./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ms2.c --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_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/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_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ms2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/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_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/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 125fe310e2ae1e5a109eb21d52d95bf156448ac6c5b2e6793bd0b6f80e48ce1d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:25:44,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:25:44,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:25:44,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:25:44,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:25:44,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:25:44,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:25:44,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:25:44,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:25:44,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:25:44,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:25:44,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:25:44,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:25:44,161 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:25:44,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:25:44,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:25:44,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:25:44,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:25:44,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:25:44,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:25:44,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:25:44,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:25:44,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:25:44,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:25:44,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:25:44,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:25:44,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:25:44,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:25:44,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:25:44,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:25:44,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:25:44,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:25:44,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:25:44,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:25:44,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:25:44,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:25:44,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:25:44,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:25:44,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:25:44,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:25:44,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:25:44,184 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:25:44,202 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:25:44,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:25:44,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:25:44,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:25:44,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:25:44,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:25:44,204 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:25:44,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:25:44,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:25:44,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:25:44,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:25:44,206 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:25:44,206 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:25:44,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:25:44,207 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_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 125fe310e2ae1e5a109eb21d52d95bf156448ac6c5b2e6793bd0b6f80e48ce1d [2021-12-06 18:25:44,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:25:44,415 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:25:44,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:25:44,417 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:25:44,418 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:25:44,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/ms2.c [2021-12-06 18:25:44,462 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/data/04f22540a/ff3a76bc5973456a9ab90dbcb8d39787/FLAGdf834b9ba [2021-12-06 18:25:44,844 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:25:44,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/sv-benchmarks/c/array-fpi/ms2.c [2021-12-06 18:25:44,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/data/04f22540a/ff3a76bc5973456a9ab90dbcb8d39787/FLAGdf834b9ba [2021-12-06 18:25:44,859 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/data/04f22540a/ff3a76bc5973456a9ab90dbcb8d39787 [2021-12-06 18:25:44,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:25:44,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:25:44,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:25:44,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:25:44,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:25:44,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:25:44" (1/1) ... [2021-12-06 18:25:44,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbf3118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:44, skipping insertion in model container [2021-12-06 18:25:44,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:25:44" (1/1) ... [2021-12-06 18:25:44,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:25:44,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:25:45,000 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_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/sv-benchmarks/c/array-fpi/ms2.c[586,599] [2021-12-06 18:25:45,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:25:45,018 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:25:45,028 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_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/sv-benchmarks/c/array-fpi/ms2.c[586,599] [2021-12-06 18:25:45,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:25:45,043 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:25:45,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45 WrapperNode [2021-12-06 18:25:45,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:25:45,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:25:45,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:25:45,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:25:45,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,080 INFO L137 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-06 18:25:45,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:25:45,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:25:45,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:25:45,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:25:45,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:25:45,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:25:45,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:25:45,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:25:45,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (1/1) ... [2021-12-06 18:25:45,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:25:45,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:25:45,137 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:25:45,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:25:45,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:25:45,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:25:45,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:25:45,218 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:25:45,219 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:25:45,311 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:25:45,317 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:25:45,317 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 18:25:45,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:25:45 BoogieIcfgContainer [2021-12-06 18:25:45,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:25:45,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:25:45,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:25:45,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:25:45,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:25:44" (1/3) ... [2021-12-06 18:25:45,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cb05cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:25:45, skipping insertion in model container [2021-12-06 18:25:45,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:25:45" (2/3) ... [2021-12-06 18:25:45,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cb05cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:25:45, skipping insertion in model container [2021-12-06 18:25:45,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:25:45" (3/3) ... [2021-12-06 18:25:45,334 INFO L111 eAbstractionObserver]: Analyzing ICFG ms2.c [2021-12-06 18:25:45,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:25:45,338 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:25:45,374 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:25:45,379 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 18:25:45,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:25:45,390 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 18:25:45,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:45,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:45,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:45,399 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2021-12-06 18:25:45,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:45,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429800271] [2021-12-06 18:25:45,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:45,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:45,513 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 18:25:45,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:45,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429800271] [2021-12-06 18:25:45,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429800271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:45,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:45,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:25:45,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139908447] [2021-12-06 18:25:45,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:45,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:25:45,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:25:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:25:45,540 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:45,550 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-12-06 18:25:45,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:25:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 18:25:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:25:45,558 INFO L225 Difference]: With dead ends: 34 [2021-12-06 18:25:45,558 INFO L226 Difference]: Without dead ends: 15 [2021-12-06 18:25:45,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:25:45,563 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:25:45,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:25:45,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-06 18:25:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-06 18:25:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-12-06 18:25:45,588 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-12-06 18:25:45,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:45,588 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-12-06 18:25:45,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-12-06 18:25:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 18:25:45,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:45,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:45,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:25:45,589 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:45,590 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2021-12-06 18:25:45,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:45,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941312123] [2021-12-06 18:25:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:45,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:45,652 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 18:25:45,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941312123] [2021-12-06 18:25:45,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941312123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:45,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:45,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:25:45,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107065185] [2021-12-06 