./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test22-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test22-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF --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 e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:38:05,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:38:05,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:38:05,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:38:05,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:38:05,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:38:05,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:38:05,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:38:05,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:38:05,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:38:05,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:38:05,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:38:05,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:38:05,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:38:05,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:38:05,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:38:05,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:38:05,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:38:05,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:38:05,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:38:05,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:38:05,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:38:05,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:38:05,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:38:05,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:38:05,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:38:05,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:38:05,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:38:05,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:38:05,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:38:05,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:38:05,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:38:05,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:38:05,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:38:05,604 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:38:05,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:38:05,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:38:05,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:38:05,606 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:38:05,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:38:05,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:38:05,610 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:38:05,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:38:05,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:38:05,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:38:05,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:38:05,665 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:38:05,666 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:38:05,666 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:38:05,667 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:38:05,667 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:38:05,668 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:38:05,668 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:38:05,669 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:38:05,669 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:38:05,670 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:38:05,670 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:38:05,671 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:38:05,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:38:05,672 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:38:05,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:38:05,682 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:38:05,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:38:05,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:38:05,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:38:05,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:38:05,684 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:38:05,685 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:38:05,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:38:05,685 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:38:05,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:38:05,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:38:05,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:38:05,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:38:05,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:38:05,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:38:05,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:38:05,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:38:05,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:38:05,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:38:05,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:38:05,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:38:05,693 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_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ce1c36cc17bb5fac8e93fbe54fbc2a77334d62ad40c06c722f9da96af2516f [2021-11-13 01:38:06,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:38:06,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:38:06,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:38:06,074 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:38:06,075 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:38:06,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/ldv-regression/test22-1.c [2021-11-13 01:38:06,154 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/data/6294b464c/63d10452afdd45358d2bd4afbf196452/FLAG9728205fd [2021-11-13 01:38:06,729 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:38:06,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/sv-benchmarks/c/ldv-regression/test22-1.c [2021-11-13 01:38:06,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/data/6294b464c/63d10452afdd45358d2bd4afbf196452/FLAG9728205fd [2021-11-13 01:38:07,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/data/6294b464c/63d10452afdd45358d2bd4afbf196452 [2021-11-13 01:38:07,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:38:07,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:38:07,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:38:07,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:38:07,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:38:07,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2e4c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07, skipping insertion in model container [2021-11-13 01:38:07,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:38:07,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:38:07,377 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_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-11-13 01:38:07,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:38:07,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:38:07,414 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_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/sv-benchmarks/c/ldv-regression/test22-1.c[1029,1042] [2021-11-13 01:38:07,415 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:38:07,432 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:38:07,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07 WrapperNode [2021-11-13 01:38:07,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:38:07,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:38:07,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:38:07,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:38:07,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,451 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:38:07,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:38:07,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:38:07,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:38:07,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:38:07,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:38:07,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:38:07,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:38:07,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (1/1) ... [2021-11-13 