./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P --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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:44:57,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:44:57,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:44:57,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:44:57,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:44:57,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:44:57,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:44:57,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:44:57,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:44:57,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:44:57,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:44:57,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:44:57,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:44:57,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:44:57,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:44:57,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:44:57,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:44:57,835 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:44:57,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:44:57,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:44:57,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:44:57,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:44:57,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:44:57,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:44:57,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:44:57,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:44:57,862 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:44:57,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:44:57,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:44:57,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:44:57,867 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:44:57,868 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:44:57,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:44:57,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:44:57,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:44:57,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:44:57,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:44:57,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:44:57,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:44:57,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:44:57,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:44:57,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:44:57,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:44:57,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:44:57,910 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:44:57,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:44:57,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:44:57,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:44:57,911 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:44:57,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:44:57,912 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:44:57,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:44:57,912 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:44:57,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:44:57,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:44:57,913 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:44:57,913 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:44:57,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:44:57,914 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:44:57,914 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:44:57,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:44:57,915 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:44:57,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:44:57,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:44:57,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:44:57,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:44:57,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:44:57,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:44:57,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:44:57,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:44:57,918 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:44:57,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:44:57,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:44:57,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:44:57,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:44:57,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:44:57,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:44:57,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:44:57,920 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:44:57,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:44:57,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:44:57,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:44:57,921 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:44:57,921 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_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2021-11-21 00:44:58,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:44:58,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:44:58,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:44:58,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:44:58,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:44:58,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-21 00:44:58,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/data/5a99d9b3d/cfe5bf6e75034fca891bf1699591d8c8/FLAG7cda01bc3 [2021-11-21 00:44:58,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:44:58,852 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2021-11-21 00:44:58,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/data/5a99d9b3d/cfe5bf6e75034fca891bf1699591d8c8/FLAG7cda01bc3 [2021-11-21 00:44:59,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/data/5a99d9b3d/cfe5bf6e75034fca891bf1699591d8c8 [2021-11-21 00:44:59,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:44:59,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:44:59,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:44:59,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:44:59,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:44:59,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9b0eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59, skipping insertion in model container [2021-11-21 00:44:59,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:44:59,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:44:59,530 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-21 00:44:59,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:44:59,571 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:44:59,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2021-11-21 00:44:59,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:44:59,644 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:44:59,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59 WrapperNode [2021-11-21 00:44:59,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:44:59,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:44:59,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:44:59,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:44:59,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,723 INFO L137 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 193 [2021-11-21 00:44:59,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:44:59,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:44:59,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:44:59,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:44:59,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,766 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:44:59,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:44:59,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:44:59,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:44:59,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (1/1) ... [2021-11-21 00:44:59,811 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:44:59,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:44:59,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:44:59,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:44:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:44:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:44:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:44:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:44:59,887 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-21 00:44:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-21 00:44:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-21 00:44:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-21 00:44:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-21 00:44:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-21 00:44:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:44:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:44:59,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:44:59,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:44:59,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:44:59,890 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-21 00:45:00,016 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:45:00,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:45:00,428 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:45:00,450 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:45:00,450 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-21 00:45:00,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:45:00 BoogieIcfgContainer [2021-11-21 00:45:00,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:45:00,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:45:00,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:45:00,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:45:00,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:44:59" (1/3) ... [2021-11-21 