18:25:45,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:45,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:25:45,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:45,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:25:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:25:45,656 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:45,695 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-12-06 18:25:45,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:25:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-06 18:25:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:25:45,696 INFO L225 Difference]: With dead ends: 28 [2021-12-06 18:25:45,696 INFO L226 Difference]: Without dead ends: 20 [2021-12-06 18:25:45,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:25:45,698 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:25:45,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 11 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:25:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-06 18:25:45,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-12-06 18:25:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-12-06 18:25:45,703 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2021-12-06 18:25:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:45,703 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-12-06 18:25:45,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-12-06 18:25:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:25:45,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:45,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:45,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:25:45,704 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2021-12-06 18:25:45,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:45,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40601703] [2021-12-06 18:25:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:45,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:25:45,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:45,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40601703] [2021-12-06 18:25:45,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40601703] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:25:45,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:25:45,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:25:45,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449800819] [2021-12-06 18:25:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:25:45,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:25:45,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:25:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:25:45,807 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:45,843 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-12-06 18:25:45,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:25:45,843 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 18:25:45,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:25:45,844 INFO L225 Difference]: With dead ends: 25 [2021-12-06 18:25:45,844 INFO L226 Difference]: Without dead ends: 21 [2021-12-06 18:25:45,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:25:45,846 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:25:45,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 25 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:25:45,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-06 18:25:45,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-12-06 18:25:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-12-06 18:25:45,850 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2021-12-06 18:25:45,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:45,850 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-12-06 18:25:45,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:45,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-12-06 18:25:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 18:25:45,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:45,851 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:45,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:25:45,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:45,852 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2021-12-06 18:25:45,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:45,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819371716] [2021-12-06 18:25:45,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:45,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:45,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:45,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819371716] [2021-12-06 18:25:45,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819371716] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:25:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818553779] [2021-12-06 18:25:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:45,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:45,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:25:45,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:25:45,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:25:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:45,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:25:45,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:25:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:46,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:25:46,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:46,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818553779] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:25:46,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:25:46,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 18:25:46,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925926360] [2021-12-06 18:25:46,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:25:46,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:25:46,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:46,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:25:46,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:25:46,110 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:46,169 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-12-06 18:25:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:25:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 18:25:46,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:25:46,170 INFO L225 Difference]: With dead ends: 39 [2021-12-06 18:25:46,170 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 18:25:46,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:25:46,172 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:25:46,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 22 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:25:46,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 18:25:46,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-12-06 18:25:46,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-12-06 18:25:46,176 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2021-12-06 18:25:46,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:46,176 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-12-06 18:25:46,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:46,176 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-12-06 18:25:46,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 18:25:46,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:46,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:46,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:25:46,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:46,379 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:46,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2021-12-06 18:25:46,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:46,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778828314] [2021-12-06 18:25:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:46,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:46,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:46,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778828314] [2021-12-06 18:25:46,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778828314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:25:46,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856229153] [2021-12-06 18:25:46,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:25:46,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:46,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:25:46,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:25:46,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:25:47,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:25:47,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:25:47,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 18:25:47,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:25:47,117 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 13 treesize of output 9 [2021-12-06 18:25:47,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:25:47,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 18:25:47,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:25:47,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 28 [2021-12-06 18:25:47,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:25:47,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2021-12-06 18:25:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:47,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:25:56,489 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 206 treesize of output 194 [2021-12-06 18:25:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:57,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856229153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:25:57,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:25:57,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2021-12-06 18:25:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715505948] [2021-12-06 18:25:57,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:25:57,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 18:25:57,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 18:25:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=536, Unknown=8, NotChecked=0, Total=650 [2021-12-06 18:25:57,581 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:58,480 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-12-06 18:25:58,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:25:58,480 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 18:25:58,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:25:58,481 INFO L225 Difference]: With dead ends: 40 [2021-12-06 18:25:58,481 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 18:25:58,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=205, Invalid=909, Unknown=8, NotChecked=0, Total=1122 [2021-12-06 18:25:58,482 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:25:58,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 186 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2021-12-06 18:25:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 18:25:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-12-06 18:25:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:58,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-12-06 18:25:58,486 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2021-12-06 18:25:58,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:58,486 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-12-06 18:25:58,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.0) internal successors, (52), 26 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:58,486 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-12-06 18:25:58,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:25:58,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:58,487 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:58,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:25:58,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:58,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:58,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:58,691 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2021-12-06 18:25:58,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:58,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425964973] [2021-12-06 18:25:58,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:58,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:58,772 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:58,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:58,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425964973] [2021-12-06 18:25:58,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425964973] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:25:58,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429564156] [2021-12-06 18:25:58,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:25:58,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:58,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:25:58,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:25:58,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:25:58,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 