./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs --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 849fed01ee44329cef2616b32b837b2abe910dbd ............................................................................................................................................................................................................................................................................................................................................................................................................. 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_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs --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 849fed01ee44329cef2616b32b837b2abe910dbd ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:34:31,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:34:31,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:34:31,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:34:31,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:34:31,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:34:31,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:34:31,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:34:31,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:34:31,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:34:31,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:34:31,069 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:34:31,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:34:31,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:34:31,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:34:31,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:34:31,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:34:31,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:34:31,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:34:31,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:34:31,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:34:31,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:34:31,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:34:31,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:34:31,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:34:31,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:34:31,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:34:31,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:34:31,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:34:31,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:34:31,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:34:31,114 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:34:31,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:34:31,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:34:31,119 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:34:31,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:34:31,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:34:31,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:34:31,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:34:31,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:34:31,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:34:31,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:34:31,178 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:34:31,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:34:31,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:34:31,186 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:34:31,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:34:31,187 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:34:31,187 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:34:31,187 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:34:31,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:34:31,194 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:34:31,195 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:34:31,196 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:34:31,196 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:34:31,196 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:34:31,196 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:34:31,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:34:31,197 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:34:31,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:34:31,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:34:31,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:34:31,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:34:31,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:34:31,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:34:31,199 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:34:31,199 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:34:31,199 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:34:31,200 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:34:31,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:34:31,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:34:31,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:34:31,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:31,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:34:31,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:34:31,201 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:34:31,202 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:34:31,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:34:31,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:34:31,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:34:31,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:34:31,203 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_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 849fed01ee44329cef2616b32b837b2abe910dbd [2021-10-16 02:34:31,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:34:31,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:34:31,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:34:31,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:34:31,552 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:34:31,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-10-16 02:34:31,633 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/bfd714ade/8a4d79d34e8f498c8f8b59f6f892859b/FLAG2ebae3c4a [2021-10-16 02:34:32,104 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:32,104 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-10-16 02:34:32,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/bfd714ade/8a4d79d34e8f498c8f8b59f6f892859b/FLAG2ebae3c4a [2021-10-16 02:34:32,483 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/bfd714ade/8a4d79d34e8f498c8f8b59f6f892859b [2021-10-16 02:34:32,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:32,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:32,489 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:32,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:32,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:32,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c696ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32, skipping insertion in model container [2021-10-16 02:34:32,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:32,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:32,791 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_90584ea3-93fd-40d3-8203-caf3950e1798/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-10-16 02:34:32,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:32,815 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:34:32,830 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_90584ea3-93fd-40d3-8203-caf3950e1798/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-10-16 02:34:32,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:32,853 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:34:32,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32 