00:45:00,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5273a220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:45:00, skipping insertion in model container [2021-11-21 00:45:00,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:44:59" (2/3) ... [2021-11-21 00:45:00,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5273a220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:45:00, skipping insertion in model container [2021-11-21 00:45:00,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:45:00" (3/3) ... [2021-11-21 00:45:00,468 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2021-11-21 00:45:00,474 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-21 00:45:00,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:45:00,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:45:00,475 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-21 00:45:00,547 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,547 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,547 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,548 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,548 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,548 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,548 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,549 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,549 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,549 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,550 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,550 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,550 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,551 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,551 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,552 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,552 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,552 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,552 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,552 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,553 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,553 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,553 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,553 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,553 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,553 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,554 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,554 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,555 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,555 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,555 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,555 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,555 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,556 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,556 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,557 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,557 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,557 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,557 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,558 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,558 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,558 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,558 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,562 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,562 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,563 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,563 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,563 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,563 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,564 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,564 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,564 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,564 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,566 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,566 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,566 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,567 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,568 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,571 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,571 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,571 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,571 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,572 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,573 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,573 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,573 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,573 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,578 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,579 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,579 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,579 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,580 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,580 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,580 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,581 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,581 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,582 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,582 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,582 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,582 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,582 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,582 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,583 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,583 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,583 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,583 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,583 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,583 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,584 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,585 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,585 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,585 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,585 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,591 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,592 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,592 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,597 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,598 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,598 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,600 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,600 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,601 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,601 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-21 00:45:00,612 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-21 00:45:00,671 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:45:00,684 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 [2021-11-21 00:45:00,684 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 00:45:00,711 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-21 00:45:00,723 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 294 transitions, 612 flow [2021-11-21 00:45:00,726 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 294 transitions, 612 flow [2021-11-21 00:45:00,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 279 places, 294 transitions, 612 flow [2021-11-21 00:45:00,893 INFO L129 PetriNetUnfolder]: 25/291 cut-off events. [2021-11-21 00:45:00,893 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-21 00:45:00,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 25/291 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 179 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 234. Up to 2 conditions per place. [2021-11-21 00:45:00,905 INFO L116 LiptonReduction]: Number of co-enabled transitions 2184 [2021-11-21 00:45:10,204 INFO L131 LiptonReduction]: Checked pairs total: 4296 [2021-11-21 00:45:10,205 INFO L133 LiptonReduction]: Total number of compositions: 313 [2021-11-21 00:45:10,219 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 40 transitions, 104 flow [2021-11-21 00:45:10,278 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 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) [2021-11-21 00:45:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 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) [2021-11-21 00:45:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-21 00:45:10,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:10,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:10,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash 724272896, now seen corresponding path program 1 times [2021-11-21 00:45:10,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:10,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555891616] [2021-11-21 00:45:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:10,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:10,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:45:10,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:10,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555891616] [2021-11-21 00:45:10,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555891616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:10,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:45:10,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:45:10,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675367983] [2021-11-21 00:45:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:10,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:45:10,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:45:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:45:10,760 INFO L87 Difference]: Start difference. First operand has 378 states, 377 states have (on average 3.2546419098143238) internal