./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bor5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG --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 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/bor5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG --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 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:22:02,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:22:02,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:22:02,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:22:02,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:22:02,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:22:02,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:22:02,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:22:02,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:22:02,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:22:02,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:22:02,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:22:02,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:22:02,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:22:02,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:22:02,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:22:02,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:22:02,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:22:02,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:22:02,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:22:02,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:22:02,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:22:02,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:22:02,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:22:02,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:22:02,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:22:02,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:22:02,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:22:02,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:22:02,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:22:02,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:22:02,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:22:02,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:22:02,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:22:02,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:22:02,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:22:02,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:22:02,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:22:02,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:22:02,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:22:02,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:22:02,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:22:02,183 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:22:02,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:22:02,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:22:02,185 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:22:02,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:22:02,186 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:22:02,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:22:02,186 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:22:02,186 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:22:02,191 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:22:02,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:22:02,192 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:22:02,192 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:22:02,193 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:22:02,193 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:22:02,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:22:02,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:22:02,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:22:02,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:22:02,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:22:02,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:22:02,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:22:02,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:22:02,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:22:02,198 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:22:02,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:22:02,199 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:22:02,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:22:02,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:22:02,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:22:02,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:02,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:22:02,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:22:02,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:22:02,203 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:22:02,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:22:02,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:22:02,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:22:02,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:22:02,205 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_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 [2021-10-29 05:22:02,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:22:02,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:22:02,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:22:02,549 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:22:02,550 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:22:02,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-29 05:22:02,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/2fcb65548/8f518ba2ee60456985eba4031a64ea9f/FLAG6691c3a41 [2021-10-29 05:22:03,349 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:22:03,349 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/sv-benchmarks/c/array-crafted/bor5.i [2021-10-29 05:22:03,357 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/2fcb65548/8f518ba2ee60456985eba4031a64ea9f/FLAG6691c3a41 [2021-10-29 05:22:03,718 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/2fcb65548/8f518ba2ee60456985eba4031a64ea9f [2021-10-29 05:22:03,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:22:03,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:22:03,725 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:03,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:22:03,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:22:03,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:03" (1/1) ... [2021-10-29 05:22:03,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4120994f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:03, skipping insertion in model container [2021-10-29 05:22:03,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:03" (1/1) ... [2021-10-29 05:22:03,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:22:03,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:22:03,999 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_e2db9824-ab2e-4a41-82f0-255462ca5e70/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-29 05:22:04,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:04,013 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:22:04,041 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_e2db9824-ab2e-4a41-82f0-255462ca5e70/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-29 05:22:04,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:04,056 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:22:04,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04 WrapperNode [2021-10-29 05:22:04,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:04,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:04,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:22:04,059 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:22:04,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,110 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:04,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:22:04,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:22:04,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:22:04,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:22:04,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:22:04,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:22:04,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:22:04,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (1/1) ... [2021-10-29 05:22:04,162 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:04,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:04,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:22:04,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:22:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:22:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:22:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:22:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:22:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:22:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:22:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:22:04,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:22:04,844 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-29 05:22:04,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:04 BoogieIcfgContainer [2021-10-29 