01:38:07,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:38:07,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:38:07,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:38:07,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:38:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:38:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:38:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 01:38:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-11-13 01:38:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-11-13 01:38:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:38:07,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:38:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 01:38:07,994 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:38:07,995 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 01:38:07,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:38:07 BoogieIcfgContainer [2021-11-13 01:38:07,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:38:08,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:38:08,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:38:08,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:38:08,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:38:07" (1/3) ... [2021-11-13 01:38:08,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f35ca50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:38:08, skipping insertion in model container [2021-11-13 01:38:08,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:38:07" (2/3) ... [2021-11-13 01:38:08,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f35ca50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:38:08, skipping insertion in model container [2021-11-13 01:38:08,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:38:07" (3/3) ... [2021-11-13 01:38:08,026 INFO L111 eAbstractionObserver]: Analyzing ICFG test22-1.c [2021-11-13 01:38:08,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:38:08,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:38:08,098 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:38:08,106 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 [2021-11-13 01:38:08,106 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:38:08,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 01:38:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-13 01:38:08,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:08,133 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:08,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:38:08,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:08,141 INFO L85 PathProgramCache]: Analyzing trace with hash -469408496, now seen corresponding path program 1 times [2021-11-13 01:38:08,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:08,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620170199] [2021-11-13 01:38:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:08,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:08,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 01:38:08,492 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:08,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620170199] [2021-11-13 01:38:08,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620170199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:08,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:08,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 01:38:08,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712801888] [2021-11-13 01:38:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:08,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:38:08,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:08,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:38:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:38:08,552 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:08,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:08,631 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2021-11-13 01:38:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:38:08,640 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 18 [2021-11-13 01:38:08,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:08,649 INFO L225 Difference]: With dead ends: 26 [2021-11-13 01:38:08,650 INFO L226 Difference]: Without dead ends: 16 [2021-11-13 01:38:08,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:38:08,662 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:08,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 5 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 55.46ms Time] [2021-11-13 01:38:08,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-13 01:38:08,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-13 01:38:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 01:38:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-13 01:38:08,718 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 18 [2021-11-13 01:38:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:08,720 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-13 01:38:08,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-13 01:38:08,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-13 01:38:08,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:08,727 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:08,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:38:08,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:38:08,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:08,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1674130630, now seen corresponding path program 1 times [2021-11-13 01:38:08,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:08,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333096804] [2021-11-13 01:38:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:08,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 01:38:09,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:09,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333096804] [2021-11-13 01:38:09,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333096804] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:09,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:09,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 01:38:09,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639244894] [2021-11-13 01:38:09,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:09,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:38:09,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:09,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:38:09,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:38:09,058 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:09,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:09,213 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-13 01:38:09,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:38:09,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 19 [2021-11-13 01:38:09,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:09,215 INFO L225 Difference]: With dead ends: 22 [2021-11-13 01:38:09,215 INFO L226 Difference]: Without dead ends: 18 [2021-11-13 01:38:09,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:38:09,218 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54.69ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:09,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 36 Invalid, 29 Unknown, 0 Unchecked, 7.31ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 54.69ms Time] [2021-11-13 01:38:09,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-13 01:38:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-13 01:38:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 01:38:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-13 01:38:09,227 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 19 [2021-11-13 01:38:09,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:09,228 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-13 01:38:09,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:09,228 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-13 