./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/string-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/string-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw --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 fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/string-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw --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 fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:14:24,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:14:24,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:14:24,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:14:24,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:14:24,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:14:24,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:14:24,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:14:24,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:14:24,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:14:24,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:14:24,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:14:24,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:14:24,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:14:24,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:14:24,762 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:14:24,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:14:24,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:14:24,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:14:24,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:14:24,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:14:24,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:14:24,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:14:24,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:14:24,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:14:24,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:14:24,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:14:24,798 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:14:24,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:14:24,800 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:14:24,801 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:14:24,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:14:24,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:14:24,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:14:24,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:14:24,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:14:24,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:14:24,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:14:24,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:14:24,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:14:24,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:14:24,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:14:24,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:14:24,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:14:24,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:14:24,874 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:14:24,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:14:24,874 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:14:24,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:14:24,874 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:14:24,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:14:24,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:14:24,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:14:24,883 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:14:24,883 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:14:24,883 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:14:24,883 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:14:24,885 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:14:24,885 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:14:24,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:14:24,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:14:24,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:14:24,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:14:24,886 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:14:24,886 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:14:24,886 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:14:24,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:14:24,887 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:14:24,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:14:24,887 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:14:24,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:14:24,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:14:24,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:24,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:14:24,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:14:24,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:14:24,890 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:14:24,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:14:24,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:14:24,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:14:24,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:14:24,891 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_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 [2021-10-20 06:14:25,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:14:25,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:14:25,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:14:25,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:14:25,242 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:14:25,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loops/string-2.i [2021-10-20 06:14:25,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/bf9120c11/02968ffff3fa46bfa8046118299d0689/FLAG91d3d0a75 [2021-10-20 06:14:25,838 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:14:25,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/sv-benchmarks/c/loops/string-2.i [2021-10-20 06:14:25,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/bf9120c11/02968ffff3fa46bfa8046118299d0689/FLAG91d3d0a75 [2021-10-20 06:14:26,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/bf9120c11/02968ffff3fa46bfa8046118299d0689 [2021-10-20 06:14:26,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:14:26,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:14:26,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:26,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:14:26,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:14:26,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cdcb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26, skipping insertion in model container [2021-10-20 06:14:26,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:14:26,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:14:26,581 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/sv-benchmarks/c/loops/string-2.i[896,909] [2021-10-20 06:14:26,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:26,613 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:14:26,628 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/sv-benchmarks/c/loops/string-2.i[896,909] [2021-10-20 06:14:26,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:26,656 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:14:26,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26 WrapperNode [2021-10-20 06:14:26,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:26,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:26,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:14:26,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:14:26,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:26,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:14:26,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:14:26,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:14:26,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:14:26,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:14:26,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:14:26,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:14:26,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (1/1) ... [2021-10-20 06:14:26,747 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:26,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:26,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:14:26,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:14:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:14:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:14:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-20 06:14:26,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:14:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:14:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-20 06:14:26,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:14:27,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:14:27,340 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-20 06:14:27,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:27 BoogieIcfgContainer [2021-10-20 06:14:27,343 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:14:27,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:14:27,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:14:27,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:14:27,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:14:26" (1/3) ... [2021-10-20 06:14:27,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197e3bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:27, skipping insertion in model container [2021-10-20 06:14:27,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:26" (2/3) ... [2021-10-20 06:14:27,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@197e3bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:27, skipping insertion in model container [2021-10-20 06:14:27,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:27" (3/3) ... [2021-10-20 06:14:27,353 INFO L111 eAbstractionObserver]: Analyzing ICFG string-2.i [2021-10-20 06:14:27,359 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:14:27,360 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:14:27,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:14:27,418 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 [2021-10-20 06:14:27,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:14:27,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:27,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-20 06:14:27,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:27,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:27,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -410377913, now