WrapperNode [2021-10-16 02:34:32,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:32,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:32,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:34:32,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:34:32,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:32,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:34:32,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:34:32,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:34:32,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:34:32,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:34:32,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:34:32,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:34:32,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (1/1) ... [2021-10-16 02:34:32,944 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:32,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:32,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:34:32,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:34:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:34:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:34:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:34:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:34:33,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 02:34:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:34:33,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:34:33,480 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 02:34:33,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:33 BoogieIcfgContainer [2021-10-16 02:34:33,483 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:34:33,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:34:33,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:34:33,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:34:33,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:34:32" (1/3) ... [2021-10-16 02:34:33,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c9f56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:33, skipping insertion in model container [2021-10-16 02:34:33,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:32" (2/3) ... [2021-10-16 02:34:33,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44c9f56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:33, skipping insertion in model container [2021-10-16 02:34:33,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:33" (3/3) ... [2021-10-16 02:34:33,499 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2021-10-16 02:34:33,505 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:34:33,505 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:34:33,551 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:34:33,558 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, mConcurrency=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 [2021-10-16 02:34:33,559 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:34:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.6363636363636365) 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) [2021-10-16 02:34:33,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:34:33,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:33,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:34:33,583 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:33,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:33,590 INFO L82 PathProgramCache]: Analyzing trace with hash 3539268, now seen corresponding path program 1 times [2021-10-16 02:34:33,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:33,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895574628] [2021-10-16 02:34:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:33,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:33,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:33,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895574628] [2021-10-16 02:34:33,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895574628] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:33,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:33,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-16 02:34:33,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739695803] [2021-10-16 02:34:33,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 02:34:33,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:33,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 02:34:33,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-16 02:34:33,988 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.6363636363636365) 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 02:34:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:34,102 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2021-10-16 02:34:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 02:34:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-10-16 02:34:34,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:34,116 INFO L225 Difference]: With dead ends: 38 [2021-10-16 02:34:34,116 INFO L226 Difference]: Without dead ends: 21 [2021-10-16 02:34:34,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-16 02:34:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-16 02:34:34,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14. [2021-10-16 02:34:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:34,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-16 02:34:34,164 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 4 [2021-10-16 02:34:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:34,165 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-16 02:34:34,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 02:34:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-16 02:34:34,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:34:34,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:34,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:34:34,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:34:34,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash -831200400, now seen corresponding path program 1 times [2021-10-16 02:34:34,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:34,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81561392] [2021-10-16 02:34:34,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:34,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:34,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:34,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81561392] [2021-10-16 02:34:34,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81561392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:34,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:34,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 02:34:34,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912457321] [2021-10-16 02:34:34,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:34,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 02:34:34,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:34,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:34,242 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:34,253 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-10-16 02:34:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:34,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-16 02:34:34,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:34,255 INFO L225 Difference]: With dead ends: 21 [2021-10-16 02:34:34,255 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:34:34,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:34:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-16 02:34:34,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 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) [2021-10-16 02:34:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-16 02:34:34,262 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2021-10-16 