./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:44:23,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:44:23,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:44:23,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:44:23,113 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:44:23,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:44:23,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:44:23,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:44:23,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:44:23,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:44:23,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:44:23,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:44:23,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:44:23,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:44:23,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:44:23,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:44:23,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:44:23,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:44:23,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:44:23,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:44:23,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:44:23,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:44:23,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:44:23,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:44:23,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:44:23,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:44:23,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:44:23,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:44:23,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:44:23,140 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:44:23,141 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:44:23,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:44:23,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:44:23,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:44:23,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:44:23,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:44:23,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:44:23,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:44:23,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:44:23,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:44:23,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:44:23,146 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:44:23,164 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:44:23,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:44:23,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:44:23,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:44:23,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:44:23,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:44:23,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:44:23,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:44:23,166 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:44:23,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:44:23,167 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:44:23,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:44:23,168 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:44:23,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:44:23,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:44:23,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:44:23,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:44:23,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:44:23,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:44:23,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:44:23,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:44:23,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:44:23,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:44:23,169 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:44:23,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:44:23,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:44:23,170 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:44:23,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 455c8355a70d1790a36f88862e376be10c9f4a7e771f908daaa372028f23f8c4 [2021-12-06 17:44:23,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:44:23,364 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:44:23,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:44:23,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:44:23,367 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:44:23,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2021-12-06 17:44:23,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/data/c3e43dc6f/da5940e5bce34776872106e1d3167a96/FLAG761d9a8c4 [2021-12-06 17:44:23,765 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:44:23,765 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i [2021-12-06 17:44:23,769 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/data/c3e43dc6f/da5940e5bce34776872106e1d3167a96/FLAG761d9a8c4 [2021-12-06 17:44:23,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/data/c3e43dc6f/da5940e5bce34776872106e1d3167a96 [2021-12-06 17:44:23,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:44:23,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:44:23,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:44:23,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:44:23,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:44:23,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:23,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c7befeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23, skipping insertion in model container [2021-12-06 17:44:23,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:23,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:44:23,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:44:23,919 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2021-12-06 17:44:23,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:44:23,936 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:44:23,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-1.i[834,847] [2021-12-06 17:44:23,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:44:23,969 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:44:23,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23 WrapperNode [2021-12-06 17:44:23,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:44:23,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:44:23,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:44:23,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:44:23,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:23,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,003 INFO L137 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-12-06 17:44:24,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:44:24,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:44:24,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:44:24,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:44:24,012 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:44:24,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:44:24,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:44:24,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:44:24,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (1/1) ... [2021-12-06 17:44:24,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:44:24,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:24,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:44:24,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:44:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:44:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:44:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:44:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:44:24,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:44:24,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:44:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:44:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 17:44:24,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 17:44:24,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:44:24,140 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:44:24,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:44:24,221 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:44:24,226 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:44:24,226 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 17:44:24,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:44:24 BoogieIcfgContainer [2021-12-06 17:44:24,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:44:24,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:44:24,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:44:24,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:44:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:44:23" (1/3) ... [2021-12-06 17:44:24,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da4eded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:44:24, skipping insertion in model container [2021-12-06 17:44:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:44:23" (2/3) ... [2021-12-06 17:44:24,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da4eded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:44:24, skipping insertion in model container [2021-12-06 17:44:24,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:44:24" (3/3) ... [2021-12-06 17:44:24,234 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-1.i [2021-12-06 17:44:24,238 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:44:24,238 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:44:24,274 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:44:24,279 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-06 17:44:24,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:44:24,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:44:24,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 17:44:24,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:24,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:24,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:24,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:24,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1969531013, now seen corresponding path program 1 times [2021-12-06 17:44:24,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:24,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753017648] [2021-12-06 