01:38:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-13 01:38:09,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:09,229 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:09,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:38:09,230 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:38:09,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1798744469, now seen corresponding path program 1 times [2021-11-13 01:38:09,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:09,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987369768] [2021-11-13 01:38:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:09,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:09,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 01:38:09,552 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:09,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987369768] [2021-11-13 01:38:09,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987369768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 01:38:09,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940346236] [2021-11-13 01:38:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:09,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:09,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:38:09,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:38:09,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 01:38:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:09,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-13 01:38:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:10,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-11-13 01:38:10,400 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 01:38:10,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 01:38:10,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940346236] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:10,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954785489] [2021-11-13 01:38:10,597 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-13 01:38:10,598 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 01:38:10,603 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 01:38:10,610 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 01:38:10,611 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 01:38:10,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,677 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,680 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,682 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:10,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:10,684 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,687 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:10,690 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:10,691 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,692 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,694 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,696 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:10,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:10,698 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,700 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:10,703 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:10,703 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,704 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,706 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-13 01:38:10,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-13 01:38:10,710 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,712 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,714 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-13 01:38:10,715 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-13 01:38:10,718 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:10,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,720 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-13 01:38:10,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-13 01:38:10,746 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 55=[|v_#valid_12|]} [2021-11-13 01:38:10,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-13 01:38:10,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-13 01:38:10,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-13 01:38:10,804 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 01:38:10,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:10,856 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:10,986 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-13 01:38:10,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-13 01:38:10,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,995 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-13 01:38:10,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:10,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-13 01:38:10,998 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 01:38:11,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:11,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:11,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:11,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:11,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-11-13 01:38:11,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 01:38:11,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 01:38:11,074 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-13 01:38:11,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-13 01:38:11,137 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-13 01:38:11,137 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:291, output treesize:207 [2021-11-13 01:38:11,152 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-13 01:38:11,193 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-11-13 01:38:11,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,248 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-11-13 01:38:11,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:11,569 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 497 [2021-11-13 01:38:11,652 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,661 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:11,681 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-13 01:38:11,832 INFO L185 QuantifierPusher]: treesize reduction 12, result has 97.6 percent of original size 482 [2021-11-13 01:38:11,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-11-13 01:38:11,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,921 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:11,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:11,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-13 01:38:12,029 INFO L185 QuantifierPusher]: treesize reduction 12, result has 97.6 percent of original size 482 [2021-11-13 01:38:12,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-11-13 01:38:12,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,312 INFO L180 QuantifierPusher]: treesize reduction 42, result has 60.7 percent of original size [2021-11-13 01:38:12,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-13 01:38:12,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,329 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-13 01:38:12,332 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-13 01:38:12,340 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,346 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-13 01:38:12,351 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-13 01:38:12,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,445 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,453 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:12,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,457 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-13 01:38:12,460 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:12,462 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-13 01:38:12,478 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 01:38:12,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-13 01:38:12,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 203 [2021-11-13 01:38:12,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,612 INFO L180 QuantifierPusher]: treesize reduction 42, result