05:22:04,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:22:04,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:22:04,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:22:04,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:22:04,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:22:03" (1/3) ... [2021-10-29 05:22:04,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25433abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:04, skipping insertion in model container [2021-10-29 05:22:04,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:04" (2/3) ... [2021-10-29 05:22:04,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25433abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:04, skipping insertion in model container [2021-10-29 05:22:04,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:04" (3/3) ... [2021-10-29 05:22:04,857 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-29 05:22:04,864 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:22:04,864 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:22:04,926 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:22:04,934 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 [2021-10-29 05:22:04,935 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:22:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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) [2021-10-29 05:22:04,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:22:04,958 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:04,959 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:04,960 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:04,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:04,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1392646538, now seen corresponding path program 1 times [2021-10-29 05:22:04,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:04,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383583208] [2021-10-29 05:22:04,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:04,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:05,301 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:05,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383583208] [2021-10-29 05:22:05,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383583208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:05,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:05,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:22:05,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707866979] [2021-10-29 05:22:05,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:22:05,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:05,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:22:05,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:22:05,337 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-29 05:22:05,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:05,408 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2021-10-29 05:22:05,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:22:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-10-29 05:22:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:05,423 INFO L225 Difference]: With dead ends: 24 [2021-10-29 05:22:05,423 INFO L226 Difference]: Without dead ends: 11 [2021-10-29 05:22:05,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:22:05,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-29 05:22:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-29 05:22:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 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) [2021-10-29 05:22:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2021-10-29 05:22:05,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 15 transitions. Word has length 9 [2021-10-29 05:22:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:05,467 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 15 transitions. [2021-10-29 05:22:05,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-10-29 05:22:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 15 transitions. [2021-10-29 05:22:05,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:22:05,469 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:05,469 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:05,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:22:05,470 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:05,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash -13332003, now seen corresponding path program 1 times [2021-10-29 05:22:05,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:05,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391936164] [2021-10-29 05:22:05,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:05,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:05,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:05,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-29 05:22:05,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:05,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391936164] [2021-10-29 05:22:05,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391936164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:05,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:05,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:22:05,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377398613] [2021-10-29 05:22:05,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:05,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:05,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:05,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:05,599 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:22:05,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:05,647 INFO L93 Difference]: Finished difference Result 20 states and 29 transitions. [2021-10-29 05:22:05,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:05,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-29 05:22:05,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:05,649 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:22:05,650 INFO L226 Difference]: Without dead ends: 14 [2021-10-29 05:22:05,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:05,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-29 05:22:05,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-29 05:22:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 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) [2021-10-29 05:22:05,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2021-10-29 05:22:05,656 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2021-10-29 05:22:05,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:05,657 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 18 transitions. [2021-10-29 05:22:05,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:22:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2021-10-29 05:22:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:22:05,658 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:05,659 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:05,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:22:05,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1561250112, now seen corresponding path program 1 times [2021-10-29 05:22:05,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:05,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413959356] [2021-10-29 05:22:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:05,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:05,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:05,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413959356] [2021-10-29 05:22:05,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413959356] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:05,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:05,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:22:05,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800339507] [2021-10-29 05:22:05,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:05,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:05,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:05,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:05,791 INFO L87 Difference]: Start difference. First operand 14 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-29 05:22:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:05,828 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2021-10-29 05:22:05,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:05,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-10-29 05:22:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:05,830 INFO L225 Difference]: With dead ends: 20 [2021-10-29 05:22:05,831 INFO L226 Difference]: Without dead ends: 15 [2021-10-29 05:22:05,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:05,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-29 05:22:05,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-29 05:22:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-10-29 05:22:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-10-29 05:22:05,846 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 13 [2021-10-29 05:22:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:05,846 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-10-29 05:22:05,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-29 05:22:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-10-29 05:22:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:22:05,850 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:05,850 