17:44:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:24,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:24,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:24,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753017648] [2021-12-06 17:44:24,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753017648] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:44:24,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:44:24,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:44:24,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987406697] [2021-12-06 17:44:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:44:24,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:44:24,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:24,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:44:24,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:44:24,488 INFO L87 Difference]: Start difference. First operand has 22 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:44:24,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:24,538 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2021-12-06 17:44:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:44:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 17:44:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:24,548 INFO L225 Difference]: With dead ends: 47 [2021-12-06 17:44:24,548 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 17:44:24,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:44:24,555 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:24,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 36 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:44:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 17:44:24,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2021-12-06 17:44:24,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 17:44:24,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-06 17:44:24,587 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 10 [2021-12-06 17:44:24,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:24,587 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-06 17:44:24,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:44:24,587 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-06 17:44:24,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 17:44:24,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:24,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:24,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:44:24,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1314333447, now seen corresponding path program 1 times [2021-12-06 17:44:24,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:24,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343797998] [2021-12-06 17:44:24,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:24,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:24,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:24,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343797998] [2021-12-06 17:44:24,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343797998] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:24,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190537010] [2021-12-06 17:44:24,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:24,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:24,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:24,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:24,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:44:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:24,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:44:24,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:24,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:44:24,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 17:44:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:24,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:25,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-12-06 17:44:25,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 17:44:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:25,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190537010] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:44:25,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:44:25,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 8, 9] total 14 [2021-12-06 17:44:25,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812797384] [2021-12-06 17:44:25,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:25,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:44:25,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:25,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:44:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:44:25,175 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:44:25,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:25,408 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-12-06 17:44:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:44:25,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 17:44:25,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:25,410 INFO L225 Difference]: With dead ends: 53 [2021-12-06 17:44:25,410 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 17:44:25,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:44:25,412 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:25,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 90 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:44:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 17:44:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2021-12-06 17:44:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 26 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:44:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-12-06 17:44:25,419 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 12 [2021-12-06 17:44:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:25,420 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-12-06 17:44:25,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 13 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:44:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-12-06 17:44:25,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 17:44:25,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:25,421 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:25,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:44:25,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-06 17:44:25,624 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:25,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1546622032, now seen corresponding path program 1 times [2021-12-06 17:44:25,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:25,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683926697] [2021-12-06 17:44:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:25,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 17:44:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:25,731 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:44:25,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:25,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683926697] [2021-12-06 17:44:25,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683926697] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:25,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612734107] [2021-12-06 17:44:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:25,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:25,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:25,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:25,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:44:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:25,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 17:44:25,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:25,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-06 17:44:26,838 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-06 17:44:26,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2021-12-06 17:44:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:26,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:27,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2021-12-06 17:44:27,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2021-12-06 17:44:27,396 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:27,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612734107] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:44:27,397 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:44:27,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2021-12-06 17:44:27,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146020573] [2021-12-06 17:44:27,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:27,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 17:44:27,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:27,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 17:44:27,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:44:27,399 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:44:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:28,732 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2021-12-06 17:44:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 17:44:28,734 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 23 [2021-12-06 17:44:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:28,735 INFO L225 Difference]: With dead ends: 99 [2021-12-06 17:44:28,735 INFO L226 Difference]: Without dead ends: 74 [2021-12-06 17:44:28,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=206, Invalid=850, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:44:28,737 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 65 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:28,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 180 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 215 Invalid, 0 Unknown, 43 Unchecked, 0.4s Time] [2021-12-06 17:44:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-06 17:44:28,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 42. [2021-12-06 17:44:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 35 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 17:44:28,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2021-12-06 17:44:28,745 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2021-12-06 17:44:28,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:28,746 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2021-12-06 17:44:28,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.764705882352941) internal successors, (47), 18 states have internal