successors, (1227), 377 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:10,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:10,961 INFO L93 Difference]: Finished difference Result 757 states and 2455 transitions. [2021-11-21 00:45:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:45:10,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-21 00:45:10,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:10,993 INFO L225 Difference]: With dead ends: 757 [2021-11-21 00:45:10,993 INFO L226 Difference]: Without dead ends: 382 [2021-11-21 00:45:10,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:45:11,004 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:11,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 18 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-21 00:45:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2021-11-21 00:45:11,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.2309711286089238) internal successors, (1231), 381 states have internal predecessors, (1231), 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) [2021-11-21 00:45:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1231 transitions. [2021-11-21 00:45:11,087 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1231 transitions. Word has length 23 [2021-11-21 00:45:11,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:11,088 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1231 transitions. [2021-11-21 00:45:11,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:11,088 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1231 transitions. [2021-11-21 00:45:11,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-21 00:45:11,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:11,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:11,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:45:11,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:11,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:11,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1342222061, now seen corresponding path program 1 times [2021-11-21 00:45:11,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:11,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840598783] [2021-11-21 00:45:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:11,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:11,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:11,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:11,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840598783] [2021-11-21 00:45:11,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840598783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:11,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168364083] [2021-11-21 00:45:11,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:11,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:11,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:11,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:11,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:45:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:45:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:11,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:11,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168364083] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:11,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:45:11,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2021-11-21 00:45:11,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900226625] [2021-11-21 00:45:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:11,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:45:11,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:45:11,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:45:11,660 INFO L87 Difference]: Start difference. First operand 382 states and 1231 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:11,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:11,775 INFO L93 Difference]: Finished difference Result 444 states and 1440 transitions. [2021-11-21 00:45:11,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:45:11,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-21 00:45:11,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:11,781 INFO L225 Difference]: With dead ends: 444 [2021-11-21 00:45:11,784 INFO L226 Difference]: Without dead ends: 444 [2021-11-21 00:45:11,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:45:11,787 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:11,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 13 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:45:11,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-21 00:45:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2021-11-21 00:45:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.250564334085779) internal successors, (1440), 443 states have internal predecessors, (1440), 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) [2021-11-21 00:45:11,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1440 transitions. [2021-11-21 00:45:11,873 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1440 transitions. Word has length 27 [2021-11-21 00:45:11,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:11,874 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1440 transitions. [2021-11-21 00:45:11,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1440 transitions. [2021-11-21 00:45:11,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:11,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:11,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:11,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:12,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:12,078 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:12,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:12,079 INFO L85 PathProgramCache]: Analyzing trace with hash 732063223, now seen corresponding path program 1 times [2021-11-21 00:45:12,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:12,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781152581] [2021-11-21 00:45:12,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:12,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:12,254 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781152581] [2021-11-21 00:45:12,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781152581] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:12,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943601710] [2021-11-21 00:45:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:12,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:12,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:12,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:12,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:45:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:12,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:45:12,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:12,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:12,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943601710] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:12,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:45:12,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2021-11-21 00:45:12,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731982028] [2021-11-21 00:45:12,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:12,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:45:12,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:12,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:45:12,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:45:12,709 INFO L87 Difference]: Start difference. First operand 444 states and 1440 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:13,001 INFO L93 Difference]: Finished difference Result 966 states and 3154 transitions. [2021-11-21 00:45:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:45:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:13,011 INFO L225 Difference]: With dead ends: 966 [2021-11-21 00:45:13,012 INFO L226 Difference]: Without dead ends: 966 [2021-11-21 00:45:13,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2021-11-21 00:45:13,016 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 149 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:13,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 25 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:13,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-21 00:45:13,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 498. [2021-11-21 00:45:13,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 497 states have (on average 3.3400402414486923) internal successors, (1660), 497 states have internal predecessors, (1660), 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) [2021-11-21 00:45:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1660 transitions. [2021-11-21 00:45:13,053 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1660 transitions. Word has length 30 [2021-11-21 00:45:13,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:13,053 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1660 transitions. [2021-11-21 00:45:13,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:13,054 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1660 transitions. [2021-11-21 00:45:13,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:13,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:13,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:13,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:13,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:13,274 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:13,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1020524845, now seen corresponding path program 2 times [2021-11-21 00:45:13,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:13,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799302145] [2021-11-21 00:45:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:13,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:13,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:13,379 