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:05,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:22:05,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:05,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:05,852 INFO L85 PathProgramCache]: Analyzing trace with hash 592403004, now seen corresponding path program 1 times [2021-10-29 05:22:05,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:05,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881031568] [2021-10-29 05:22:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:05,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:05,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:22:05,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881031568] [2021-10-29 05:22:05,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881031568] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:22:05,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419725309] [2021-10-29 05:22:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:05,926 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:05,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:05,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:22:05,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:22:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:06,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:22:06,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:06,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:06,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:06,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419725309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:06,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1257753967] [2021-10-29 05:22:06,325 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-29 05:22:06,325 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:22:06,330 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:22:06,336 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:22:06,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:22:06,386 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,394 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,397 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,398 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:22:06,403 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,404 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:22:06,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-29 05:22:06,454 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_11|], 10=[|v_#valid_14|]} [2021-10-29 05:22:06,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-10-29 05:22:06,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:22:06,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:22:06,493 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:06,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-10-29 05:22:06,566 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:22:06,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:22:06,578 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:06,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 140 [2021-10-29 05:22:06,597 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,597 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:155, output treesize:140 [2021-10-29 05:22:06,609 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.2 percent of original size [2021-10-29 05:22:06,611 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 05:22:06,614 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,616 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-10-29 05:22:06,623 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 174 [2021-10-29 05:22:06,629 INFO L446 ElimStorePlain]: Different costs {3=[|v_#length_12|], 10=[|v_#valid_15|]} [2021-10-29 05:22:06,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 24 [2021-10-29 05:22:06,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,649 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 05:22:06,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,652 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-10-29 05:22:06,655 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:06,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 33 [2021-10-29 05:22:06,703 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,708 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:22:06,714 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:22:06,716 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:06,738 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,758 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-10-29 05:22:06,760 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,760 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:170, output treesize:163 [2021-10-29 05:22:06,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,805 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,806 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,811 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:06,814 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-29 05:22:06,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,816 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,824 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,834 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 05:22:06,836 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:22:06,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:06,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,840 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:22:06,848 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size 184 [2021-10-29 05:22:06,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:06,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 112 [2021-10-29 05:22:06,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-29 05:22:06,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-29 05:22:06,941 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,942 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:06,962 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:06,976 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-10-29 05:22:06,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-10-29 05:22:06,983 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:06,983 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:185, output treesize:179 [2021-10-29 05:22:06,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,029 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,140 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:22:07,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:22:07,142 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,150 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,169 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,175 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:22:07,187 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-29 05:22:07,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 383 [2021-10-29 05:22:07,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,214 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 364 [2021-10-29 05:22:07,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 365 [2021-10-29 05:22:07,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,247 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,253 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:22:07,254 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:22:07,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,256 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-29 05:22:07,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:22:07,263 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,264 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 102 [2021-10-29 05:22:07,274 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,277 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:22:07,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-10-29 05:22:07,283 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,284 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,287 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,288 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 110 [2021-10-29 05:22:07,292 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-29 05:22:07,293 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 118 [2021-10-29 05:22:07,301 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 399 [2021-10-29 05:22:07,303 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 372 [2021-10-29 05:22:07,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 427 [2021-10-29 05:22:07,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 28 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 117 [2021-10-29 05:22:07,459 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:22:07,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,475 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-10-29 05:22:07,475 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:07,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:07,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 29 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 132 [2021-10-29 05:22:07,549 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:22:07,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 106 [2021-10-29 05:22:07,560 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:07,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,629 INFO L180 