02:34:34,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:34,262 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-16 02:34:34,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:34,263 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-16 02:34:34,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-16 02:34:34,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:34,264 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-16 02:34:34,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 02:34:34,264 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:34,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1929390626, now seen corresponding path program 1 times [2021-10-16 02:34:34,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:34:34,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425393959] [2021-10-16 02:34:34,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:34,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:34:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:34,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:34,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 02:34:34,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425393959] [2021-10-16 02:34:34,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425393959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-16 02:34:34,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194053258] [2021-10-16 02:34:34,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:34,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:34,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:34,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:34,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-16 02:34:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:34,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:34:34,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:35,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:35,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:35,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194053258] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:35,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [47669912] [2021-10-16 02:34:35,622 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-16 02:34:35,622 INFO L166 IcfgInterpreter]: Building call graph [2021-10-16 02:34:35,628 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-16 02:34:35,635 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-16 02:34:35,636 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-16 02:34:35,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,683 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:34:35,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-16 02:34:35,686 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-16 02:34:35,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,689 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-16 02:34:35,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-16 02:34:35,744 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-16 02:34:35,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:34:35,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-16 02:34:35,753 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-16 02:34:35,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:35,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:35,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-16 02:34:35,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-16 02:34:35,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:34:35,780 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-16 02:34:35,781 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-16 02:34:35,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:34:35,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-16 02:34:35,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-10-16 02:34:35,857 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-16 02:34:35,858 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:280, output treesize:142 [2021-10-16 02:34:35,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:36,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:36,088 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_35| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-16 02:34:36,091 INFO L168 Benchmark]: Toolchain (without parser) took 3603.97 ms. Allocated memory is still 121.6 MB. Free memory was 84.0 MB in the beginning and 84.1 MB in the end (delta: -73.7 kB). Peak memory consumption was 780.0 kB. Max. memory is 16.1 GB. [2021-10-16 02:34:36,091 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 121.6 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:36,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.36 ms. Allocated memory is still 121.6 MB. Free memory was 83.8 MB in the beginning and 97.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:36,093 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.35 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 95.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:36,093 INFO L168 Benchmark]: Boogie Preprocessor took 30.10 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 94.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:36,094 INFO L168 Benchmark]: RCFGBuilder took 553.31 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 79.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 02:34:36,094 INFO L168 Benchmark]: TraceAbstraction took 2605.05 ms. Allocated memory is still 121.6 MB. Free memory was 79.1 MB in the beginning and 84.1 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:34:36,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 121.6 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 366.36 ms. Allocated memory is still 121.6 MB. Free memory was 83.8 MB in the beginning and 97.4 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.35 ms. Allocated memory is still 121.6 MB. Free memory was 97.4 MB in the beginning and 95.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.10 ms. Allocated memory is still 121.6 MB. Free memory was 95.9 MB in the beginning and 94.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 553.31 ms. Allocated memory is still 121.6 MB. Free memory was 94.8 MB in the beginning and 79.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2605.05 ms. Allocated memory is still 121.6 MB. Free memory was 79.1 MB in the beginning and 84.1 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_35| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_35|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-16 02:34:36,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:34:38,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:34:38,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:34:38,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:34:38,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:34:38,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:34:38,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:34:38,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:34:38,917 