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:13,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799302145] [2021-11-21 00:45:13,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799302145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:13,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103143215] [2021-11-21 00:45:13,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:45:13,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:13,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:13,382 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:13,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:45:13,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:45:13,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:45:13,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:13,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:45:13,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:45:13,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103143215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:13,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:13,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-11-21 00:45:13,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066344680] [2021-11-21 00:45:13,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:13,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:45:13,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:45:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:45:13,778 INFO L87 Difference]: Start difference. First operand 498 states and 1660 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:14,005 INFO L93 Difference]: Finished difference Result 1083 states and 3491 transitions. [2021-11-21 00:45:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:45:14,005 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:14,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:14,017 INFO L225 Difference]: With dead ends: 1083 [2021-11-21 00:45:14,017 INFO L226 Difference]: Without dead ends: 1066 [2021-11-21 00:45:14,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:45:14,019 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 64 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:14,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 39 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:14,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2021-11-21 00:45:14,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 514. [2021-11-21 00:45:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 3.309941520467836) internal successors, (1698), 513 states have internal predecessors, (1698), 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) [2021-11-21 00:45:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1698 transitions. [2021-11-21 00:45:14,056 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1698 transitions. Word has length 30 [2021-11-21 00:45:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:14,056 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1698 transitions. [2021-11-21 00:45:14,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:14,057 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1698 transitions. [2021-11-21 00:45:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:14,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:14,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:14,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:14,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:14,275 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:14,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash -464564481, now seen corresponding path program 3 times [2021-11-21 00:45:14,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:14,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251332708] [2021-11-21 00:45:14,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:14,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:14,374 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251332708] [2021-11-21 00:45:14,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251332708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:14,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535137887] [2021-11-21 00:45:14,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:45:14,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:14,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:14,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:45:14,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:45:14,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:14,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:45:14,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:45:14,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:45:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535137887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:14,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:14,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-21 00:45:14,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533944062] [2021-11-21 00:45:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:45:14,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:45:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:45:14,570 INFO L87 Difference]: Start difference. First operand 514 states and 1698 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:14,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:14,838 INFO L93 Difference]: Finished difference Result 826 states and 2686 transitions. [2021-11-21 00:45:14,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:45:14,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:14,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:14,847 INFO L225 Difference]: With dead ends: 826 [2021-11-21 00:45:14,847 INFO L226 Difference]: Without dead ends: 826 [2021-11-21 00:45:14,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:45:14,848 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 101 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:14,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 39 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-11-21 00:45:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 552. [2021-11-21 00:45:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 551 states have (on average 3.2994555353901998) internal successors, (1818), 551 states have internal predecessors, (1818), 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) [2021-11-21 00:45:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 1818 transitions. [2021-11-21 00:45:14,874 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 1818 transitions. Word has length 30 [2021-11-21 00:45:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:14,875 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 1818 transitions. [2021-11-21 00:45:14,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 1818 transitions. [2021-11-21 00:45:14,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:14,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:14,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:14,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:15,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:15,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:15,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:15,094 INFO L85 PathProgramCache]: Analyzing trace with hash -229980547, now seen corresponding path program 4 times [2021-11-21 00:45:15,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:15,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514588075] [2021-11-21 00:45:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:15,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:15,192 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:15,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514588075] [2021-11-21 00:45:15,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514588075] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:15,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874305776] [2021-11-21 00:45:15,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:45:15,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:15,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:15,193 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:15,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:45:15,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:15,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:45:15,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:15,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:15,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874305776] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:15,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:45:15,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2021-11-21 00:45:15,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770549083] [2021-11-21 00:45:15,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:15,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:45:15,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:45:15,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:45:15,594 INFO L87 Difference]: Start difference. First operand 552 states and 1818 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:15,826 INFO L93 Difference]: Finished difference Result 852 states and 2768 transitions. [2021-11-21 00:45:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 00:45:15,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:15,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:15,837 INFO L225 Difference]: With dead ends: 852 [2021-11-21 00:45:15,837 INFO L226 Difference]: Without dead ends: 852 [2021-11-21 00:45:15,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:45:15,839 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 127 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:15,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 29 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-11-21 