QuantifierPusher]: treesize reduction 82, result has 83.4 percent of original size [2021-10-29 05:22:07,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 423 [2021-10-29 05:22:07,640 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:22:07,640 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:501, output treesize:423 [2021-10-29 05:22:07,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,719 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,740 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,753 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.7 percent of original size [2021-10-29 05:22:07,774 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,775 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:22:07,776 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-29 05:22:07,777 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-10-29 05:22:07,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:22:07,787 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 16 treesize of output 12 [2021-10-29 05:22:07,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:22:07,788 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:22:07,789 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:07,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,792 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 68 [2021-10-29 05:22:07,796 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:07,796 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:66, output treesize:68 [2021-10-29 05:22:07,804 INFO L180 QuantifierPusher]: treesize reduction 31, result has 69.6 percent of original size [2021-10-29 05:22:07,808 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-10-29 05:22:07,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,874 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-29 05:22:07,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,924 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:07,944 INFO L180 QuantifierPusher]: treesize reduction 30, result has 69.1 percent of original size [2021-10-29 05:22:07,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-10-29 05:22:07,968 INFO L180 QuantifierPusher]: treesize reduction 38, result has 79.8 percent of original size [2021-10-29 05:22:07,974 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:07,983 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:07,985 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,016 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 50 [2021-10-29 05:22:08,023 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:08,024 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-10-29 05:22:08,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-10-29 05:22:08,055 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:08,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-29 05:22:08,065 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-10-29 05:22:08,096 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:22:08,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:22:08,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:22:08,098 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-10-29 05:22:08,118 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:22:08,122 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:22:08,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,138 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:22:08,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,141 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:22:08,141 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,142 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:22:08,142 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-10-29 05:22:08,157 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:22:08,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-29 05:22:08,160 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,160 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 180 [2021-10-29 05:22:08,177 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:22:08,177 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:455, output treesize:180 [2021-10-29 05:22:08,191 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 176 [2021-10-29 05:22:08,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,237 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,255 INFO L180 QuantifierPusher]: treesize reduction 30, result has 71.4 percent of original size [2021-10-29 05:22:08,257 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 71 [2021-10-29 05:22:08,266 INFO L180 QuantifierPusher]: treesize reduction 31, result has 83.0 percent of original size [2021-10-29 05:22:08,274 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:08,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-29 05:22:08,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-29 05:22:08,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:22:08,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-10-29 05:22:08,295 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:08,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,297 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:08,297 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-10-29 05:22:08,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-10-29 05:22:08,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:08,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:08,313 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,333 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,341 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-10-29 05:22:08,342 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:22:08,342 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:262, output treesize:240 [2021-10-29 05:22:08,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,379 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,392 INFO L180 QuantifierPusher]: treesize reduction 30, result has 80.0 percent of original size [2021-10-29 05:22:08,394 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:08,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:22:08,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 113 [2021-10-29 05:22:08,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:08,412 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 24 [2021-10-29 05:22:08,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:08,414 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,415 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-29 05:22:08,415 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,424 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 108 [2021-10-29 05:22:08,427 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,427 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:112, output treesize:108 [2021-10-29 05:22:08,444 INFO L180 QuantifierPusher]: treesize reduction 31, result has 80.6 percent of original size [2021-10-29 05:22:08,450 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:22:08,450 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:22:08,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-29 05:22:08,464 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 16 treesize of output 12 [2021-10-29 05:22:08,465 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,465 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:22:08,466 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:22:08,466 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,472 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,476 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:22:08,477 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:22:08,477 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:99, output treesize:95 [2021-10-29 05:22:08,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,484 INFO L185 QuantifierPusher]: treesize reduction 3, result has 96.7 percent of original size 88 [2021-10-29 05:22:08,487 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,504 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:08,565 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-10-29 05:22:08,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:22:08,642 INFO L180 QuantifierPusher]: treesize reduction 30, result has 74.1 percent of original size [2021-10-29 05:22:08,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:22:08,654 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:22:09,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:22:09,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:22:09,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-10-29 05:22:09,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253300315] [2021-10-29 05:22:09,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:22:09,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:22:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:22:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:22:09,838 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-29 05:22:09,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:09,891 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-10-29 05:22:09,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:09,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 14 [2021-10-29 05:22:09,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:09,892 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:22:09,893 