seen corresponding path program 1 times [2021-10-20 06:14:27,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:27,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82659020] [2021-10-20 06:14:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:27,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:27,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:27,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:27,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82659020] [2021-10-20 06:14:27,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82659020] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:27,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:27,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:14:27,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513399870] [2021-10-20 06:14:27,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:14:27,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:27,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:14:27,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:14:27,726 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:27,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:27,787 INFO L93 Difference]: Finished difference Result 43 states and 65 transitions. [2021-10-20 06:14:27,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:14:27,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-20 06:14:27,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:27,800 INFO L225 Difference]: With dead ends: 43 [2021-10-20 06:14:27,800 INFO L226 Difference]: Without dead ends: 21 [2021-10-20 06:14:27,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:14:27,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-20 06:14:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2021-10-20 06:14:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-10-20 06:14:27,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-10-20 06:14:27,842 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 12 [2021-10-20 06:14:27,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:27,843 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-20 06:14:27,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:27,843 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-10-20 06:14:27,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:14:27,844 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:27,844 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:27,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:14:27,845 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:27,849 INFO L82 PathProgramCache]: Analyzing trace with hash -650006370, now seen corresponding path program 1 times [2021-10-20 06:14:27,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:27,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722604447] [2021-10-20 06:14:27,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:27,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:27,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:14:27,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:27,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722604447] [2021-10-20 06:14:27,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722604447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:14:27,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806447893] [2021-10-20 06:14:27,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:27,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:27,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:27,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:27,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:14:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:28,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-20 06:14:28,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:14:28,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-20 06:14:28,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806447893] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:28,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1079053837] [2021-10-20 06:14:28,333 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-20 06:14:28,333 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:14:28,342 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:14:28,350 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:14:28,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:14:28,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-20 06:14:28,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-20 06:14:28,450 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-20 06:14:28,482 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 36=[|v_#valid_26|]} [2021-10-20 06:14:28,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-20 06:14:28,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:28,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,543 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:28,550 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:28,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:28,603 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,666 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-20 06:14:28,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-10-20 06:14:28,668 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-20 06:14:28,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,679 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-20 06:14:28,680 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:28,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:28,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,738 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-10-20 06:14:28,739 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:28,740 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:121 [2021-10-20 06:14:28,766 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-20 06:14:28,789 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,792 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-20 06:14:28,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-20 06:14:28,801 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,802 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,805 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:28,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:28,810 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:28,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-20 06:14:28,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-10-20 06:14:28,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:28,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-10-20 06:14:28,845 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:28,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:28,850 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:28,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:28,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:28,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 137 [2021-10-20 06:14:28,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:28,872 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:140, output treesize:137 [2021-10-20 06:14:28,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:28,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:28,955 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,052 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,078 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,085 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,089 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,090 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,091 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-20 06:14:29,093 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,094 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-20 06:14:29,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2021-10-20 06:14:29,105 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 278 [2021-10-20 06:14:29,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 279 [2021-10-20 06:14:29,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,130 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,146 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,161 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,162 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,163 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,167 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,168 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,171 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 47 [2021-10-20 06:14:29,175 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-20 06:14:29,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-10-20 06:14:29,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,187 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-20 06:14:29,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:14:29,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,210 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,211 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,212 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-20 06:14:29,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 311 [2021-10-20 06:14:29,228 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 286 [2021-10-20 06:14:29,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 351 [2021-10-20 06:14:29,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-10-20 06:14:29,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,318 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-20 06:14:29,319 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-20 06:14:29,320 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 48 [2021-10-20 06:14:29,359 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-20 06:14:29,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-10-20 06:14:29,367 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,451 INFO L180 QuantifierPusher]: treesize reduction 106, result has 75.1 percent of original size [2021-10-20 06:14:29,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 327 [2021-10-20 06:14:29,467 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-20 06:14:29,467 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:433, output treesize:327 [2021-10-20 06:14:29,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,577 INFO L180 QuantifierPusher]: treesize reduction 42, result has 62.5 percent of original size [2021-10-20 06:14:29,585 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-20 06:14:29,591 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-20 06:14:29,592 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-20 