:06:32,634 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-11-07 01:06:32,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 01:06:32,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:06:32,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 01:06:32,647 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 01:06:32,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-07 01:06:32,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:06:32,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 01:06:32,667 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 01:06:32,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:32,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 01:06:32,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-07 01:06:32,710 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,712 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:06:32,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,719 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 01:06:32,720 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 01:06:32,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:32,729 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,733 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.3 percent of original size [2021-11-07 01:06:32,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-11-07 01:06:32,737 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 01:06:32,739 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:322, output treesize:130 [2021-11-07 01:06:32,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-07 01:06:32,755 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.1 percent of original size [2021-11-07 01:06:32,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 153 [2021-11-07 01:06:32,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-07 01:06:32,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 01:06:32,792 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-07 01:06:32,806 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.5 percent of original size [2021-11-07 01:06:32,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-07 01:06:32,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,828 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-07 01:06:32,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,844 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 01:06:32,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,859 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-07 01:06:32,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-11-07 01:06:32,880 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.0 percent of original size [2021-11-07 01:06:32,889 INFO L185 QuantifierPusher]: treesize reduction 7, result has 96.0 percent of original size 166 [2021-11-07 01:06:32,899 INFO L180 QuantifierPusher]: treesize reduction 7, result has 96.6 percent of original size [2021-11-07 01:06:32,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-11-07 01:06:32,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-11-07 01:06:32,940 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 177 [2021-11-07 01:06:32,955 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.5 percent of original size [2021-11-07 01:06:32,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-07 01:06:32,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:32,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-11-07 01:06:32,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 164 [2021-11-07 01:06:33,020 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,026 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 171 [2021-11-07 01:06:33,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:33,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-07 01:06:33,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 246 [2021-11-07 01:06:33,245 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-11-07 01:06:33,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,278 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,281 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,288 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 275 [2021-11-07 01:06:33,345 INFO L180 QuantifierPusher]: treesize reduction 156, result has 74.8 percent of original size [2021-11-07 01:06:33,362 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,365 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,368 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,373 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-07 01:06:33,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,419 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,432 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,435 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,443 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,448 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,453 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,473 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 219 [2021-11-07 01:06:33,495 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,500 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:33,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:33,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-07 01:06:33,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-11-07 01:06:33,523 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:06:37,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:37,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:06:37,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 01:06:37,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940882281] [2021-11-07 01:06:37,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:06:37,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:37,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:06:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:06:37,941 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:38,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:06:38,391 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2021-11-07 01:06:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:06:38,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-07 01:06:38,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:06:38,393 INFO L225 Difference]: With dead ends: 113 [2021-11-07 01:06:38,393 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:06:38,394 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:06:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:06:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:06:38,395 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) [2021-11-07 01:06:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:06:38,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-11-07 01:06:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:06:38,396 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:06:38,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:06:38,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:06:38,397 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:06:38,399 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,400 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,400 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,401 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:06:38,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:06:38,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-07 01:06:38,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:06:38,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:38,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:40,553 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,553 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,553 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:06:40,553 INFO L857 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-11-07 01:06:40,553 INFO L853 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~b~0 .cse0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,553 INFO L857 garLoopResultBuilder]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-11-07 01:06:40,554 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,554 INFO L857 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-11-07 01:06:40,554 INFO L853 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,554 