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:34:38,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:34:38,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:34:38,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:34:38,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:34:38,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:34:38,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:34:38,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:34:38,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:34:38,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:34:38,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:34:38,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:34:38,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:34:38,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:34:38,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:34:38,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:34:38,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:34:38,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:34:38,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:34:38,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:34:38,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:34:38,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:34:38,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:34:38,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:34:38,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:34:38,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:34:38,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:34:38,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:34:38,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:34:38,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:34:38,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:34:38,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:34:38,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:34:39,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:34:39,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:34:39,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:34:39,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:34:39,054 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:34:39,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:34:39,054 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:34:39,055 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:34:39,055 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:34:39,055 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:34:39,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:34:39,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:34:39,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:34:39,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:34:39,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:34:39,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:34:39,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:34:39,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:34:39,060 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:34:39,060 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:34:39,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:34:39,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:34:39,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:34:39,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:34:39,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:34:39,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:34:39,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:34:39,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:39,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:34:39,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:34:39,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:34:39,063 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:34:39,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:39,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:34:39,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:34:39,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:34:39,065 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 849fed01ee44329cef2616b32b837b2abe910dbd [2021-10-16 02:34:39,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:34:39,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:34:39,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:34:39,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:34:39,556 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:34:39,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-10-16 02:34:39,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/70d8a2fe3/6cb1c6d4fc5348249a79be97d0a694d8/FLAG8f91a443f [2021-10-16 02:34:40,300 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:34:40,301 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i [2021-10-16 02:34:40,309 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/70d8a2fe3/6cb1c6d4fc5348249a79be97d0a694d8/FLAG8f91a443f [2021-10-16 02:34:40,641 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/data/70d8a2fe3/6cb1c6d4fc5348249a79be97d0a694d8 [2021-10-16 02:34:40,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:34:40,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:34:40,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:40,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:34:40,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:34:40,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@852e720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40, skipping insertion in model container [2021-10-16 02:34:40,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:34:40,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:34:40,853 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_90584ea3-93fd-40d3-8203-caf3950e1798/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-10-16 02:34:40,877 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:40,891 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:34:40,919 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_90584ea3-93fd-40d3-8203-caf3950e1798/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i[919,932] [2021-10-16 02:34:40,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:34:40,944 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:34:40,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40 WrapperNode [2021-10-16 02:34:40,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:34:40,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:40,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:34:40,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:34:40,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:34:40,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:34:40,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:34:40,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:34:40,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:40,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:41,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:41,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:41,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:41,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:34:41,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:34:41,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:34:41,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:34:41,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (1/1) ... [2021-10-16 02:34:41,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:34:41,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:41,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:34:41,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:34:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:34:41,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:34:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 02:34:41,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:34:41,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:34:41,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 02:34:41,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:34:41,479 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-16 02:34:41,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:41 BoogieIcfgContainer [2021-10-16 02:34:41,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:34:41,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:34:41,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:34:41,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:34:41,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:34:40" (1/3) ... [2021-10-16 02:34:41,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ab443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:41, skipping