06:14:29,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-20 06:14:29,609 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:29,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:29,613 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-20 06:14:29,623 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,623 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:65 [2021-10-20 06:14:29,634 INFO L180 QuantifierPusher]: treesize reduction 46, result has 54.9 percent of original size [2021-10-20 06:14:29,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:14:29,651 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size [2021-10-20 06:14:29,658 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,663 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,664 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,667 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:29,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-20 06:14:29,668 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,669 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,670 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:29,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:29,673 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,674 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,675 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-20 06:14:29,676 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-20 06:14:29,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,691 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-20 06:14:29,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,697 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-20 06:14:29,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-20 06:14:29,699 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,703 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,705 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,709 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-20 06:14:29,710 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,710 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:65 [2021-10-20 06:14:29,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,756 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,764 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,769 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,773 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-20 06:14:29,777 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,783 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-10-20 06:14:29,783 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 06:14:29,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-20 06:14:29,791 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,793 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,804 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,809 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,809 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,811 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-20 06:14:29,811 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,813 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,814 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,815 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,816 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,817 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:14:29,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:29,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:29,833 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,834 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-20 06:14:29,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-20 06:14:29,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-20 06:14:29,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-20 06:14:29,843 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:29,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-20 06:14:29,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-20 06:14:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,873 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 0 case distinctions, treesize of input 24 treesize of output 23 [2021-10-20 06:14:29,874 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:29,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:29,878 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:29,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2021-10-20 06:14:29,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-20 06:14:29,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,905 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-20 06:14:29,906 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:29,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:29,932 INFO L180 QuantifierPusher]: treesize reduction 100, result has 60.3 percent of original size [2021-10-20 06:14:29,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-20 06:14:29,937 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-20 06:14:29,937 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:259, output treesize:159 [2021-10-20 06:14:29,941 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,980 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:29,997 INFO L180 QuantifierPusher]: treesize reduction 42, result has 62.5 percent of original size [2021-10-20 06:14:30,001 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:30,002 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,003 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:30,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-20 06:14:30,004 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-20 06:14:30,005 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:30,005 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:30,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-20 06:14:30,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-20 06:14:30,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:30,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:30,017 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:30,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:30,021 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,025 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-20 06:14:30,025 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:30,026 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:65 [2021-10-20 06:14:30,036 INFO L180 QuantifierPusher]: treesize reduction 46, result has 54.9 percent of original size [2021-10-20 06:14:30,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-20 06:14:30,045 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-20 06:14:30,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-20 06:14:30,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,064 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-20 06:14:30,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:30,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-20 06:14:30,082 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:14:31,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:31,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:14:31,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-20 06:14:31,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320157130] [2021-10-20 06:14:31,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 06:14:31,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 06:14:31,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-10-20 06:14:31,128 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-20 06:14:31,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:31,181 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2021-10-20 06:14:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:14:31,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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 16 [2021-10-20 06:14:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:31,182 INFO L225 Difference]: With dead ends: 41 [2021-10-20 06:14:31,182 INFO L226 Difference]: Without dead ends: 27 [2021-10-20 06:14:31,183 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1065.1ms TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-10-20 06:14:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-20 06:14:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-10-20 06:14:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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) [2021-10-20 06:14:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-10-20 06:14:31,188 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-10-20 06:14:31,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:31,188 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-10-20 06:14:31,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-10-20 06:14:31,189 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-10-20 06:14:31,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-20 06:14:31,190 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:31,190 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:31,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-20 06:14:31,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:31,413 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:31,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:31,413 INFO L82 PathProgramCache]: Analyzing trace with hash 522576029, now seen corresponding path program 2 times [2021-10-20 06:14:31,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:31,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365652039] [2021-10-20 06:14:31,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:31,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-20 06:14:31,540 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:14:31,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365652039] [2021-10-20 06:14:31,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365652039] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:14:31,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927663884] [2021-10-20 06:14:31,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-20 06:14:31,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:31,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:31,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:31,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 06:14:31,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-20 06:14:31,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 06:14:31,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:14:31,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-20 06:14:31,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-20 