predecessors, (47), 5 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:44:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2021-12-06 17:44:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 17:44:28,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:28,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:28,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:44:28,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:28,949 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:28,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2127315698, now seen corresponding path program 2 times [2021-12-06 17:44:28,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:28,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740459921] [2021-12-06 17:44:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:28,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:29,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:44:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:29,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:44:29,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:29,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740459921] [2021-12-06 17:44:29,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740459921] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:29,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769191748] [2021-12-06 17:44:29,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:44:29,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:29,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:29,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:29,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:44:29,079 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:44:29,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:44:29,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 17:44:29,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:29,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-06 17:44:29,123 INFO L354 Elim1Store]: treesize reduction 55, result has 21.4 percent of original size [2021-12-06 17:44:29,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2021-12-06 17:44:29,167 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-06 17:44:29,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 17:44:29,388 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-06 17:44:29,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2021-12-06 17:44:29,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:29,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:30,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2021-12-06 17:44:30,855 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-06 17:44:30,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 847 treesize of output 839 [2021-12-06 17:44:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:44:31,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769191748] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:44:31,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:44:31,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17, 18] total 34 [2021-12-06 17:44:31,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611596889] [2021-12-06 17:44:31,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:31,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 17:44:31,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 17:44:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:44:31,025 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 34 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 32 states have internal predecessors, (58), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:44:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:32,085 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2021-12-06 17:44:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:44:32,086 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 32 states have internal predecessors, (58), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 25 [2021-12-06 17:44:32,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:32,088 INFO L225 Difference]: With dead ends: 90 [2021-12-06 17:44:32,088 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 17:44:32,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=329, Invalid=1393, Unknown=0, NotChecked=0, Total=1722 [2021-12-06 17:44:32,089 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 75 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:32,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 129 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 282 Invalid, 0 Unknown, 67 Unchecked, 0.5s Time] [2021-12-06 17:44:32,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 17:44:32,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-12-06 17:44:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 44 states have internal predecessors, (47), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-06 17:44:32,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2021-12-06 17:44:32,097 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 25 [2021-12-06 17:44:32,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:32,097 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2021-12-06 17:44:32,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 30 states have (on average 1.9333333333333333) internal successors, (58), 32 states have internal predecessors, (58), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:44:32,098 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2021-12-06 17:44:32,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 17:44:32,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:32,098 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:32,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:44:32,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:32,300 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:32,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:32,301 INFO L85 PathProgramCache]: Analyzing trace with hash 979241, now seen corresponding path program 1 times [2021-12-06 17:44:32,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:32,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021780659] [2021-12-06 17:44:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:32,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:32,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:44:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 17:44:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:32,385 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:44:32,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:32,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021780659] [2021-12-06 17:44:32,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021780659] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:32,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266475232] [2021-12-06 17:44:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:32,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:32,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:32,386 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:32,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:44:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:32,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 17:44:32,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:32,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-06 17:44:32,483 INFO L354 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2021-12-06 17:44:32,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 17:44:32,533 INFO L354 Elim1Store]: treesize reduction 76, result has 18.3 percent of original size [2021-12-06 17:44:32,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2021-12-06 17:44:32,588 INFO L354 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2021-12-06 17:44:32,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2021-12-06 17:44:32,906 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-06 17:44:32,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2021-12-06 17:44:32,939 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:44:32,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:44:35,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 182 [2021-12-06 17:44:35,325 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-06 17:44:35,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11704 treesize of output 11574 [2021-12-06 17:44:54,673 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 17:44:54,674 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:44:54,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-06 17:44:54,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421884100] [2021-12-06 17:44:54,674 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:44:54,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:44:54,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:44:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:44:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 17:44:54,675 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:44:54,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:44:54,735 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2021-12-06 17:44:54,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:44:54,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-12-06 17:44:54,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:44:54,737 INFO L225 Difference]: With dead ends: 114 [2021-12-06 17:44:54,737 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 17:44:54,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 17:44:54,738 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 34 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:44:54,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 51 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:44:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 17:44:54,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 60. [2021-12-06 17:44:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 50 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:44:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-12-06 17:44:54,746 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 36 [2021-12-06 17:44:54,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:44:54,746 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-12-06 17:44:54,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:44:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-12-06 17:44:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 