has 66.9 percent of original size [2021-11-13 01:38:12,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-13 01:38:12,628 INFO L180 QuantifierPusher]: treesize reduction 43, result has 65.0 percent of original size [2021-11-13 01:38:12,631 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-13 01:38:12,644 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.0 percent of original size [2021-11-13 01:38:12,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-13 01:38:12,657 INFO L180 QuantifierPusher]: treesize reduction 42, result has 66.9 percent of original size [2021-11-13 01:38:12,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-13 01:38:12,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-13 01:38:12,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,737 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:12,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:12,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-13 01:38:12,800 INFO L185 QuantifierPusher]: treesize reduction 12, result has 97.6 percent of original size 482 [2021-11-13 01:38:12,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:12,924 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 42 for LOIs [2021-11-13 01:38:12,929 INFO L180 QuantifierPusher]: treesize reduction 42, result has 61.5 percent of original size [2021-11-13 01:38:12,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-13 01:38:12,940 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 01:38:17,425 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 01:38:17,425 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:38:17,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2021-11-13 01:38:17,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931679493] [2021-11-13 01:38:17,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 01:38:17,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:38:17,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:38:17,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=604, Unknown=0, NotChecked=0, Total=702 [2021-11-13 01:38:17,430 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:17,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:17,852 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-13 01:38:17,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:38:17,853 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2021-11-13 01:38:17,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:17,854 INFO L225 Difference]: With dead ends: 28 [2021-11-13 01:38:17,854 INFO L226 Difference]: Without dead ends: 24 [2021-11-13 01:38:17,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:38:17,857 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.72ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:17,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 105 Invalid, 87 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [8 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 115.72ms Time] [2021-11-13 01:38:17,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-13 01:38:17,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-11-13 01:38:17,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-13 01:38:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-11-13 01:38:17,864 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 21 [2021-11-13 01:38:17,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:17,864 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-11-13 01:38:17,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 15 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:17,865 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-11-13 01:38:17,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-13 01:38:17,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:17,872 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:38:17,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:18,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:18,077 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:38:18,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:18,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1215036378, now seen corresponding path program 2 times [2021-11-13 01:38:18,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:18,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246473864] [2021-11-13 01:38:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:18,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 01:38:18,353 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:18,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246473864] [2021-11-13 01:38:18,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246473864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 01:38:18,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219353392] [2021-11-13 01:38:18,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 01:38:18,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:38:18,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:38:18,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:38:18,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 01:38:18,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-13 01:38:18,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 01:38:18,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 01:38:18,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:38:19,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 40 [2021-11-13 01:38:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:38:19,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:38:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-13 01:38:19,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219353392] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:38:19,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1052885676] [2021-11-13 01:38:19,606 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-11-13 01:38:19,607 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 01:38:19,607 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 01:38:19,607 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 01:38:19,607 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 01:38:19,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,635 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,638 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,639 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:19,642 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:19,643 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,648 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,649 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:19,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:19,652 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,656 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:19,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:19,659 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,660 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,661 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,662 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-13 01:38:19,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-13 01:38:19,664 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,666 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,667 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-13 01:38:19,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-13 01:38:19,671 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 123 [2021-11-13 01:38:19,674 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-13 01:38:19,676 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:19,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-13 01:38:19,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 296 [2021-11-13 01:38:19,690 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_12|], 55=[|v_#valid_13|]} [2021-11-13 01:38:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 21 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-13 01:38:19,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-13 01:38:19,729 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-13 01:38:19,730 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 01:38:19,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:19,745 