06:14:31,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927663884] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:31,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1200130237] [2021-10-20 06:14:31,850 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-10-20 06:14:31,852 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:14:31,853 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:14:31,853 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:14:31,853 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:14:31,861 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,863 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-20 06:14:31,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,865 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-10-20 06:14:31,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-20 06:14:31,872 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 36=[|v_#valid_27|]} [2021-10-20 06:14:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2021-10-20 06:14:31,891 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:31,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:31,893 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:31,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:31,899 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:31,944 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-20 06:14:31,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 42 [2021-10-20 06:14:31,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-20 06:14:31,950 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,952 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-20 06:14:31,952 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:31,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:31,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,966 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 121 [2021-10-20 06:14:31,969 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:31,970 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:121 [2021-10-20 06:14:31,973 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size [2021-10-20 06:14:31,987 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,989 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,989 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:31,991 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:31,991 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,992 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,995 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,995 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-20 06:14:31,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:14:31,997 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:31,998 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:31,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-20 06:14:32,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-20 06:14:32,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-10-20 06:14:32,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-20 06:14:32,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-20 06:14:32,019 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,026 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,031 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-10-20 06:14:32,032 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,032 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:145, output treesize:145 [2021-10-20 06:14:32,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,093 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,100 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,102 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,102 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,107 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,115 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,119 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,120 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-20 06:14:32,122 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,124 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-20 06:14:32,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 301 [2021-10-20 06:14:32,129 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,136 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 284 [2021-10-20 06:14:32,139 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 285 [2021-10-20 06:14:32,161 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,174 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,179 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,183 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-10-20 06:14:32,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-20 06:14:32,185 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,186 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-20 06:14:32,188 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,193 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,195 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,196 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-20 06:14:32,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:14:32,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-10-20 06:14:32,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 317 [2021-10-20 06:14:32,206 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 292 [2021-10-20 06:14:32,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 357 [2021-10-20 06:14:32,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2021-10-20 06:14:32,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-20 06:14:32,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,255 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-20 06:14:32,256 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2021-10-20 06:14:32,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:14:32,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:14:32,282 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,323 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,335 INFO L180 QuantifierPusher]: treesize reduction 106, result has 75.5 percent of original size [2021-10-20 06:14:32,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 333 [2021-10-20 06:14:32,341 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-20 06:14:32,342 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:439, output treesize:333 [2021-10-20 06:14:32,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,425 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,432 INFO L180 QuantifierPusher]: treesize reduction 42, result has 62.5 percent of original size [2021-10-20 06:14:32,435 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-20 06:14:32,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-20 06:14:32,438 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,440 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-20 06:14:32,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-20 06:14:32,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,447 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:32,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:32,448 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,451 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,453 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-20 06:14:32,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,454 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:65 [2021-10-20 06:14:32,464 INFO L180 QuantifierPusher]: treesize reduction 46, result has 54.9 percent of original size [2021-10-20 06:14:32,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:14:32,468 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.2 percent of original size [2021-10-20 06:14:32,474 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,475 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,475 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,476 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:32,477 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-20 06:14:32,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,479 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:32,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:14:32,481 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-20 06:14:32,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 70 [2021-10-20 06:14:32,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,497 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 0 case distinctions, treesize of input 21 treesize of output 20 [2021-10-20 06:14:32,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-20 06:14:32,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,499 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-20 06:14:32,500 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,502 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-20 06:14:32,506 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,506 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:68, output treesize:65 [2021-10-20 06:14:32,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,532 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,537 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,539 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,541 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,543 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,543 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,544 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,545 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,545 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-20 06:14:32,548 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 133 [2021-10-20 06:14:32,548 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,551 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 06:14:32,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 117 [2021-10-20 06:14:32,568 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,568 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,572 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,572 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,573 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,576 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,580 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,583 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,583 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,584 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-20 06:14:32,584 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,585 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,586 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,586 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,588 