insertion in model container [2021-10-16 02:34:41,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:34:40" (2/3) ... [2021-10-16 02:34:41,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@403ab443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:34:41, skipping insertion in model container [2021-10-16 02:34:41,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:41" (3/3) ... [2021-10-16 02:34:41,489 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i [2021-10-16 02:34:41,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:34:41,495 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-16 02:34:41,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:34:41,570 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, mConcurrency=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 [2021-10-16 02:34:41,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-16 02:34:41,618 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 21 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) [2021-10-16 02:34:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:34:41,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:41,623 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:41,624 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:41,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:41,641 INFO L82 PathProgramCache]: Analyzing trace with hash 119391765, now seen corresponding path program 1 times [2021-10-16 02:34:41,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:41,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1156386375] [2021-10-16 02:34:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:41,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:41,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:41,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:41,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:34:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:41,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 02:34:41,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:41,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:41,892 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:41,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1156386375] [2021-10-16 02:34:41,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1156386375] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:41,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:41,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 02:34:41,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920573378] [2021-10-16 02:34:41,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 02:34:41,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:41,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 02:34:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:34:41,926 INFO L87 Difference]: Start difference. First operand has 22 states, 19 states have (on average 1.631578947368421) internal successors, (31), 21 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:41,954 INFO L93 Difference]: Finished difference Result 41 states and 58 transitions. [2021-10-16 02:34:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 02:34:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 02:34:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:41,966 INFO L225 Difference]: With dead ends: 41 [2021-10-16 02:34:41,967 INFO L226 Difference]: Without dead ends: 18 [2021-10-16 02:34:41,970 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 02:34:41,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-16 02:34:42,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-16 02:34:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 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) [2021-10-16 02:34:42,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-16 02:34:42,008 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-10-16 02:34:42,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:42,008 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-16 02:34:42,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:42,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-16 02:34:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:34:42,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:42,010 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:42,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:42,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:42,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:42,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:42,225 INFO L82 PathProgramCache]: Analyzing trace with hash 176709649, now seen corresponding path program 1 times [2021-10-16 02:34:42,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:42,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178251473] [2021-10-16 02:34:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:42,226 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:42,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:42,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:42,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:34:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:42,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 02:34:42,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:42,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:42,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:42,901 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:42,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178251473] [2021-10-16 02:34:42,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178251473] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:42,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:42,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-16 02:34:42,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898302511] [2021-10-16 02:34:42,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-16 02:34:42,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:42,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-16 02:34:42,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-16 02:34:42,913 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-10-16 02:34:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:43,278 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-16 02:34:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-16 02:34:43,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 8 [2021-10-16 02:34:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:43,281 INFO L225 Difference]: With dead ends: 34 [2021-10-16 02:34:43,281 INFO L226 Difference]: Without dead ends: 32 [2021-10-16 02:34:43,282 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 302.6ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-16 02:34:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-16 02:34:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20. [2021-10-16 02:34:43,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 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) [2021-10-16 02:34:43,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-10-16 02:34:43,296 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2021-10-16 02:34:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:43,297 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-10-16 02:34:43,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-10-16 02:34:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-10-16 02:34:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:34:43,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:43,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:43,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:43,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:43,499 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:43,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1981911752, now