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,842 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-11-13 01:38:19,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 50 [2021-11-13 01:38:19,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-13 01:38:19,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-13 01:38:19,872 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 01:38:19,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:19,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 01:38:19,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 67 [2021-11-13 01:38:19,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 01:38:19,917 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 01:38:19,918 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-13 01:38:19,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:19,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,933 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-13 01:38:19,941 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-13 01:38:19,941 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 7 variables, input treesize:291, output treesize:207 [2021-11-13 01:38:19,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-13 01:38:19,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-11-13 01:38:19,972 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:19,977 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-11-13 01:38:19,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:19,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 497 [2021-11-13 01:38:20,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,196 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:20,206 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-13 01:38:20,270 INFO L185 QuantifierPusher]: treesize reduction 12, result has 97.6 percent of original size 482 [2021-11-13 01:38:20,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-11-13 01:38:20,320 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,322 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:20,328 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-13 01:38:20,376 INFO L185 QuantifierPusher]: treesize reduction 12, result has 97.6 percent of original size 482 [2021-11-13 01:38:20,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 512 [2021-11-13 01:38:20,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,559 INFO L180 QuantifierPusher]: treesize reduction 42, result has 60.7 percent of original size [2021-11-13 01:38:20,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-13 01:38:20,564 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,568 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-13 01:38:20,571 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-13 01:38:20,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-13 01:38:20,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-11-13 01:38:20,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,670 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,674 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:20,675 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,677 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-13 01:38:20,679 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:20,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-13 01:38:20,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-13 01:38:20,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,711 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-13 01:38:20,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-11-13 01:38:20,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,792 INFO L180 QuantifierPusher]: treesize reduction 42, result has 66.9 percent of original size [2021-11-13 01:38:20,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-13 01:38:20,803 INFO L180 QuantifierPusher]: treesize reduction 43, result has 65.0 percent of original size [2021-11-13 01:38:20,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-13 01:38:20,813 INFO L180 QuantifierPusher]: treesize reduction 8, result has 94.0 percent of original size [2021-11-13 01:38:20,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-11-13 01:38:20,822 INFO L180 QuantifierPusher]: treesize reduction 42, result has 66.9 percent of original size [2021-11-13 01:38:20,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-13 01:38:20,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-13 01:38:20,884 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 01:38:20,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 01:38:20,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-11-13 01:38:20,935 INFO L185 QuantifierPusher]: treesize reduction 12, result has 97.6 percent of original size 482 [2021-11-13 01:38:20,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:20,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:21,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:21,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 01:38:21,016 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 42 for LOIs [2021-11-13 01:38:21,020 INFO L180 QuantifierPusher]: treesize reduction 42, result has 61.5 percent of original size [2021-11-13 01:38:21,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-13 01:38:21,026 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 01:38:25,029 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 01:38:25,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 01:38:25,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2021-11-13 01:38:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721681742] [2021-11-13 01:38:25,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 01:38:25,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-13 01:38:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-13 01:38:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 01:38:25,034 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:25,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:25,988 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-13 01:38:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 01:38:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2021-11-13 01:38:25,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:25,989 INFO L225 Difference]: With dead ends: 28 [2021-11-13 01:38:25,989 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 01:38:25,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=363, Invalid=1989, Unknown=0, NotChecked=0, Total=2352 [2021-11-13 01:38:25,991 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.69ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.79ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:25,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 103 Invalid, 125 Unknown, 0 Unchecked, 2.69ms Time], IncrementalHoareTripleChecker [21 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 139.79ms Time] [2021-11-13 01:38:25,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 01:38:25,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 01:38:25,993 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) [2021-11-13 01:38:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 01:38:25,994 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-11-13 01:38:25,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:25,994 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 01:38:25,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 01:38:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 01:38:25,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 01:38:25,997 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 01:38:26,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:38:26,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-13 01:38:26,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 01:38:26,335 INFO L861 garLoopResultBuilder]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2021-11-13 01:38:26,335 INFO L858 garLoopResultBuilder]: For program point get_dummyEXIT(lines 22 25) no Hoare annotation was computed. [2021-11-13 01:38:26,335 INFO L861 garLoopResultBuilder]: At program point L35-2(line 35) the Hoare annotation is: true [2021-11-13 01:38:26,335 INFO L858 garLoopResultBuilder]: For program point L37-4(lines 37 46) no Hoare annotation was