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-20 06:14:32,591 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,593 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-20 06:14:32,595 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,597 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,598 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-20 06:14:32,599 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-20 06:14:32,600 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,600 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-20 06:14:32,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 149 [2021-10-20 06:14:32,603 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,604 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 124 [2021-10-20 06:14:32,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-10-20 06:14:32,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,631 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 0 case distinctions, treesize of input 24 treesize of output 23 [2021-10-20 06:14:32,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:32,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-20 06:14:32,634 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:14:32,653 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 38 [2021-10-20 06:14:32,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,656 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-20 06:14:32,657 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-20 06:14:32,658 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,673 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,679 INFO L180 QuantifierPusher]: treesize reduction 100, result has 60.3 percent of original size [2021-10-20 06:14:32,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-20 06:14:32,682 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-20 06:14:32,683 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:259, output treesize:159 [2021-10-20 06:14:32,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,722 INFO L180 QuantifierPusher]: treesize reduction 42, result has 62.5 percent of original size [2021-10-20 06:14:32,725 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-10-20 06:14:32,733 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-20 06:14:32,734 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:14:32,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-20 06:14:32,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-10-20 06:14:32,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-10-20 06:14:32,744 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:32,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-10-20 06:14:32,745 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:14:32,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-10-20 06:14:32,752 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:14:32,752 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:65, output treesize:65 [2021-10-20 06:14:32,759 INFO L180 QuantifierPusher]: treesize reduction 46, result has 54.9 percent of original size [2021-10-20 06:14:32,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-20 06:14:32,765 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,766 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-10-20 06:14:32,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 73 [2021-10-20 06:14:32,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-20 06:14:32,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:14:32,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 112 [2021-10-20 06:14:32,793 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:14:33,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:14:33,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:14:33,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2021-10-20 06:14:33,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433140401] [2021-10-20 06:14:33,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 06:14:33,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:14:33,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 06:14:33,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-20 06:14:33,780 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-20 06:14:33,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:33,817 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-10-20 06:14:33,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:14:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-20 06:14:33,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:33,819 INFO L225 Difference]: With dead ends: 46 [2021-10-20 06:14:33,819 INFO L226 Difference]: Without dead ends: 29 [2021-10-20 06:14:33,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1015.7ms TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-10-20 06:14:33,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-20 06:14:33,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-10-20 06:14:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:33,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-10-20 06:14:33,824 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-10-20 06:14:33,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:33,825 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-10-20 06:14:33,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-10-20 06:14:33,825 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-10-20 06:14:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-20 06:14:33,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:33,826 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:33,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:34,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-20 06:14:34,042 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:34,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:34,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2037411294, now seen corresponding path program 3 times [2021-10-20 06:14:34,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:14:34,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177221792] [2021-10-20 06:14:34,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:34,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:14:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:14:34,093 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:14:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:14:34,153 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-20 06:14:34,153 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:14:34,154 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:34,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-10-20 06:14:34,162 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:14:34,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:14:34 BoogieIcfgContainer [2021-10-20 06:14:34,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:14:34,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:14:34,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:14:34,203 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:14:34,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:27" (3/4) ... [2021-10-20 06:14:34,206 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-20 06:14:34,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:14:34,207 INFO L168 Benchmark]: Toolchain (without parser) took 7966.03 ms. Allocated memory was 77.6 MB in the beginning and 172.0 MB in the end (delta: 94.4 MB). Free memory was 40.9 MB in the beginning and 126.7 MB in the end (delta: -85.8 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:34,208 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory is still 57.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:34,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.24 ms. Allocated memory was 77.6 MB in the beginning and 111.1 MB in the end (delta: 33.6 MB). Free memory was 40.7 MB in the beginning and 86.5 MB in the end (delta: -45.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:34,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 84.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:34,208 INFO L168 Benchmark]: Boogie Preprocessor took 31.90 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:34,208 INFO L168 Benchmark]: RCFGBuilder took 606.36 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 68.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:34,209 INFO L168 Benchmark]: TraceAbstraction took 6856.95 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 68.2 MB in the beginning and 126.7 MB in the end (delta: -58.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:34,209 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 172.0 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:34,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory is still 57.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 412.24 ms. Allocated memory was 77.6 MB in the beginning and 111.1 MB in the end (delta: 33.6 MB). Free memory was 40.7 MB in the beginning and 86.5 MB in the end (delta: -45.8 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.69 ms. Allocated memory is still 111.1 MB. Free memory was 86.2 MB in the beginning and 84.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.90 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 83.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 606.36 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 68.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6856.95 ms. Allocated memory was 111.1 MB in the beginning and 172.0 MB in the end (delta: 60.8 MB). Free memory was 68.2 MB in the beginning and 126.7 MB in the end (delta: -58.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.35 ms. Allocated memory is still 172.0 MB. Free memory is still 126.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 69. Possible FailurePath: [L31] char string_A[5], string_B[5]; [L32] int i, j, nc_A, nc_B, found=0; [L35] i=0 [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND FALSE !(i<5) [L37] EXPR string_A[5 -1] [L37] COND FALSE !(!(string_A[5 -1]=='\0')) [L39] i=0 [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND FALSE !(i<5) [L41] EXPR string_B[5 -1] [L41] COND FALSE !(!(string_B[5 -1]=='\0')) [L43] nc_A = 0 [L44] EXPR string_A[nc_A] [L44] COND FALSE !(string_A[nc_A]!='\0') [L47] nc_B = 0 [L48] EXPR string_B[nc_B] [L48] COND FALSE !(string_B[nc_B]!='\0') [L51] COND FALSE !(!(nc_B >= nc_A)) [L54] EXPR j=0 [L54] i=j=0 [L55] COND FALSE !