00:45:15,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 580. [2021-11-21 00:45:15,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 3.378238341968912) internal successors, (1956), 579 states have internal predecessors, (1956), 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) [2021-11-21 00:45:15,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1956 transitions. [2021-11-21 00:45:15,868 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1956 transitions. Word has length 30 [2021-11-21 00:45:15,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:15,868 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1956 transitions. [2021-11-21 00:45:15,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:15,869 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1956 transitions. [2021-11-21 00:45:15,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:15,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:15,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:15,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:16,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:16,099 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:16,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash 58481075, now seen corresponding path program 5 times [2021-11-21 00:45:16,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:16,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156730494] [2021-11-21 00:45:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:16,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:16,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:16,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156730494] [2021-11-21 00:45:16,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156730494] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:16,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676119830] [2021-11-21 00:45:16,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:45:16,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:16,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:16,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:16,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:45:16,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:45:16,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:16,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:45:16,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:45:16,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:45:16,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676119830] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:16,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:16,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2021-11-21 00:45:16,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116479624] [2021-11-21 00:45:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:16,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:45:16,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:45:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-21 00:45:16,536 INFO L87 Difference]: Start difference. First operand 580 states and 1956 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:16,744 INFO L93 Difference]: Finished difference Result 1107 states and 3639 transitions. [2021-11-21 00:45:16,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:45:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:16,756 INFO L225 Difference]: With dead ends: 1107 [2021-11-21 00:45:16,756 INFO L226 Difference]: Without dead ends: 1090 [2021-11-21 00:45:16,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:45:16,758 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 57 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:16,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 46 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2021-11-21 00:45:16,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 566. [2021-11-21 00:45:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 565 states have (on average 3.327433628318584) internal successors, (1880), 565 states have internal predecessors, (1880), 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) [2021-11-21 00:45:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 1880 transitions. [2021-11-21 00:45:16,791 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 1880 transitions. Word has length 30 [2021-11-21 00:45:16,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:16,791 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 1880 transitions. [2021-11-21 00:45:16,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:16,792 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 1880 transitions. [2021-11-21 00:45:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:16,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:16,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:16,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:17,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:17,007 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:17,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:17,007 INFO L85 PathProgramCache]: Analyzing trace with hash 607688865, now seen corresponding path program 6 times [2021-11-21 00:45:17,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:17,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555472646] [2021-11-21 00:45:17,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:17,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:17,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555472646] [2021-11-21 00:45:17,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555472646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:17,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470940135] [2021-11-21 00:45:17,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:45:17,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:17,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:17,116 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:17,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 00:45:17,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:45:17,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:45:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:45:17,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:45:17,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470940135] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:45:17,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:45:17,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-21 00:45:17,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046614256] [2021-11-21 00:45:17,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:17,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:45:17,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:45:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-21 00:45:17,285 INFO L87 Difference]: Start difference. First operand 566 states and 1880 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:17,530 INFO L93 Difference]: Finished difference Result 838 states and 2756 transitions. [2021-11-21 00:45:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:45:17,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:17,539 INFO L225 Difference]: With dead ends: 838 [2021-11-21 00:45:17,539 INFO L226 Difference]: Without dead ends: 838 [2021-11-21 00:45:17,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:45:17,540 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 91 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:17,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 45 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-21 00:45:17,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 586. [2021-11-21 00:45:17,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.32991452991453) internal successors, (1948), 585 states have internal predecessors, (1948), 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) [2021-11-21 00:45:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1948 transitions. [2021-11-21 00:45:17,565 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1948 transitions. Word has length 30 [2021-11-21 00:45:17,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:17,566 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 1948 transitions. [2021-11-21 00:45:17,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1948 transitions. [2021-11-21 00:45:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:17,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:17,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:17,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:17,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:17,795 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:17,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1091272577, now seen corresponding path program 7 times [2021-11-21 00:45:17,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:17,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044097534] [2021-11-21 00:45:17,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:17,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:17,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:17,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044097534] [2021-11-21 00:45:17,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044097534] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:17,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519130593] [2021-11-21 00:45:17,874 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:45:17,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:17,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:17,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 00:45:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:17,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 00:45:17,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:18,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:18,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519130593] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:18,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 