seen corresponding path program 1 times [2021-10-16 02:34:43,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:43,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620599396] [2021-10-16 02:34:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:43,501 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:43,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:43,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:43,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:34:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:43,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:34:43,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:43,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:43,662 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:43,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620599396] [2021-10-16 02:34:43,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620599396] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:43,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:43,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:34:43,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715955102] [2021-10-16 02:34:43,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:34:43,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:43,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:34:43,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:43,666 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 02:34:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:43,679 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-10-16 02:34:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:34:43,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-10-16 02:34:43,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:43,682 INFO L225 Difference]: With dead ends: 29 [2021-10-16 02:34:43,682 INFO L226 Difference]: Without dead ends: 23 [2021-10-16 02:34:43,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:34:43,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-16 02:34:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-16 02:34:43,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:43,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-10-16 02:34:43,695 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2021-10-16 02:34:43,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:43,695 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-10-16 02:34:43,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 02:34:43,696 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-10-16 02:34:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-16 02:34:43,696 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:43,697 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:43,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:43,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:43,911 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:43,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1303994310, now seen corresponding path program 1 times [2021-10-16 02:34:43,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:43,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994785636] [2021-10-16 02:34:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:43,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:43,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:43,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:34:43,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:44,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-16 02:34:44,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:44,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:44,922 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:44,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994785636] [2021-10-16 02:34:44,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994785636] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:44,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2092043979] [2021-10-16 02:34:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:44,924 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-16 02:34:44,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/cvc4 [2021-10-16 02:34:44,926 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-16 02:34:44,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-16 02:34:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:45,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-16 02:34:45,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:45,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:45,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2092043979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:45,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108786340] [2021-10-16 02:34:45,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:45,541 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-16 02:34:45,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:34:45,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-16 02:34:45,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-16 02:34:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:45,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-16 02:34:45,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:45,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:45,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:46,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:46,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108786340] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-16 02:34:46,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-16 02:34:46,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7, 7, 9, 7] total 23 [2021-10-16 02:34:46,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397609274] [2021-10-16 02:34:46,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-16 02:34:46,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-16 02:34:46,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-16 02:34:46,077 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) [2021-10-16 02:34:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:34:47,001 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-16 02:34:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-16 02:34:47,003 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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 [2021-10-16 02:34:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:34:47,003 INFO L225 Difference]: With dead ends: 36 [2021-10-16 02:34:47,004 INFO L226 Difference]: Without dead ends: 26 [2021-10-16 02:34:47,005 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 1181.8ms TimeCoverageRelationStatistics Valid=335, Invalid=787, Unknown=0, NotChecked=0, Total=1122 [2021-10-16 02:34:47,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-16 02:34:47,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16. [2021-10-16 02:34:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:34:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-16 02:34:47,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-10-16 02:34:47,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:34:47,010 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-16 02:34:47,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 states have internal predecessors, (44), 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) [2021-10-16 02:34:47,010 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-16 02:34:47,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-16 02:34:47,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:34:47,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:34:47,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:47,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:47,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 02:34:47,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:34:47,624 