17:44:54,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:44:54,748 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:44:54,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:44:54,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:54,949 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:44:54,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:44:54,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1806134571, now seen corresponding path program 2 times [2021-12-06 17:44:54,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:44:54,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305375733] [2021-12-06 17:44:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:44:54,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:44:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:55,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:44:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:44:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:44:55,039 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:44:55,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:44:55,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305375733] [2021-12-06 17:44:55,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305375733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:44:55,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366093644] [2021-12-06 17:44:55,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:44:55,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:44:55,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:44:55,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:44:55,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:44:55,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:44:55,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:44:55,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 17:44:55,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:44:55,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-06 17:44:55,171 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-06 17:44:55,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 17:44:55,188 INFO L354 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2021-12-06 17:44:55,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 17:44:55,224 INFO L354 Elim1Store]: treesize reduction 72, result has 19.1 percent of original size [2021-12-06 17:44:55,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2021-12-06 17:44:55,250 INFO L354 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2021-12-06 17:44:55,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 17:44:55,533 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-06 17:44:55,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 16 [2021-12-06 17:44:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:44:55,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:02,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 338 [2021-12-06 17:45:02,813 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-06 17:45:02,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 109785 treesize of output 109193 [2021-12-06 17:45:23,458 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 17:45:23,458 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:45:23,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-12-06 17:45:23,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640477326] [2021-12-06 17:45:23,458 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:45:23,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:45:23,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:45:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2103, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 17:45:23,460 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:45:23,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:23,547 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2021-12-06 17:45:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:45:23,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2021-12-06 17:45:23,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:23,548 INFO L225 Difference]: With dead ends: 126 [2021-12-06 17:45:23,548 INFO L226 Difference]: Without dead ends: 79 [2021-12-06 17:45:23,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=347, Invalid=2103, Unknown=0, NotChecked=0, Total=2450 [2021-12-06 17:45:23,550 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 41 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:23,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:45:23,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-06 17:45:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2021-12-06 17:45:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 55 states have (on average 1.0727272727272728) internal successors, (59), 56 states have internal predecessors, (59), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-06 17:45:23,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2021-12-06 17:45:23,561 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 38 [2021-12-06 17:45:23,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:23,562 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2021-12-06 17:45:23,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:45:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2021-12-06 17:45:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 17:45:23,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:23,563 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:23,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:45:23,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 17:45:23,765 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:23,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1393619117, now seen corresponding path program 3 times [2021-12-06 17:45:23,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:23,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464361695] [2021-12-06 17:45:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:23,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:23,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 17:45:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 17:45:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:45:23,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:23,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464361695] [2021-12-06 17:45:23,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464361695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:23,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110503700] [2021-12-06 17:45:23,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:45:23,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:23,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:23,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:23,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:45:24,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 17:45:24,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:45:24,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-06 17:45:24,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:24,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-06 17:45:24,144 INFO L354 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2021-12-06 17:45:24,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-12-06 17:45:24,182 INFO L354 Elim1Store]: treesize reduction 76, result has 18.3 percent of original size [2021-12-06 17:45:24,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2021-12-06 17:45:24,240 INFO L354 Elim1Store]: treesize reduction 164, result has 16.3 percent of original size [2021-12-06 17:45:24,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 60 [2021-12-06 17:45:24,313 INFO L354 Elim1Store]: treesize reduction 276, result has 14.6 percent of original size [2021-12-06 17:45:24,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 80 [2021-12-06 17:45:24,419 INFO L354 Elim1Store]: treesize reduction 402, result has 13.4 percent of original size [2021-12-06 17:45:24,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 89 treesize of output 100 [2021-12-06 17:45:24,482 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 17:45:24,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:28,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 163 [2021-12-06 17:45:28,981 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-12-06 17:45:28,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 581 treesize of output 555 [2021-12-06 17:45:29,310 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:45:29,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110503700] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:45:29,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:45:29,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 28] total 46 [2021-12-06 17:45:29,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283113157] [2021-12-06 17:45:29,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:45:29,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 17:45:29,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:29,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 17:45:29,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1673, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 17:45:29,313 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 45 states have internal predecessors, (76), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:45:37,307 WARN L227 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 213 DAG size of output: 132 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:45:56,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:56,511 INFO L93 Difference]: Finished difference Result 153 states and 176 transitions. [2021-12-06 17:45:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 17:45:56,512 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 45 states have internal predecessors, (76), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 40 [2021-12-06 17:45:56,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:56,513 INFO L225 Difference]: With dead ends: 153 [2021-12-06 17:45:56,513 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 17:45:56,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 42 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=988, Invalid=3842, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 17:45:56,516 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 68 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 338 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:56,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 146 