00:45:18,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2021-11-21 00:45:18,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122175318] [2021-11-21 00:45:18,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:45:18,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:45:18,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:18,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:45:18,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:45:18,199 INFO L87 Difference]: Start difference. First operand 586 states and 1948 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:18,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:18,428 INFO L93 Difference]: Finished difference Result 928 states and 3030 transitions. [2021-11-21 00:45:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:45:18,429 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:18,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:18,436 INFO L225 Difference]: With dead ends: 928 [2021-11-21 00:45:18,436 INFO L226 Difference]: Without dead ends: 928 [2021-11-21 00:45:18,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:45:18,437 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 98 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:18,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 38 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:45:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-11-21 00:45:18,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 576. [2021-11-21 00:45:18,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 3.2869565217391306) internal successors, (1890), 575 states have internal predecessors, (1890), 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) [2021-11-21 00:45:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 1890 transitions. [2021-11-21 00:45:18,464 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 1890 transitions. Word has length 30 [2021-11-21 00:45:18,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:18,464 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 1890 transitions. [2021-11-21 00:45:18,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:45:18,465 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 1890 transitions. [2021-11-21 00:45:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-21 00:45:18,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:18,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:18,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:18,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:18,683 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:18,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:18,683 INFO L85 PathProgramCache]: Analyzing trace with hash 396805243, now seen corresponding path program 8 times [2021-11-21 00:45:18,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:18,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045430847] [2021-11-21 00:45:18,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:18,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:18,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:18,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:18,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045430847] [2021-11-21 00:45:18,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045430847] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:18,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392252077] [2021-11-21 00:45:18,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:45:18,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:18,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:18,782 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:18,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 00:45:18,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:45:18,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:45:18,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:45:18,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:45:19,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:45:19,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:45:19,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392252077] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:45:19,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1199489795] [2021-11-21 00:45:19,152 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 00:45:19,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:45:19,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2021-11-21 00:45:19,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022210409] [2021-11-21 00:45:19,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:45:19,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 00:45:19,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:45:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 00:45:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-21 00:45:19,155 INFO L87 Difference]: Start difference. First operand 576 states and 1890 transitions. Second operand has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 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) [2021-11-21 00:45:19,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:45:19,562 INFO L93 Difference]: Finished difference Result 904 states and 2932 transitions. [2021-11-21 00:45:19,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 00:45:19,563 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-11-21 00:45:19,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:45:19,570 INFO L225 Difference]: With dead ends: 904 [2021-11-21 00:45:19,570 INFO L226 Difference]: Without dead ends: 904 [2021-11-21 00:45:19,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2021-11-21 00:45:19,571 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 203 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:45:19,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 71 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:45:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2021-11-21 00:45:19,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 570. [2021-11-21 00:45:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.2618629173989455) internal successors, (1856), 569 states have internal predecessors, (1856), 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) [2021-11-21 00:45:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1856 transitions. [2021-11-21 00:45:19,596 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1856 transitions. Word has length 30 [2021-11-21 00:45:19,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:45:19,596 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1856 transitions. [2021-11-21 00:45:19,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 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) [2021-11-21 00:45:19,597 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1856 transitions. [2021-11-21 00:45:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:45:19,599 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:45:19,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:45:19,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:45:19,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:19,818 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:45:19,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:45:19,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1171051657, now seen corresponding path program 1 times [2021-11-21 00:45:19,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:45:19,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43791547] [2021-11-21 00:45:19,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:19,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:45:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:20,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:45:20,944 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:45:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43791547] [2021-11-21 00:45:20,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43791547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:45:20,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732101301] [2021-11-21 00:45:20,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:45:20,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:45:20,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:45:20,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:45:20,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 00:45:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:45:21,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-21 00:45:21,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:45:21,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:45:21,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 12 [2021-11-21 00:45:21,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:45:21,350 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:45:21,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 00:45:21,686 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-21 00:45:21,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-21 00:45:21,787 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-21 00:45:21,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-21 00:45:22,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:45:22,351 INFO L354 Elim1Store]: treesize reduction 138, result has 26.2 percent of original size [2021-11-21 00:45:22,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 64 [2021-11-21 00:45:25,259 INFO L354 Elim1Store]: treesize reduction 64, result has 32.6 percent of original size [2021-11-21 00:45:25,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 79 [2021-11-21 00:45:38,874 WARN L227 SmtUtils]: Spent 12.79s on a formula simplification. DAG size of input: 55 DAG size of output: 50 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:45:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:45:39,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:48:13,195 WARN L227 SmtUtils]: Spent 15.32s