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 02:34:47,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:34:47,624 INFO L82 PathProgramCache]: Analyzing trace with hash -993111123, now seen corresponding path program 1 times [2021-10-16 02:34:47,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:34:47,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113102326] [2021-10-16 02:34:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:34:47,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:34:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:34:47,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:34:47,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 02:34:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:34:47,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-16 02:34:47,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:34:48,799 INFO L354 Elim1Store]: treesize reduction 78, result has 8.2 percent of original size [2021-10-16 02:34:48,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 79 treesize of output 45 [2021-10-16 02:34:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:48,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:34:59,434 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-10-16 02:34:59,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 26 [2021-10-16 02:34:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:34:59,738 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:34:59,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113102326] [2021-10-16 02:34:59,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113102326] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:34:59,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:34:59,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 7] imperfect sequences [] total 17 [2021-10-16 02:34:59,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264564908] [2021-10-16 02:34:59,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-16 02:34:59,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:34:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-16 02:34:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=213, Unknown=5, NotChecked=0, Total=272 [2021-10-16 02:34:59,741 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:35:08,219 WARN L207 SmtUtils]: Spent 8.10 s on a formula simplification that was a NOOP. DAG size: 42 [2021-10-16 02:35:28,403 WARN L207 SmtUtils]: Spent 20.15 s on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-10-16 02:35:40,633 WARN L207 SmtUtils]: Spent 12.15 s on a formula simplification. DAG size of input: 48 DAG size of output: 37 [2021-10-16 02:35:56,854 WARN L207 SmtUtils]: Spent 16.16 s on a formula simplification. DAG size of input: 50 DAG size of output: 39 [2021-10-16 02:36:21,562 WARN L207 SmtUtils]: Spent 16.24 s on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-10-16 02:36:41,824 WARN L207 SmtUtils]: Spent 20.21 s on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-10-16 02:36:41,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:36:41,851 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-16 02:36:41,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-16 02:36:41,853 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-16 02:36:41,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:36:41,853 INFO L225 Difference]: With dead ends: 20 [2021-10-16 02:36:41,854 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:36:41,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 110615.4ms TimeCoverageRelationStatistics Valid=200, Invalid=548, Unknown=8, NotChecked=0, Total=756 [2021-10-16 02:36:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:36:41,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:36:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:36:41,855 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-16 02:36:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:36:41,855 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:36:41,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:36:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:36:41,856 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:36:41,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:41,859 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:36:41,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 02:36:42,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:36:42,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:36:42,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:42,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:42,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:42,210 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-16 02:36:58,620 WARN L207 SmtUtils]: Spent 16.20 s on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-10-16 02:37:04,716 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 43 [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 59) no Hoare annotation was computed. [2021-10-16 02:37:04,718 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 22) no Hoare annotation was computed. [2021-10-16 02:37:04,719 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2021-10-16 02:37:04,719 INFO L853 garLoopResultBuilder]: At program point L45-1(lines 20 51) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32))) (.cse1 (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)))) (or (and .cse0 (bvult ULTIMATE.start_main_~index1~0 (_ bv100000 32)) .cse1 (= ULTIMATE.start_main_~loop_entered~0 (_ bv0 32)) (bvult ULTIMATE.start_main_~index2~0 (_ bv100000 32))) (let ((.cse2 (bvadd ULTIMATE.start_main_~index2~0 (_ bv1 32))) (.cse5 (bvmul ULTIMATE.start_main_~index1~0 (_ bv4 32))) (.cse3 (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|)) (.cse4 (bvmul ULTIMATE.start_main_~index2~0 (_ bv4 32)))) (and .cse0 (bvult .cse2 (_ bv100000 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~index1~0) .cse2) .cse1 (or (= (select .cse3 (bvadd .cse4 |ULTIMATE.start_main_~#array~0.offset|)) (select .cse3 (bvadd |ULTIMATE.start_main_~#array~0.offset| .cse5))) (not (bvult ULTIMATE.start_main_~index2~0 ULTIMATE.start_main_~index1~0))) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= (select .cse3 (bvadd (_ bv4294967292 32) |ULTIMATE.start_main_~#array~0.offset| .cse5)) (select .cse3 (bvadd (_ bv4 32) .cse4 |ULTIMATE.start_main_~#array~0.offset|))))))) [2021-10-16 02:37:04,719 INFO L857 garLoopResultBuilder]: For program point L45-2(lines 34 61) no Hoare annotation was computed. [2021-10-16 02:37:04,719 INFO L857 garLoopResultBuilder]: For program point L33(lines 33 61) no Hoare annotation was computed. [2021-10-16 02:37:04,719 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:37:04,719 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 27) no Hoare annotation was computed. [2021-10-16 02:37:04,719 INFO L853 garLoopResultBuilder]: At program point L25-2(lines 23 29) the Hoare annotation is: (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (bvult ULTIMATE.start_main_~index2~0 (_ bv100000 32)) (bvult ULTIMATE.start_main_~index1~0 ULTIMATE.start_main_~index2~0)) [2021-10-16 02:37:04,720 INFO L857 garLoopResultBuilder]: For program point L25-3(lines 25 27) no Hoare annotation was computed. [2021-10-16 02:37:04,720 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-16 02:37:04,720 INFO L853 garLoopResultBuilder]: At program point L25-5(lines 23 29) the Hoare annotation is: (let ((.cse0 (bvadd ULTIMATE.start_main_~index2~0 (_ bv1 32)))) (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvult .cse0 (_ bv100000 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~index1~0) .cse0))) [2021-10-16 02:37:04,720 INFO L853 garLoopResultBuilder]: At program point L54-2(lines 54 58) the Hoare annotation is: (or (let ((.cse0 (bvadd ULTIMATE.start_main_~index2~0 (_ bv1 32))) (.cse3 (bvmul ULTIMATE.start_main_~index1~0 (_ bv4 32))) (.cse1 (select |#memory_int| |ULTIMATE.start_main_~#array~0.base|)) (.cse2 (bvmul ULTIMATE.start_main_~index2~0 (_ bv4 32)))) (and (= ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) (bvult .cse0 (_ bv100000 32)) (bvult (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~index1~0) .cse0) (= |ULTIMATE.start_main_~#array~0.offset| (_ bv0 32)) (or (= (select .cse1 (bvadd .cse2 |ULTIMATE.start_main_~#array~0.offset|)) (select .cse1 (bvadd |ULTIMATE.start_main_~#array~0.offset| .cse3))) (not (bvult ULTIMATE.start_main_~index2~0 ULTIMATE.start_main_~index1~0))) (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) (= (select .cse1 (bvadd (_ bv4294967292 32) |ULTIMATE.start_main_~#array~0.offset| .cse3)) (select .cse1 (bvadd (_ bv4 32) .cse2 |ULTIMATE.start_main_~#array~0.offset|))))) (and (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (bvult ULTIMATE.start_main_~index2~0 (_ bv100000 32)) (bvult ULTIMATE.start_main_~index1~0 ULTIMATE.start_main_~index2~0))) [2021-10-16 02:37:04,720 INFO L857 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2021-10-16 02:37:04,720 INFO L857 garLoopResultBuilder]: For program point L21-4(line 21) no Hoare annotation was computed. [2021-10-16 02:37:04,720 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-10-16 02:37:04,720 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-10-16 02:37:04,725 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:37:04,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:37:04 BoogieIcfgContainer [2021-10-16 02:37:04,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:37:04,751 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:37:04,751 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:37:04,751 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:37:04,752 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:34:41" (3/4) ... [2021-10-16 02:37:04,755 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:37:04,767 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-16 02:37:04,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:37:04,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:37:04,768 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:37:04,815 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:37:04,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:37:04,817 INFO L168 Benchmark]: Toolchain (without parser) took 144172.01 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 33.8 MB in the beginning and 59.5 MB in the end (delta: -25.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,817 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:37:04,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.81 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 38.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 37.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,819 INFO L168 Benchmark]: Boogie Preprocessor took 29.15 ms. Allocated memory is still 56.6 MB. Free memory was 37.1 MB in the beginning and 35.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,819 INFO L168 Benchmark]: RCFGBuilder took 464.56 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 38.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,820 INFO L168 Benchmark]: TraceAbstraction took 143267.79 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 38.1 MB in the beginning and 62.3 MB in the end (delta: -24.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,821 INFO L168 Benchmark]: Witness Printer took 64.80 ms. Allocated memory is still 88.1 MB. Free memory was 62.3 MB in the beginning and 59.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:37:04,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 56.6 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 42.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.81 ms. Allocated memory is still 56.6 MB. Free memory was 33.6 MB in the beginning and 38.8 MB in the end (delta: -5.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.00 ms. Allocated memory is still 56.6 MB. Free memory was 38.8 MB in the beginning and 37.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.15 ms. Allocated memory is still 56.6 MB. Free memory was 37.1 MB in the beginning and 35.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 464.56 ms. Allocated memory is still 56.6 MB. Free memory was 35.8 MB in the beginning and 38.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 143267.79 ms. Allocated memory was 56.6 MB in the beginning and 88.1 MB in the end (delta: 31.5 MB). Free memory was 38.1 MB in the beginning and 62.3 MB in the end (delta: -24.2 MB). Peak memory consumption was 36.9 MB. Max. memory is 16.1 GB. * Witness Printer took 64.80 ms. Allocated memory is still 88.1 MB. Free memory was 62.3 MB in the beginning and 59.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 143163.5ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 13.0ms, AutomataDifference: 103503.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 22657.3ms, InitialAbstractionConstructionTime: 22.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 75 SDtfs, 137 SDslu, 136 SDs, 0 SdLazy, 291 SolverSat, 63 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2793.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 112102.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 51.9ms AutomataMinimizationTime, 5 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 196 HoareAnnotationTreeSize, 4 FomulaSimplifications, 334 FormulaSimplificationTreeSizeReduction, 176.2ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 147 FormulaSimplificationTreeSizeReductionInter, 22475.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 71.5ms SsaConstructionTime, 208.8ms SatisfiabilityAnalysisTime, 14598.0ms InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 146 ConstructedInterpolants, 0 QuantifiedInterpolants, 1101 SizeOfPredicates, 50 NumberOfNonLiveVariables, 315 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 7/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((cond == 1bv32 && array == 0bv32) && cond == 1bv32) && ~bvult32(index2, 100000bv32)) && ~bvult32(index1, index2) - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((((((cond == 1bv32 && ~bvult32(~bvadd64(index2, 1bv32), 100000bv32)) && ~bvult32(~bvadd64(4294967295bv32, index1), ~bvadd64(index2, 1bv32))) && array == 0bv32) && (unknown-#memory_int-unknown[array][~bvadd64(~bvmul32(index2, 4bv32), array)] == unknown-#memory_int-unknown[array][~bvadd64(array, ~bvmul32(index1, 4bv32))] || !~bvult32(index2, index1))) && cond == 1bv32) && unknown-#memory_int-unknown[array][~bvadd64(4294967292bv32, array, ~bvmul32(index1, 4bv32))] == unknown-#memory_int-unknown[array][~bvadd64(4bv32, ~bvmul32(index2, 4bv32), array)]) || ((!(cond == 0bv32) && ~bvult32(index2, 100000bv32)) && ~bvult32(index1, index2)) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (!(cond == 0bv32) && ~bvult32(~bvadd64(index2, 1bv32), 100000bv32)) && ~bvult32(~bvadd64(4294967295bv32, index1), ~bvadd64(index2, 1bv32)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((cond == 1bv32 && ~bvult32(index1, 100000bv32)) && array == 0bv32) && loop_entered == 0bv32) && ~bvult32(index2, 100000bv32)) || ((((((cond == 1bv32 && ~bvult32(~bvadd64(index2, 1bv32), 100000bv32)) && ~bvult32(~bvadd64(4294967295bv32, index1), ~bvadd64(index2, 1bv32))) && array == 0bv32) && (unknown-#memory_int-unknown[array][~bvadd64(~bvmul32(index2, 4bv32), array)] == unknown-#memory_int-unknown[array][~bvadd64(array, ~bvmul32(index1, 4bv32))] || !~bvult32(index2, index1))) && cond == 1bv32) && unknown-#memory_int-unknown[array][~bvadd64(4294967292bv32, array, ~bvmul32(index1, 4bv32))] == unknown-#memory_int-unknown[array][~bvadd64(4bv32, ~bvmul32(index2, 4bv32), array)]) RESULT: Ultimate proved your program to be correct! [2021-10-16 02:37:04,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90584ea3-93fd-40d3-8203-caf3950e1798/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...