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:22:09,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:22:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:22:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 05:22:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2021-10-29 05:22:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-10-29 05:22:09,903 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 14 [2021-10-29 05:22:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:09,903 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-10-29 05:22:09,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-29 05:22:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-10-29 05:22:09,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:22:09,904 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:09,905 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:09,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:10,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:10,119 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1719001655, now seen corresponding path program 2 times [2021-10-29 05:22:10,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:22:10,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703805255] [2021-10-29 05:22:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:10,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:22:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:22:10,171 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:22:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:22:10,246 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:22:10,246 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:22:10,255 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:10,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-29 05:22:10,261 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2021-10-29 05:22:10,263 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:22:10,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:22:10 BoogieIcfgContainer [2021-10-29 05:22:10,323 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:22:10,324 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:22:10,324 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:22:10,324 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:22:10,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:04" (3/4) ... [2021-10-29 05:22:10,327 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:22:10,328 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:22:10,328 INFO L168 Benchmark]: Toolchain (without parser) took 6605.15 ms. Allocated memory was 90.2 MB in the beginning and 134.2 MB in the end (delta: 44.0 MB). Free memory was 56.3 MB in the beginning and 68.4 MB in the end (delta: -12.1 MB). Peak memory consumption was 31.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:10,329 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 51.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:10,329 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.94 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.1 MB in the beginning and 83.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:10,330 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.71 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 81.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:10,331 INFO L168 Benchmark]: Boogie Preprocessor took 38.21 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 80.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:10,331 INFO L168 Benchmark]: RCFGBuilder took 697.00 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 63.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:10,332 INFO L168 Benchmark]: TraceAbstraction took 5474.81 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 62.9 MB in the beginning and 68.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:10,337 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 134.2 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:10,339 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 90.2 MB. Free memory is still 51.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.94 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 56.1 MB in the beginning and 83.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.71 ms. Allocated memory is still 109.1 MB. Free memory was 83.7 MB in the beginning and 81.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.21 ms. Allocated memory is still 109.1 MB. Free memory was 81.7 MB in the beginning and 80.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 697.00 ms. Allocated memory is still 109.1 MB. Free memory was 80.4 MB in the beginning and 63.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5474.81 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 62.9 MB in the beginning and 68.4 MB in the end (delta: -5.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.19 ms. Allocated memory is still 134.2 MB. Free memory is still 68.4 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 25. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ VAL [N=2] [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 VAL [N=2] [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ VAL [N=2] [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; VAL [N=2] [L50] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG 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 -> 1a4987addfe5f74a2ffcc1ac07d342e5a630d26b982b6fa887540d0e2c4f5965 [2021-10-29 05:22:13,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:22:13,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:22:13,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:22:13,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:22:13,694 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:22:13,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/array-crafted/bor5.i [2021-10-29 05:22:13,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/34b66100f/357da70a71d24010b99502da4e05953d/FLAGb0fc177e3 [2021-10-29 05:22:14,282 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:22:14,283 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/sv-benchmarks/c/array-crafted/bor5.i [2021-10-29 05:22:14,295 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/34b66100f/357da70a71d24010b99502da4e05953d/FLAGb0fc177e3 [2021-10-29 05:22:14,634 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/data/34b66100f/357da70a71d24010b99502da4e05953d [2021-10-29 05:22:14,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:22:14,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:22:14,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:14,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:22:14,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:22:14,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:14" (1/1) ... [2021-10-29 05:22:14,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a3e571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:14, skipping insertion in model container [2021-10-29 05:22:14,658 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:22:14" (1/1) ... [2021-10-29 05:22:14,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:22:14,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:22:14,898 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_e2db9824-ab2e-4a41-82f0-255462ca5e70/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-29 05:22:14,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:14,921 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:22:14,992 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_e2db9824-ab2e-4a41-82f0-255462ca5e70/sv-benchmarks/c/array-crafted/bor5.i[1364,1377] [2021-10-29 05:22:14,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:22:15,020 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:22:15,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15 WrapperNode [2021-10-29 05:22:15,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:22:15,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:15,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:22:15,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:22:15,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:22:15,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:22:15,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:22:15,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:22:15,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:22:15,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:22:15,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:22:15,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:22:15,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (1/1) ... [2021-10-29 05:22:15,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:22:15,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:15,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:22:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:22:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:22:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:22:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:22:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:22:15,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:22:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:22:15,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:22:15,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:22:15,732 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-29 05:22:15,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:15 BoogieIcfgContainer [2021-10-29 