((inc_B-1)< main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw 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 -> fd601fa28543c13c2fbec075867019b65bb9d0c4bbf720a0162dbf887aa47892 [2021-10-20 06:14:37,574 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:14:37,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:14:37,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:14:37,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:14:37,611 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:14:37,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/loops/string-2.i [2021-10-20 06:14:37,703 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/8d1da82d7/2c9fe89ba2d449658321c0577c067da0/FLAG121a30186 [2021-10-20 06:14:38,365 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:14:38,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/sv-benchmarks/c/loops/string-2.i [2021-10-20 06:14:38,374 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/8d1da82d7/2c9fe89ba2d449658321c0577c067da0/FLAG121a30186 [2021-10-20 06:14:38,704 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/data/8d1da82d7/2c9fe89ba2d449658321c0577c067da0 [2021-10-20 06:14:38,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:14:38,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:14:38,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:38,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:14:38,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:14:38,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:38" (1/1) ... [2021-10-20 06:14:38,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b83273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:38, skipping insertion in model container [2021-10-20 06:14:38,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:14:38" (1/1) ... [2021-10-20 06:14:38,736 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:14:38,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:14:38,930 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/sv-benchmarks/c/loops/string-2.i[896,909] [2021-10-20 06:14:38,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:38,982 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:14:39,019 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/sv-benchmarks/c/loops/string-2.i[896,909] [2021-10-20 06:14:39,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:14:39,050 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:14:39,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39 WrapperNode [2021-10-20 06:14:39,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:14:39,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:39,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:14:39,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:14:39,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:14:39,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:14:39,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:14:39,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:14:39,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:14:39,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:14:39,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:14:39,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:14:39,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (1/1) ... [2021-10-20 06:14:39,146 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:14:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:39,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:14:39,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:14:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-10-20 06:14:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-20 06:14:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:14:39,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:14:39,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:14:39,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-10-20 06:14:39,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-20 06:14:39,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:14:39,732 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-20 06:14:39,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:39 BoogieIcfgContainer [2021-10-20 06:14:39,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:14:39,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:14:39,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:14:39,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:14:39,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:14:38" (1/3) ... [2021-10-20 06:14:39,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5ff481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:39, skipping insertion in model container [2021-10-20 06:14:39,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:14:39" (2/3) ... [2021-10-20 06:14:39,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5ff481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:14:39, skipping insertion in model container [2021-10-20 06:14:39,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:39" (3/3) ... [2021-10-20 06:14:39,745 INFO L111 eAbstractionObserver]: Analyzing ICFG string-2.i [2021-10-20 06:14:39,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:14:39,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-20 06:14:39,820 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:14:39,830 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 [2021-10-20 06:14:39,831 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-20 06:14:39,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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) [2021-10-20 06:14:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-20 06:14:39,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:39,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:39,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash 374782792, now seen corresponding path program 1 times [2021-10-20 06:14:39,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:14:39,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274267871] [2021-10-20 06:14:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:39,899 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:14:39,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:14:39,903 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:14:39,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-20 06:14:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:40,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-20 06:14:40,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:40,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:40,206 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:14:40,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274267871] [2021-10-20 06:14:40,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274267871] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:40,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:40,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-20 06:14:40,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931004339] [2021-10-20 06:14:40,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-20 06:14:40,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:14:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-20 06:14:40,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:14:40,234 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-20 06:14:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:40,253 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2021-10-20 06:14:40,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-20 06:14:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-10-20 06:14:40,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:40,280 INFO L225 Difference]: With dead ends: 48 [2021-10-20 06:14:40,281 INFO L226 Difference]: Without dead ends: 22 [2021-10-20 06:14:40,284 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-20 06:14:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-20 06:14:40,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-20 06:14:40,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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) [2021-10-20 06:14:40,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2021-10-20 06:14:40,319 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2021-10-20 06:14:40,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:40,320 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2021-10-20 06:14:40,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-10-20 06:14:40,321 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2021-10-20 06:14:40,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-20 06:14:40,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:40,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:40,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:40,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:14:40,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:40,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1602331574, now seen corresponding path program 1 times [2021-10-20 06:14:40,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:14:40,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878884364] [2021-10-20 06:14:40,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:40,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:14:40,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:14:40,540 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:14:40,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-20 06:14:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:40,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-20 06:14:40,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:40,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:14:40,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:14:40,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878884364] [2021-10-20 06:14:40,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878884364] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:40,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:14:40,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 06:14:40,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155804061] [2021-10-20 06:14:40,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:14:40,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:14:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:14:40,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:40,888 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:41,007 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-10-20 06:14:41,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:14:41,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-20 06:14:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:41,011 INFO L225 Difference]: With dead ends: 58 [2021-10-20 06:14:41,012 INFO L226 Difference]: Without dead ends: 40 [2021-10-20 06:14:41,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:14:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-20 