computed. [2021-11-13 01:38:26,336 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 01:38:26,336 INFO L858 garLoopResultBuilder]: For program point L35-3(line 35) no Hoare annotation was computed. [2021-11-13 01:38:26,336 INFO L861 garLoopResultBuilder]: At program point L35-4(line 35) the Hoare annotation is: true [2021-11-13 01:38:26,336 INFO L858 garLoopResultBuilder]: For program point L35-5(line 35) no Hoare annotation was computed. [2021-11-13 01:38:26,336 INFO L854 garLoopResultBuilder]: At program point L44(lines 33 52) the Hoare annotation is: false [2021-11-13 01:38:26,337 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 40 42) no Hoare annotation was computed. [2021-11-13 01:38:26,337 INFO L854 garLoopResultBuilder]: At program point L40-3(lines 40 42) the Hoare annotation is: (and (or (and (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|)) (not |ULTIMATE.start_main_#t~short19#1|)) (or (not (= |ULTIMATE.start_main_~pd2~0#1.base| 0)) (not (= |ULTIMATE.start_main_~pa~0#1.offset| 0))) (< 0 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) |ULTIMATE.start_main_~pd2~0#1.offset|)) (< |ULTIMATE.start_main_~i~0#1| (+ (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) 1)) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_main_~pd2~0#1.offset| |ULTIMATE.start_main_~pa~0#1.offset|)) [2021-11-13 01:38:26,337 INFO L854 garLoopResultBuilder]: At program point L40-4(lines 40 42) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) |ULTIMATE.start_main_~pd2~0#1.offset|))) (and (<= .cse0 |ULTIMATE.start_main_~i~0#1|) (or (and (= |ULTIMATE.start_main_~pd1~0#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |ULTIMATE.start_main_~pd2~0#1.base| |ULTIMATE.start_main_~pd1~0#1.base|)) (not |ULTIMATE.start_main_#t~short19#1|)) (< 0 .cse0) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (< |ULTIMATE.start_main_~i~0#1| (+ .cse0 1)) (or (not (= |ULTIMATE.start_main_~pd2~0#1.base| 0)) (not (= |ULTIMATE.start_main_~pd2~0#1.offset| 0))) (= |ULTIMATE.start_main_~pd2~0#1.offset| |ULTIMATE.start_main_~pa~0#1.offset|))) [2021-11-13 01:38:26,337 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 01:38:26,338 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 50) no Hoare annotation was computed. [2021-11-13 01:38:26,338 INFO L861 garLoopResultBuilder]: At program point L51(lines 32 52) the Hoare annotation is: true [2021-11-13 01:38:26,338 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 45) no Hoare annotation was computed. [2021-11-13 01:38:26,338 INFO L861 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: true [2021-11-13 01:38:26,338 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 46) no Hoare annotation was computed. [2021-11-13 01:38:26,338 INFO L858 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-11-13 01:38:26,344 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2021-11-13 01:38:26,346 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 01:38:26,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:38:26 BoogieIcfgContainer [2021-11-13 01:38:26,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 01:38:26,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 01:38:26,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 01:38:26,381 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 01:38:26,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:38:07" (3/4) ... [2021-11-13 01:38:26,385 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 01:38:26,391 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2021-11-13 01:38:26,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2021-11-13 01:38:26,401 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-13 01:38:26,401 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-13 01:38:26,402 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 01:38:26,474 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 01:38:26,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 01:38:26,481 INFO L158 Benchmark]: Toolchain (without parser) took 19363.37ms. Allocated memory was 90.2MB in the beginning and 167.8MB in the end (delta: 77.6MB). Free memory was 53.9MB in the beginning and 118.3MB in the end (delta: -64.4MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,483 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:38:26,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.37ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 53.7MB in the beginning and 91.8MB in the end (delta: -38.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.33ms. Allocated memory is still 115.3MB. Free memory was 91.8MB in the beginning and 90.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,486 INFO L158 Benchmark]: Boogie Preprocessor took 30.75ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,486 INFO L158 Benchmark]: RCFGBuilder took 487.67ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 75.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,486 INFO L158 Benchmark]: TraceAbstraction took 18376.04ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 74.8MB in the beginning and 121.5MB in the end (delta: -46.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,487 INFO L158 Benchmark]: Witness Printer took 94.22ms. Allocated memory is still 167.8MB. Free memory was 121.5MB in the beginning and 118.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 01:38:26,495 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 90.2MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 41.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.37ms. Allocated memory was 90.2MB in the beginning and 115.3MB in the end (delta: 25.2MB). Free memory was 53.7MB in the beginning and 91.8MB in the end (delta: -38.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.33ms. Allocated memory is still 115.3MB. Free memory was 91.8MB in the beginning and 90.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.75ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 88.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.67ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 75.3MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18376.04ms. Allocated memory was 115.3MB in the beginning and 167.8MB in the end (delta: 52.4MB). Free memory was 74.8MB in the beginning and 121.5MB in the end (delta: -46.6MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 94.22ms. Allocated memory is still 167.8MB. Free memory was 121.5MB in the beginning and 118.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: 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 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.2s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 365.66ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 288.69ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 241 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 47 mSDtfsCounter, 215 mSolverCounterSat, 14.50ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 188 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 10.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 17 NumberOfFragments, 97 HoareAnnotationTreeSize, 10 FomulaSimplifications, 16 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 252 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 133 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 1106 SizeOfPredicates, 31 NumberOfNonLiveVariables, 281 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 73/114 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: ((((((pd1 == pd2 && pd2 == pd1) || !aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux) && (!(pd2 == 0) || !(pa == 0))) && 0 < unknown-#memory_int-unknown[pd2][pd2]) && i < unknown-#memory_int-unknown[pa][pa] + 1) && pa == pd2) && pd2 == pa - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((unknown-#memory_int-unknown[pd2][pd2] <= i && ((pd1 == pd2 && pd2 == pd1) || !aux-pd1 != 0 && pd1 == pd2 && (*pd2).a > 0-aux)) && 0 < unknown-#memory_int-unknown[pd2][pd2]) && pa == pd2) && i < unknown-#memory_int-unknown[pd2][pd2] + 1) && (!(pd2 == 0) || !(pd2 == 0))) && pd2 == pa RESULT: Ultimate proved your program to be correct! [2021-11-13 01:38:26,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60dd6977-1ddd-404a-8cd8-fa5f6d57a69b/bin/utaipan-vmNK8stdcF/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