05:22:15,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:22:15,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:22:15,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:22:15,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:22:15,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:22:14" (1/3) ... [2021-10-29 05:22:15,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e169e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:15, skipping insertion in model container [2021-10-29 05:22:15,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:22:15" (2/3) ... [2021-10-29 05:22:15,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e169e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:22:15, skipping insertion in model container [2021-10-29 05:22:15,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:15" (3/3) ... [2021-10-29 05:22:15,743 INFO L111 eAbstractionObserver]: Analyzing ICFG bor5.i [2021-10-29 05:22:15,749 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:22:15,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:22:15,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:22:15,806 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 [2021-10-29 05:22:15,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:22:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 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) [2021-10-29 05:22:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:22:15,826 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:15,827 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:15,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:15,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:15,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1563818866, now seen corresponding path program 1 times [2021-10-29 05:22:15,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:15,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299118483] [2021-10-29 05:22:15,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:15,847 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:15,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:15,851 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:15,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:22:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:15,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:22:15,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:16,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:16,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:16,170 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:16,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299118483] [2021-10-29 05:22:16,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299118483] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:16,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:16,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:22:16,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445068531] [2021-10-29 05:22:16,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:22:16,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:22:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:22:16,196 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 28 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 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2021-10-29 05:22:16,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:16,214 INFO L93 Difference]: Finished difference Result 53 states and 72 transitions. [2021-10-29 05:22:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:22:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 [2021-10-29 05:22:16,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:16,227 INFO L225 Difference]: With dead ends: 53 [2021-10-29 05:22:16,227 INFO L226 Difference]: Without dead ends: 24 [2021-10-29 05:22:16,230 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:22:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-29 05:22:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-29 05:22:16,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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) [2021-10-29 05:22:16,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-10-29 05:22:16,267 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2021-10-29 05:22:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:16,267 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-10-29 05:22:16,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2021-10-29 05:22:16,268 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-10-29 05:22:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:22:16,270 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:16,270 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:16,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:16,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:16,482 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2019195128, now seen corresponding path program 1 times [2021-10-29 05:22:16,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:16,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449787403] [2021-10-29 05:22:16,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:16,485 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:16,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:16,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:16,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:22:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:16,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:22:16,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:16,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:16,793 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:16,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449787403] [2021-10-29 05:22:16,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449787403] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:16,794 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:16,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:22:16,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750842378] [2021-10-29 05:22:16,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:22:16,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:16,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:22:16,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:16,798 INFO L87 Difference]: Start difference. First operand 24 states and 28 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) [2021-10-29 05:22:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:16,891 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2021-10-29 05:22:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:22:16,893 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 [2021-10-29 05:22:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:16,894 INFO L225 Difference]: With dead ends: 46 [2021-10-29 05:22:16,894 INFO L226 Difference]: Without dead ends: 27 [2021-10-29 05:22:16,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:22:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-29 05:22:16,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-29 05:22:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:22:16,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-29 05:22:16,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2021-10-29 05:22:16,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:16,912 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-29 05:22:16,912 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) [2021-10-29 05:22:16,913 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-29 05:22:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:22:16,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:16,915 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:16,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-29 05:22:17,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:17,129 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:17,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:17,135 INFO L85 PathProgramCache]: Analyzing trace with hash -524663612, now seen corresponding path program 1 times [2021-10-29 05:22:17,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:17,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920277285] [2021-10-29 05:22:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:17,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:17,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:17,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:17,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:22:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:17,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:22:17,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:17,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:17,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:17,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920277285] [2021-10-29 05:22:17,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920277285] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:17,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [860106614] [2021-10-29 05:22:17,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:17,705 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:22:17,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:22:17,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:22:17,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-29 