06:14:41,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2021-10-20 06:14:41,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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) [2021-10-20 06:14:41,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-10-20 06:14:41,035 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2021-10-20 06:14:41,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:41,035 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-10-20 06:14:41,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:41,035 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-10-20 06:14:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-20 06:14:41,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:41,037 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:41,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:41,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:14:41,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:41,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1590720246, now seen corresponding path program 1 times [2021-10-20 06:14:41,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:14:41,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480331240] [2021-10-20 06:14:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:41,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:14:41,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:14:41,252 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:14:41,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-20 06:14:41,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:41,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:41,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:41,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-20 06:14:41,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-20 06:14:41,630 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:14:41,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480331240] [2021-10-20 06:14:41,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480331240] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:41,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1931614294] [2021-10-20 06:14:41,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:41,631 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:14:41,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:14:41,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:14:41,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-20 06:14:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:41,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:41,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:41,886 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-20 06:14:41,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-20 06:14:41,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1931614294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:41,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464467311] [2021-10-20 06:14:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:41,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:41,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:41,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:42,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-20 06:14:42,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:42,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-20 06:14:42,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:42,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-20 06:14:42,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-20 06:14:42,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464467311] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:42,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-20 06:14:42,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [5, 5, 5, 5] total 13 [2021-10-20 06:14:42,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327232763] [2021-10-20 06:14:42,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-20 06:14:42,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:14:42,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-20 06:14:42,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-10-20 06:14:42,577 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:42,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:42,870 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-20 06:14:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:14:42,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-10-20 06:14:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:42,872 INFO L225 Difference]: With dead ends: 43 [2021-10-20 06:14:42,872 INFO L226 Difference]: Without dead ends: 31 [2021-10-20 06:14:42,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 218.4ms TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:14:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-20 06:14:42,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-20 06:14:42,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:42,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-10-20 06:14:42,886 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 26 [2021-10-20 06:14:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:42,887 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-10-20 06:14:42,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-10-20 06:14:42,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-20 06:14:42,890 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:42,890 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:42,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:43,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:43,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:43,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:43,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash 2056002324, now seen corresponding path program 1 times [2021-10-20 06:14:43,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:14:43,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620309326] [2021-10-20 06:14:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:43,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:14:43,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:14:43,500 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:14:43,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-20 06:14:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:43,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:43,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-20 06:14:43,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:43,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-20 06:14:43,934 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:14:43,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620309326] [2021-10-20 06:14:43,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620309326] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:43,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1648788334] [2021-10-20 06:14:43,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:43,935 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:14:43,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:14:43,938 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:14:43,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-20 06:14:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:44,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:44,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-20 06:14:44,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-20 06:14:44,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1648788334] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:44,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866887118] [2021-10-20 06:14:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:44,318 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:44,319 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:44,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-20 06:14:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:44,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:44,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:44,610 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-20 06:14:44,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:44,727 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-20 06:14:44,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866887118] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:14:44,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-20 06:14:44,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5, 5, 5] total 12 [2021-10-20 06:14:44,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760208861] [2021-10-20 06:14:44,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-20 06:14:44,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:14:44,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-20 06:14:44,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-20 06:14:44,732 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-10-20 06:14:44,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:44,806 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-10-20 06:14:44,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:14:44,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 [2021-10-20 06:14:44,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:44,809 INFO L225 Difference]: With dead ends: 46 [2021-10-20 06:14:44,809 INFO L226 Difference]: Without dead ends: 33 [2021-10-20 06:14:44,810 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 101.3ms TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-20 06:14:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-20 06:14:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-20 06:14:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.1875) internal successors, (38), 32 states have internal predecessors, (38), 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) [2021-10-20 06:14:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2021-10-20 06:14:44,817 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 30 [2021-10-20 06:14:44,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:44,817 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2021-10-20 06:14:44,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-10-20 06:14:44,818 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2021-10-20 06:14:44,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-20 06:14:44,819 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:44,819 