on a formula simplification. DAG size of input: 415 DAG size of output: 253 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:48:13,197 INFO L354 Elim1Store]: treesize reduction 1857, result has 35.3 percent of original size [2021-11-21 00:48:13,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 1929196 treesize of output 652254 [2021-11-21 00:48:17,802 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:48:17,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1113306 treesize of output 1051966 [2021-11-21 00:48:20,315 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:48:20,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1051966 treesize of output 1000838 [2021-11-21 00:48:23,106 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:48:23,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1000838 treesize of output 990690 [2021-11-21 00:48:27,252 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:48:27,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1287494838] [2021-11-21 00:48:27,254 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 00:48:27,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:48:27,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-21 00:48:27,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319078808] [2021-11-21 00:48:27,256 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:48:27,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 00:48:27,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:27,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 00:48:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1601, Unknown=64, NotChecked=0, Total=1806 [2021-11-21 00:48:27,258 INFO L87 Difference]: Start difference. First operand 570 states and 1856 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:48:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:31,659 INFO L93 Difference]: Finished difference Result 1928 states and 6374 transitions. [2021-11-21 00:48:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-21 00:48:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-21 00:48:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:31,680 INFO L225 Difference]: With dead ends: 1928 [2021-11-21 00:48:31,680 INFO L226 Difference]: Without dead ends: 1921 [2021-11-21 00:48:31,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 156.2s TimeCoverageRelationStatistics Valid=414, Invalid=2943, Unknown=65, NotChecked=0, Total=3422 [2021-11-21 00:48:31,682 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 199 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:31,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 109 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 00:48:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2021-11-21 00:48:31,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 728. [2021-11-21 00:48:31,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 3.3012379642365888) internal successors, (2400), 727 states have internal predecessors, (2400), 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) [2021-11-21 00:48:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 2400 transitions. [2021-11-21 00:48:31,725 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 2400 transitions. Word has length 33 [2021-11-21 00:48:31,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:31,726 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 2400 transitions. [2021-11-21 00:48:31,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:48:31,726 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 2400 transitions. [2021-11-21 00:48:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:48:31,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:31,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:48:31,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:48:31,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-21 00:48:31,943 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:48:31,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:31,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1131665017, now seen corresponding path program 2 times [2021-11-21 00:48:31,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:31,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101641974] [2021-11-21 00:48:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:31,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 00:48:33,036 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:33,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101641974] [2021-11-21 00:48:33,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101641974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:48:33,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411046597] [2021-11-21 00:48:33,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:48:33,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:33,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:48:33,037 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:48:33,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-21 00:48:33,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 00:48:33,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:48:33,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-21 00:48:33,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:48:33,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:48:33,415 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:48:33,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-11-21 00:48:33,767 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-21 00:48:33,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-21 00:48:33,902 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-21 00:48:33,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-21 00:48:34,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:48:34,466 INFO L354 Elim1Store]: treesize reduction 106, result has 27.9 percent of original size [2021-11-21 00:48:34,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 40 treesize of output 56 [2021-11-21 00:48:37,704 INFO L354 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2021-11-21 00:48:37,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 58 treesize of output 71 [2021-11-21 00:48:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:48:38,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:51:24,148 WARN L227 SmtUtils]: Spent 24.49s on a formula simplification. DAG size of input: 875 DAG size of output: 443 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:51:24,149 INFO L354 Elim1Store]: treesize reduction 4212, result has 35.8 percent of original size [2021-11-21 00:51:24,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 33124780 treesize of output 13110488 [2021-11-21 00:51:52,354 WARN L227 SmtUtils]: Spent 28.20s on a formula simplification that was a NOOP. DAG size: 4974 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:52:20,994 WARN L227 SmtUtils]: Spent 28.60s on a formula simplification that was a NOOP. DAG size: 4992 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:52:22,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:52:22,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 18868983 treesize of output 18836319 [2021-11-21 00:52:50,501 WARN L227 SmtUtils]: Spent 28.44s on a formula simplification that was a NOOP. DAG size: 5040 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:52:51,362 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:52:51,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 18836319 treesize of output 18750407 [2021-11-21 00:53:20,125 WARN L227 SmtUtils]: Spent 28.75s on a formula simplification that was a NOOP. DAG size: 5084 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:53:20,887 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:53:20,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 18750407 treesize of output 18359963 [2021-11-21 00:53:50,197 WARN L227 SmtUtils]: Spent 29.30s on a formula simplification that was a NOOP. DAG size: 5128 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:53:51,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:53:51,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 18359963 treesize of output 18278147 [2021-11-21 00:54:21,008 WARN L227 SmtUtils]: Spent 29.82s on a formula simplification that was a NOOP. DAG size: 5172 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:54:22,180 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:54:22,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 18278147 treesize of output 17310915 [2021-11-21 00:54:52,587 WARN L227 SmtUtils]: Spent 30.40s on a formula simplification that was a NOOP. DAG size: 5216 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:54:53,509 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:54:53,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 17310915 treesize of output 16487019 [2021-11-21 00:55:24,369 WARN L227 SmtUtils]: Spent 30.85s on a formula simplification that was a NOOP. DAG size: 5260 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:55:27,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:55:27,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 16487019 treesize of output 16470739 [2021-11-21 00:55:58,522 WARN L227 SmtUtils]: Spent 31.27s on a formula simplification that was a NOOP. DAG size: 5304 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:56:00,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:56:00,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 16470739 treesize of output 16446267 [2021-11-21 00:56:31,821 WARN L227 SmtUtils]: Spent 31.70s on a formula simplification that was a NOOP. DAG size: 5348 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:56:48,579 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:56:48,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1247020411] [2021-11-21 00:56:48,580 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1603) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:226) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 00:56:48,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:56:48,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-11-21 