INFO L857 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-11-07 01:06:40,554 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,555 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,555 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,555 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~b~0 .cse0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,555 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,555 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 41 42) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~b~0 .cse0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,556 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,556 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,556 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,556 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,556 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,557 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 51 52) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,557 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,557 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~r~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) [2021-11-07 01:06:40,557 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-11-07 01:06:40,557 INFO L860 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-11-07 01:06:40,557 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,557 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,557 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,558 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,558 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,558 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,558 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,558 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-11-07 01:06:40,558 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:06:40,559 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-07 01:06:40,569 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:06:40,570 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:06:40,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:06:40 BoogieIcfgContainer [2021-11-07 01:06:40,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:06:40,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:06:40,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:06:40,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:06:40,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:06:20" (3/4) ... [2021-11-07 01:06:40,605 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:06:40,616 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-07 01:06:40,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-07 01:06:40,620 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:06:40,621 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:06:40,667 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:06:40,668 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:06:40,669 INFO L168 Benchmark]: Toolchain (without parser) took 20572.74 ms. Allocated memory was 127.9 MB in the beginning and 186.6 MB in the end (delta: 58.7 MB). Free memory was 91.6 MB in the beginning and 63.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 85.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:40,669 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:06:40,670 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.78 ms. Allocated memory is still 127.9 MB. Free memory was 91.6 MB in the beginning and 102.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:40,670 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 101.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:06:40,671 INFO L168 Benchmark]: Boogie Preprocessor took 29.54 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 99.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:40,671 INFO L168 Benchmark]: RCFGBuilder took 453.24 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 86.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:40,672 INFO L168 Benchmark]: TraceAbstraction took 19655.70 ms. Allocated memory was 127.9 MB in the beginning and 186.6 MB in the end (delta: 58.7 MB). Free memory was 85.4 MB in the beginning and 66.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 92.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:40,672 INFO L168 Benchmark]: Witness Printer took 66.17 ms. Allocated memory is still 186.6 MB. Free memory was 66.8 MB in the beginning and 63.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:06:40,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 57.6 MB in the end (delta: 26.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.78 ms. Allocated memory is still 127.9 MB. Free memory was 91.6 MB in the beginning and 102.5 MB in the end (delta: -10.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.88 ms. Allocated memory is still 127.9 MB. Free memory was 102.5 MB in the beginning and 101.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.54 ms. Allocated memory is still 127.9 MB. Free memory was 101.1 MB in the beginning and 99.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 453.24 ms. Allocated memory is still 127.9 MB. Free memory was 99.6 MB in the beginning and 86.1 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19655.70 ms. Allocated memory was 127.9 MB in the beginning and 186.6 MB in the end (delta: 58.7 MB). Free memory was 85.4 MB in the beginning and 66.8 MB in the end (delta: 18.6 MB). Peak memory consumption was 92.0 MB. Max. memory is 16.1 GB. * Witness Printer took 66.17 ms. Allocated memory is still 186.6 MB. Free memory was 66.8 MB in the beginning and 63.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: 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 1 procedures, 36 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 19.5s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 267 SDslu, 357 SDs, 0 SdLazy, 508 SolverSat, 113 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 137 SyntacticMatches, 13 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 9.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 56 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 57 NumberOfFragments, 215 HoareAnnotationTreeSize, 9 FomulaSimplifications, 6080 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 9 FomulaSimplificationsInter, 5143 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 774 SizeOfPredicates, 30 NumberOfNonLiveVariables, 531 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 4/18 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[ms]: 1504, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 41, TOOLS_POST_TIME[ms]: 1018, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 41, TOOLS_QUANTIFIERELIM_TIME[ms]: 996, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 254, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 61, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 340, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME[ms]: 51, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 214, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 214, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 6, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 446, DAG_COMPRESSION_RETAINED_NODES: 70, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= cond && 1 <= y) && 1 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= cond && 1 <= y) && 1 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: (((1 <= cond && 1 <= y) && 1 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((1 <= cond && 1 <= y) && 1 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((1 <= cond && 1 <= y) && 1 <= r) && x == r + q * y) && r + q * y + a * y == b + x - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((1 <= cond && 1 <= y) && b == a * y) && r + q * y + a * y == b + x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (1 <= y && b == a * y) && r + q * y + a * y == b + x - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((1 <= cond && 1 <= y) && b == a * y) && r + q * y + a * y == b + x RESULT: Ultimate proved your program to be correct! [2021-11-07 01:06:40,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc19684-2ae4-4370-b67e-30d4953de3aa/bin/utaipan-UUZaoUuFF8/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