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:44,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:45,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:45,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:45,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt [2021-10-20 06:14:45,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:45,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:45,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1910701689, now seen corresponding path program 1 times [2021-10-20 06:14:45,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:14:45,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833792198] [2021-10-20 06:14:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:45,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:14:45,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:14:45,449 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:14:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-20 06:14:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:45,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-20 06:14:45,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:45,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-20 06:14:45,825 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-20 06:14:45,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833792198] [2021-10-20 06:14:45,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833792198] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:45,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [66352401] [2021-10-20 06:14:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:45,826 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-20 06:14:45,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 [2021-10-20 06:14:45,830 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-20 06:14:45,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-20 06:14:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:46,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:46,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-20 06:14:46,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:46,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-20 06:14:46,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [66352401] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:46,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142879372] [2021-10-20 06:14:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:14:46,306 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:14:46,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:14:46,322 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:14:46,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-20 06:14:46,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:14:46,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-20 06:14:46,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:14:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-20 06:14:46,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:14:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-20 06:14:46,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142879372] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:14:46,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-20 06:14:46,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-20 06:14:46,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84330196] [2021-10-20 06:14:46,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-20 06:14:46,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-20 06:14:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-20 06:14:46,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-20 06:14:46,737 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-10-20 06:14:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:14:47,029 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2021-10-20 06:14:47,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-20 06:14:47,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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 32 [2021-10-20 06:14:47,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:14:47,031 INFO L225 Difference]: With dead ends: 96 [2021-10-20 06:14:47,032 INFO L226 Difference]: Without dead ends: 70 [2021-10-20 06:14:47,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-20 06:14:47,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-20 06:14:47,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 45. [2021-10-20 06:14:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 44 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:14:47,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-10-20 06:14:47,040 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2021-10-20 06:14:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:14:47,040 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-10-20 06:14:47,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 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) [2021-10-20 06:14:47,041 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-10-20 06:14:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-20 06:14:47,049 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:14:47,050 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:14:47,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:47,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:47,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:47,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:14:47,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:14:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:14:47,653 INFO L82 PathProgramCache]: Analyzing trace with hash -512239655, now seen corresponding path program 2 times [2021-10-20 06:14:47,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-20 06:14:47,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616539568] [2021-10-20 06:14:47,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-20 06:14:47,654 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-20 06:14:47,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat [2021-10-20 06:14:47,655 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-20 06:14:47,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-20 06:14:47,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-20 06:14:47,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-20 06:14:47,945 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-20 06:14:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-20 06:14:48,177 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-20 06:14:48,177 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-20 06:14:48,178 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:14:48,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-20 06:14:48,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/mathsat -unsat_core_generation=3 [2021-10-20 06:14:48,395 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:14:48,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:14:48 BoogieIcfgContainer [2021-10-20 06:14:48,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:14:48,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:14:48,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:14:48,462 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:14:48,462 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:14:39" (3/4) ... [2021-10-20 06:14:48,464 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-20 06:14:48,550 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0408e87b-cfe1-4142-9183-6b35c4856437/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:14:48,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:14:48,552 INFO L168 Benchmark]: Toolchain (without parser) took 9838.49 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 34.8 MB in the beginning and 25.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:48,552 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:48,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.79 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 38.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:48,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 37.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:14:48,554 INFO L168 Benchmark]: Boogie Preprocessor took 35.38 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 35.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:48,554 INFO L168 Benchmark]: RCFGBuilder took 599.20 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 51.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:48,569 INFO L168 Benchmark]: TraceAbstraction took 8723.23 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 28.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:48,569 INFO L168 Benchmark]: Witness Printer took 89.16 ms. Allocated memory is still 69.2 MB. Free memory was 28.8 MB in the beginning and 25.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:14:48,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 56.6 MB. Free memory is still 37.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.79 ms. Allocated memory is still 56.6 MB. Free memory was 34.6 MB in the beginning and 38.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.60 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 37.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.38 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 35.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 599.20 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.5 MB in the beginning and 51.0 MB in the end (delta: -15.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8723.23 ms. Allocated memory is still 69.2 MB. Free memory was 50.7 MB in the beginning and 28.8 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 16.1 GB. * Witness Printer took 89.16 ms. Allocated memory is still 69.2 MB. Free memory was 28.8 MB in the beginning and 25.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L31] char string_A[5], string_B[5]; [L32] int i, j, nc_A, nc_B, found=0; [L35] i=0 [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND TRUE i<5 [L36] string_A[i]=__VERIFIER_nondet_char() [L35] i++ [L35] COND FALSE !(i<5) [L37] EXPR string_A[5 -1] [L37] COND FALSE !(!(string_A[5 -1]=='\0')) [L39] i=0 [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND TRUE i<5 [L40] string_B[i]=__VERIFIER_nondet_char() [L39] i++ [L39] COND FALSE !(i<5) [L41] EXPR string_B[5 -1] [L41] COND FALSE !(!(string_B[5 -1]=='\0')) [L43] nc_A = 0 [L44] EXPR string_A[nc_A] [L44] COND TRUE string_A[nc_A]!='\0' [L45] nc_A++ [L44] EXPR string_A[nc_A] [L44] COND FALSE !(string_A[nc_A]!='\0') [L47] nc_B = 0 [L48] EXPR string_B[nc_B] [L48] COND TRUE string_B[nc_B]!='\0' [L49] nc_B++ [L48] EXPR string_B[nc_B] [L48] COND FALSE !(string_B[nc_B]!='\0') [L51] COND FALSE !(!(nc_B >= nc_A)) [L54] EXPR j=0 [L54] i=j=0 [L55] COND TRUE (inc_B-1)<