05:22:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:17,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:22:17,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:17,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:17,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:18,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [860106614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:18,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451982742] [2021-10-29 05:22:18,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:18,118 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:18,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:22:18,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-29 05:22:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:18,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:22:18,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:18,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:18,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451982742] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:22:18,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-10-29 05:22:18,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7, 7, 7, 7] total 13 [2021-10-29 05:22:18,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988591436] [2021-10-29 05:22:18,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:22:18,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:18,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:22:18,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:22:18,422 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-29 05:22:18,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:18,620 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-10-29 05:22:18,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:22:18,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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 [2021-10-29 05:22:18,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:18,622 INFO L225 Difference]: With dead ends: 49 [2021-10-29 05:22:18,623 INFO L226 Difference]: Without dead ends: 33 [2021-10-29 05:22:18,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:22:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-29 05:22:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2021-10-29 05:22:18,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 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) [2021-10-29 05:22:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-10-29 05:22:18,629 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-10-29 05:22:18,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:18,629 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-10-29 05:22:18,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 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) [2021-10-29 05:22:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-10-29 05:22:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:22:18,632 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:18,632 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:18,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:18,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:19,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:19,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:19,235 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash -187943454, now seen corresponding path program 1 times [2021-10-29 05:22:19,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:19,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850846820] [2021-10-29 05:22:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:19,237 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:19,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:19,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:22:19,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:19,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:22:19,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:22:19,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:22:20,038 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:20,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850846820] [2021-10-29 05:22:20,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850846820] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:20,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [594674495] [2021-10-29 05:22:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:20,039 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:22:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:22:20,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:22:20,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-10-29 05:22:20,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:20,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:22:20,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:22:20,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:20,649 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-29 05:22:20,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [594674495] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:20,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396978058] [2021-10-29 05:22:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:20,650 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:20,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:20,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:22:20,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-29 05:22:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:20,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-29 05:22:20,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:21,063 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 05:22:21,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:21,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-29 05:22:21,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396978058] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:22:21,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-29 05:22:21,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 6] total 17 [2021-10-29 05:22:21,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215237907] [2021-10-29 05:22:21,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-29 05:22:21,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:22:21,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-29 05:22:21,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-10-29 05:22:21,317 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 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) [2021-10-29 05:22:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:22:22,029 INFO L93 Difference]: Finished difference Result 107 states and 126 transitions. [2021-10-29 05:22:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-29 05:22:22,030 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 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 28 [2021-10-29 05:22:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:22:22,031 INFO L225 Difference]: With dead ends: 107 [2021-10-29 05:22:22,031 INFO L226 Difference]: Without dead ends: 87 [2021-10-29 05:22:22,032 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=468, Unknown=0, NotChecked=0, Total=702 [2021-10-29 05:22:22,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-29 05:22:22,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 55. [2021-10-29 05:22:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 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) [2021-10-29 05:22:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-10-29 05:22:22,045 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 28 [2021-10-29 05:22:22,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:22:22,046 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-10-29 05:22:22,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 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) [2021-10-29 05:22:22,046 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-10-29 05:22:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 05:22:22,048 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:22:22,048 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:22:22,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:22,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:22,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:22,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt [2021-10-29 05:22:22,665 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:22:22,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:22:22,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1519457344, now seen corresponding path program 1 times [2021-10-29 05:22:22,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:22:22,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671461806] [2021-10-29 05:22:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:22,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:22:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:22:22,668 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:22:22,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:22:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:23,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-29 05:22:23,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:23,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:23,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-29 05:22:23,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:23,922 