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 368 Invalid, 0 Unknown, 338 Unchecked, 0.7s Time] [2021-12-06 17:45:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 17:45:56,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2021-12-06 17:45:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 84 states have (on average 1.130952380952381) internal successors, (95), 85 states have internal predecessors, (95), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 17:45:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2021-12-06 17:45:56,533 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 40 [2021-12-06 17:45:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:56,533 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2021-12-06 17:45:56,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 45 states have internal predecessors, (76), 4 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:45:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2021-12-06 17:45:56,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 17:45:56,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:56,536 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:56,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:45:56,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:56,736 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:56,737 INFO L85 PathProgramCache]: Analyzing trace with hash 516233322, now seen corresponding path program 4 times [2021-12-06 17:45:56,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:56,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324765952] [2021-12-06 17:45:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:56,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:56,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:45:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:56,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 17:45:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:56,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:45:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:45:56,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:56,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324765952] [2021-12-06 17:45:56,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324765952] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:56,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852546398] [2021-12-06 17:45:56,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:45:56,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:56,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:56,842 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:56,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:45:57,113 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:45:57,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:45:57,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:45:57,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 17:45:57,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:57,315 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 17:45:57,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852546398] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:45:57,315 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:45:57,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2021-12-06 17:45:57,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284621050] [2021-12-06 17:45:57,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:45:57,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 17:45:57,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 17:45:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:45:57,316 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 17:45:58,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:58,802 INFO L93 Difference]: Finished difference Result 213 states and 261 transitions. [2021-12-06 17:45:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:45:58,803 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2021-12-06 17:45:58,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:58,804 INFO L225 Difference]: With dead ends: 213 [2021-12-06 17:45:58,804 INFO L226 Difference]: Without dead ends: 145 [2021-12-06 17:45:58,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:45:58,805 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 276 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:58,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 225 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:45:58,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-06 17:45:58,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 102. [2021-12-06 17:45:58,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 88 states have internal predecessors, (91), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 17:45:58,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 111 transitions. [2021-12-06 17:45:58,819 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 111 transitions. Word has length 51 [2021-12-06 17:45:58,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:58,819 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 111 transitions. [2021-12-06 17:45:58,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 17:45:58,819 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 111 transitions. [2021-12-06 17:45:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 17:45:58,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:58,820 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:58,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:45:59,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:59,022 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:45:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:59,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1488179135, now seen corresponding path program 5 times [2021-12-06 17:45:59,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:59,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335115379] [2021-12-06 17:45:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:59,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:59,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 17:45:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:59,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 17:45:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:45:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 4 proven. 256 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:45:59,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:59,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335115379] [2021-12-06 17:45:59,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335115379] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:45:59,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052602402] [2021-12-06 17:45:59,271 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:45:59,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:59,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:59,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:59,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e835bb35-1484-47b6-9a84-91fe50b3d112/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:46:33,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-12-06 17:46:33,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:46:33,186 WARN L261 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 119 conjunts are in the unsatisfiable core [2021-12-06 17:46:33,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:46:33,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-12-06 17:46:33,276 INFO L354 Elim1Store]: treesize reduction 53, result has 22.1 percent of original size [2021-12-06 17:46:33,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-12-06 17:46:33,333 INFO L354 Elim1Store]: treesize reduction 55, result has 21.4 percent of original size [2021-12-06 17:46:33,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-12-06 17:46:33,462 INFO L354 Elim1Store]: treesize reduction 132, result has 19.0 percent of original size [2021-12-06 17:46:33,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 60 [2021-12-06 17:46:33,688 INFO L354 Elim1Store]: treesize reduction 234, result has 16.4 percent of original size [2021-12-06 17:46:33,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 78 [2021-12-06 17:46:33,984 INFO L354 Elim1Store]: treesize reduction 360, result has 14.5 percent of original size [2021-12-06 17:46:33,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 94 treesize of output 102 [2021-12-06 17:46:34,408 INFO L354 Elim1Store]: treesize reduction 510, result has 13.0 percent of original size [2021-12-06 17:46:34,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 109 treesize of output 120 [2021-12-06 17:46:34,946 INFO L354 Elim1Store]: treesize reduction 684, result has 11.7 percent of original size [2021-12-06 17:46:34,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 130 treesize of output 144 [2021-12-06 17:46:35,869 INFO L354 Elim1Store]: treesize reduction 882, result has 10.7 percent of original size [2021-12-06 17:46:35,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 145 treesize of output 162 [2021-12-06 17:46:36,975 INFO L354 Elim1Store]: treesize reduction 1104, result has 9.9 percent of original size [2021-12-06 17:46:36,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 166 treesize of output 186 [2021-12-06 17:46:38,526 INFO L354 Elim1Store]: treesize reduction 1350, result has 9.2 percent of original size [2021-12-06 17:46:38,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 45 case distinctions, treesize of input 181 treesize of output 204 [2021-12-06 17:46:40,345 INFO L354 Elim1Store]: treesize reduction 1620, result has 8.5 percent of original size [2021-12-06 17:46:40,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 55 case distinctions, treesize of input 202 treesize of output 228 [2021-12-06 17:46:42,631 INFO L354 Elim1Store]: treesize reduction 1914, result has 8.0 percent of original size [2021-12-06 17:46:42,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 66 case distinctions, treesize of input 217 treesize of output 246 [2021-12-06 17:46:51,687 WARN L227 SmtUtils]: Spent 7.30s on a formula simplification. DAG size of input: 444 DAG size of output: 112 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 17:46:51,687 INFO L354 Elim1Store]: treesize reduction 4047, result has 6.7 percent of original size [2021-12-06 17:46:51,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 78 case distinctions, treesize of input 603 treesize of output 634