00:56:48,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76231276] [2021-11-21 00:56:48,582 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 00:56:48,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 00:56:48,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:56:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 00:56:48,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1604, Unknown=64, NotChecked=0, Total=1806 [2021-11-21 00:56:48,584 INFO L87 Difference]: Start difference. First operand 728 states and 2400 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:52,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:56:52,699 INFO L93 Difference]: Finished difference Result 1964 states and 6510 transitions. [2021-11-21 00:56:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-21 00:56:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-21 00:56:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:56:52,714 INFO L225 Difference]: With dead ends: 1964 [2021-11-21 00:56:52,715 INFO L226 Difference]: Without dead ends: 1957 [2021-11-21 00:56:52,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 147.4s TimeCoverageRelationStatistics Valid=407, Invalid=2950, Unknown=65, NotChecked=0, Total=3422 [2021-11-21 00:56:52,717 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 197 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:56:52,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 116 Invalid, 1305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 00:56:52,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-11-21 00:56:52,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 742. [2021-11-21 00:56:52,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 742 states, 741 states have (on average 3.3036437246963564) internal successors, (2448), 741 states have internal predecessors, (2448), 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) [2021-11-21 00:56:52,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 2448 transitions. [2021-11-21 00:56:52,756 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 2448 transitions. Word has length 33 [2021-11-21 00:56:52,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:56:52,757 INFO L470 AbstractCegarLoop]: Abstraction has 742 states and 2448 transitions. [2021-11-21 00:56:52,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:56:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 2448 transitions. [2021-11-21 00:56:52,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:56:52,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:56:52,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:56:52,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:56:52,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:56:52,983 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-21 00:56:52,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:56:52,983 INFO L85 PathProgramCache]: Analyzing trace with hash 422351493, now seen corresponding path program 3 times [2021-11-21 00:56:52,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:56:52,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813196952] [2021-11-21 00:56:52,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:56:52,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:56:53,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:56:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:56:53,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:56:53,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813196952] [2021-11-21 00:56:53,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813196952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:56:53,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54782546] [2021-11-21 00:56:53,958 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:56:53,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:56:53,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:56:53,959 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:56:53,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95956f4e-ee68-488a-9839-b7f6350b00fc/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 00:56:54,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:56:54,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:56:54,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-21 00:56:54,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:56:54,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:56:54,224 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:56:54,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-21 00:56:54,339 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-21 00:56:54,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-11-21 00:56:54,685 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-21 00:56:54,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-21 00:56:54,783 INFO L354 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2021-11-21 00:56:54,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-11-21 00:56:55,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:56:55,259 INFO L354 Elim1Store]: treesize reduction 75, result has 20.2 percent of original size [2021-11-21 00:56:55,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 38 [2021-11-21 00:57:02,475 INFO L354 Elim1Store]: treesize reduction 56, result has 41.1 percent of original size [2021-11-21 00:57:02,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 66 [2021-11-21 00:57:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:57:05,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:57:44,407 WARN L838 $PredicateComparison]: unable to prove that (forall ((~C2~0.offset Int) (~C1~0.offset Int) (|v_ULTIMATE.start_main_~k~0#1_61| Int)) (or (< |v_ULTIMATE.start_main_~k~0#1_61| 0) (<= 1 |v_ULTIMATE.start_main_~k~0#1_61|) (let ((.cse0 (store |c_#memory_int| c_~C2~0.base (store (select |c_#memory_int| c_~C2~0.base) ~C2~0.offset (+ (select (select |c_#memory_int| c_~B~0.base) c_~B~0.offset) (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset)))))) (let ((.cse1 (let ((.cse3 (* c_thread1Thread1of1ForFork0_~i~0 4))) (store (select .cse0 c_~C1~0.base) (+ .cse3 ~C1~0.offset) (+ (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset .cse3)) |c_thread1Thread1of1ForFork0_#t~mem2|)))) (.cse2 (* |v_ULTIMATE.start_main_~k~0#1_61| 4))) (= (mod (select (select (store .cse0 c_~C1~0.base .cse1) c_~C2~0.base) (+ .cse2 ~C2~0.offset)) 4294967296) (mod (select .cse1 (+ .cse2 ~C1~0.offset)) 4294967296)))))) is different from false [2021-11-21 00:57:46,457 WARN L838 $PredicateComparison]: unable to prove that (forall ((~C2~0.offset Int) (|ULTIMATE.start_main_~#t3~0#1.offset| Int) (~C1~0.offset Int) (|v_ULTIMATE.start_main_#t~pre20#1_53| Int) (|v_ULTIMATE.start_main_~k~0#1_61| Int)) (or (< |v_ULTIMATE.start_main_~k~0#1_61| 0) (<= 1 |v_ULTIMATE.start_main_~k~0#1_61|) (let ((.cse0 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |v_ULTIMATE.start_main_#t~pre20#1_53|)))) (store .cse4 c_~C2~0.base (store (select .cse4 c_~C2~0.base) ~C2~0.offset (+ (select (select .cse4 c_~B~0.base) c_~B~0.offset) (select (select .cse4 c_~A~0.base) c_~A~0.offset))))))) (let ((.cse1 (let ((.cse3 (* c_thread1Thread1of1ForFork0_~i~0 4))) (store (select .cse0 c_~C1~0.base) (+ .cse3 ~C1~0.offset) (+ |c_thread1Thread1of1ForFork0_#t~mem2| (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset .cse3)))))) (.cse2 (* |v_ULTIMATE.start_main_~k~0#1_61| 4))) (= (mod (select (select (store .cse0 c_~C1~0.base .cse1) c_~C2~0.base) (+ .cse2 ~C2~0.offset)) 4294967296) (mod (select .cse1 (+ .cse2 ~C1~0.offset)) 4294967296)))))) is different from false [2021-11-21 00:57:48,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((~C2~0.offset Int) (|v_ULTIMATE.start_main_#t~pre18#1_60| Int) (|ULTIMATE.start_main_~#t3~0#1.offset| Int) (~C1~0.offset Int) (|ULTIMATE.start_main_~#t2~0#1.offset| Int) (|v_ULTIMATE.start_main_#t~pre20#1_53| Int) (|v_ULTIMATE.start_main_~k~0#1_61| Int)) (or (< |v_ULTIMATE.start_main_~k~0#1_61| 0) (<= 1 |v_ULTIMATE.start_main_~k~0#1_61|) (let ((.cse0 (let ((.cse4 (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base|) |ULTIMATE.start_main_~#t2~0#1.offset| |v_ULTIMATE.start_main_#t~pre18#1_60|)))) (store .cse5 |c_ULTIMATE.start_main_~#t3~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#t3~0#1.base|) |ULTIMATE.start_main_~#t3~0#1.offset| |v_ULTIMATE.start_main_#t~pre20#1_53|))))) (store .cse4 c_~C2~0.base (store (select .cse4 c_~C2~0.base) ~C2~0.offset (+ (select (select .cse4 c_~B~0.base) c_~B~0.offset) (select (select .cse4 c_~A~0.base) c_~A~0.offset))))))) (let ((.cse1 (let ((.cse3 (* c_thread1Thread1of1ForFork0_~i~0 4))) (store (select .cse0 c_~C1~0.base) (+ .cse3 ~C1~0.offset) (+ (select (select .cse0 c_~B~0.base) (+ c_~B~0.offset .cse3)) |c_thread1Thread1of1ForFork0_#t~mem2|)))) (.cse2 (* |v_ULTIMATE.start_main_~k~0#1_61| 4))) (= (mod (select (select (store .cse0 c_~C1~0.base .cse1) c_~C2~0.base) (+ .cse2 ~C2~0.offset)) 4294967296) (mod (select .cse1 (+ .cse2 ~C1~0.offset)) 4294967296)))))) is different from false [2021-11-21 00:58:49,680 WARN L227 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 875 DAG size of output: 403 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:58:49,682 INFO L354 Elim1Store]: treesize reduction 4552, result has 30.6 percent of original size [2021-11-21 00:58:49,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 8 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 13 new quantified variables, introduced 74 case distinctions, treesize of input 7912492 treesize of output 2933764 [2021-11-21 00:58:57,228 WARN L227 SmtUtils]: Spent 7.54s on a formula simplification that was a NOOP. DAG size: 1938 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:59:04,785 WARN L227 SmtUtils]: Spent 7.53s on a formula simplification that was a NOOP. DAG size: 1956 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 00:59:06,320 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:59:06,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4667824 treesize of output 4569606