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:23,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-29 05:22:24,133 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-29 05:22:24,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-29 05:22:24,292 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-29 05:22:24,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-29 05:22:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:24,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:27,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-29 05:22:27,319 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 05:22:27,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 156 [2021-10-29 05:22:27,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-29 05:22:27,376 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 05:22:27,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-29 05:22:28,122 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:22:28,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671461806] [2021-10-29 05:22:28,123 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-29 05:22:28,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [812778127] [2021-10-29 05:22:28,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:28,124 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-29 05:22:28,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 [2021-10-29 05:22:28,125 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-29 05:22:28,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-29 05:22:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:28,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-29 05:22:28,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:28,688 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 15 treesize of output 11 [2021-10-29 05:22:28,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:28,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-29 05:22:29,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:29,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:29,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-29 05:22:29,301 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-29 05:22:29,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-29 05:22:29,367 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-29 05:22:29,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-29 05:22:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:22:29,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:34,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 223 [2021-10-29 05:22:35,014 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 05:22:35,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 714 treesize of output 588 [2021-10-29 05:22:37,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-29 05:22:37,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848641610] [2021-10-29 05:22:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:22:37,109 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:22:37,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:22:37,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:22:37,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-29 05:22:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:22:38,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-29 05:22:38,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:22:38,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:38,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-10-29 05:22:39,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:22:39,583 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:22:39,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 36 [2021-10-29 05:22:39,745 INFO L354 Elim1Store]: treesize reduction 56, result has 11.1 percent of original size [2021-10-29 05:22:39,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 45 [2021-10-29 05:22:39,794 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-10-29 05:22:39,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 34 [2021-10-29 05:22:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-29 05:22:40,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:22:42,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 111 [2021-10-29 05:22:42,361 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 05:22:42,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 183 [2021-10-29 05:22:42,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-10-29 05:22:42,402 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-10-29 05:22:42,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 1 [2021-10-29 05:22:42,680 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2021-10-29 05:22:42,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:22:42,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-29 05:22:42,681 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-10-29 05:22:42,681 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-29 05:22:42,691 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:22:42,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:42,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:43,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:22:43,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2db9824-ab2e-4a41-82f0-255462ca5e70/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:22:43,318 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-10-29 05:22:43,319 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:22:43,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:22:43 BoogieIcfgContainer [2021-10-29 05:22:43,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:22:43,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:22:43,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:22:43,336 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:22:43,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:22:15" (3/4) ... [2021-10-29 05:22:43,352 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:22:43,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:22:43,353 INFO L168 Benchmark]: Toolchain (without parser) took 28714.49 ms. Allocated memory was 50.3 MB in the beginning and 79.7 MB in the end (delta: 29.4 MB). Free memory was 26.5 MB in the beginning and 40.8 MB in the end (delta: -14.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:43,353 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:43,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.99 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 26.2 MB in the beginning and 46.9 MB in the end (delta: -20.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:43,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.53 ms. Allocated memory is still 65.0 MB. Free memory was 46.9 MB in the beginning and 45.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:22:43,355 INFO L168 Benchmark]: Boogie Preprocessor took 51.98 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 43.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:43,355 INFO L168 Benchmark]: RCFGBuilder took 574.96 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 43.7 MB in the end (delta: -185.9 kB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:43,356 INFO L168 Benchmark]: TraceAbstraction took 27599.20 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.2 MB in the beginning and 41.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:43,356 INFO L168 Benchmark]: Witness Printer took 16.08 ms. Allocated memory is still 79.7 MB. Free memory was 41.5 MB in the beginning and 40.8 MB in the end (delta: 688.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:22:43,359 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 50.3 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 369.99 ms. Allocated memory was 50.3 MB in the beginning and 65.0 MB in the end (delta: 14.7 MB). Free memory was 26.2 MB in the beginning and 46.9 MB in the end (delta: -20.6 MB). Peak memory consumption was 5.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.53 ms. Allocated memory is still 65.0 MB. Free memory was 46.9 MB in the beginning and 45.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.98 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 43.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 574.96 ms. Allocated memory is still 65.0 MB. Free memory was 43.5 MB in the beginning and 43.7 MB in the end (delta: -185.9 kB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27599.20 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.2 MB in the beginning and 41.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Witness Printer took 16.08 ms. Allocated memory is still 79.7 MB. Free memory was 41.5 MB in the beginning and 40.8 MB in the end (delta: 688.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 57]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] int temp; [L36] int ret; [L37] int ret2; [L38] int ret5; [L40] int i = 0; [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND TRUE i < N [L42] x[i] = __VERIFIER_nondet_int() [L40] i++ [L40] COND FALSE !(i < N) [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L45] ret = bor(x) [L47] EXPR x[0] [L47] temp=x[0] [L47] EXPR x[1] [L47] x[0] = x[1] [L47] x[1] = temp [L21] int i; [L22] long long res; [L23] EXPR x[0] [L23] res = x[0] [L24] i = 1 [L24] COND TRUE i < N [L25] EXPR x[i] [L25] res = res | x[i] [L24] i++ [L24] COND FALSE !(i < N) [L27] return res; [L48] ret2 = bor(x) [L49] EXPR x[0] [L49] temp=x[0] [L50] int i =0 ; [L50] COND TRUE i