18:25:58,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:25:58,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:25:58,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:25:58,871 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:58,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:25:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:58,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429564156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:25:58,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:25:58,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-06 18:25:58,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676026915] [2021-12-06 18:25:58,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:25:58,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:25:58,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:25:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:25:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:25:58,903 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:58,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:25:58,965 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2021-12-06 18:25:58,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:25:58,965 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 18:25:58,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:25:58,966 INFO L225 Difference]: With dead ends: 56 [2021-12-06 18:25:58,966 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 18:25:58,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:25:58,967 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 33 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:25:58,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 38 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:25:58,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 18:25:58,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 27. [2021-12-06 18:25:58,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:58,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-06 18:25:58,977 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2021-12-06 18:25:58,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:25:58,977 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-06 18:25:58,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:25:58,977 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-06 18:25:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 18:25:58,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:25:58,978 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:25:59,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 18:25:59,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:59,180 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:25:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:25:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 4 times [2021-12-06 18:25:59,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:25:59,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127466041] [2021-12-06 18:25:59,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:25:59,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:25:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:25:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:25:59,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:25:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127466041] [2021-12-06 18:25:59,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127466041] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:25:59,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710250261] [2021-12-06 18:25:59,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:25:59,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:25:59,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:25:59,636 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:25:59,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:25:59,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:25:59,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:25:59,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-06 18:25:59,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:25:59,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 18:25:59,779 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-06 18:25:59,779 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 23 treesize of output 22 [2021-12-06 18:25:59,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:25:59,861 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:25:59,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-12-06 18:25:59,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:25:59,952 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-12-06 18:25:59,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 51 [2021-12-06 18:26:00,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:00,054 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:26:00,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2021-12-06 18:26:00,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:00,218 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:26:00,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 15 [2021-12-06 18:26:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:00,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:13,389 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-06 18:26:13,389 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 897 treesize of output 873 [2021-12-06 18:26:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:15,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710250261] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:26:15,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:26:15,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 14] total 40 [2021-12-06 18:26:15,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282411066] [2021-12-06 18:26:15,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:26:15,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-06 18:26:15,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:15,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-06 18:26:15,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1370, Unknown=6, NotChecked=0, Total=1560 [2021-12-06 18:26:15,230 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:16,161 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-12-06 18:26:16,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:26:16,161 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 18:26:16,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:16,162 INFO L225 Difference]: With dead ends: 46 [2021-12-06 18:26:16,162 INFO L226 Difference]: Without dead ends: 35 [2021-12-06 18:26:16,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=369, Invalid=2381, Unknown=6, NotChecked=0, Total=2756 [2021-12-06 18:26:16,164 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:16,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 106 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 316 Invalid, 0 Unknown, 144 Unchecked, 0.2s Time] [2021-12-06 18:26:16,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-06 18:26:16,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-12-06 18:26:16,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-12-06 18:26:16,168 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 26 [2021-12-06 18:26:16,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:16,168 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-12-06 18:26:16,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:16,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-12-06 18:26:16,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:26:16,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:16,169 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:16,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:26:16,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:16,370 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash -483356095, now seen corresponding path program 5 times [2021-12-06 18:26:16,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:16,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49546034] [2021-12-06 18:26:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:16,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:16,479 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:16,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:16,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49546034] [2021-12-06 18:26:16,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49546034] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:26:16,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995523042] [2021-12-06 18:26:16,479 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:26:16,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:16,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:16,480 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:16,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:26:16,532 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 18:26:16,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:26:16,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:26:16,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:16,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 17 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:16,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995523042] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:26:16,675 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:26:16,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-06 18:26:16,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805450790] [2021-12-06 18:26:16,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:26:16,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 18:26:16,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:26:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 18:26:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:26:16,676 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:26:16,788 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2021-12-06 18:26:16,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:26:16,789 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-06 18:26:16,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:26:16,789 INFO L225 Difference]: With dead ends: 72 [2021-12-06 18:26:16,789 INFO L226 Difference]: Without dead ends: 51 [2021-12-06 18:26:16,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-12-06 18:26:16,790 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 55 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:26:16,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 37 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:26:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-06 18:26:16,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 35. [2021-12-06 18:26:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:16,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-12-06 18:26:16,794 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 29 [2021-12-06 18:26:16,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:26:16,795 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-12-06 18:26:16,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:26:16,795 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-12-06 18:26:16,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 18:26:16,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:26:16,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:26:16,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:26:16,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 18:26:16,997 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:26:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:26:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1023492733, now seen corresponding path program 6 times [2021-12-06 18:26:16,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:26:16,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425248173] [2021-12-06 18:26:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:26:17,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:26:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:26:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:17,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:26:17,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425248173] [2021-12-06 18:26:17,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425248173] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:26:17,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471966910] [2021-12-06 18:26:17,779 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:26:17,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:26:17,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:26:17,780 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:26:17,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:26:17,857 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 18:26:17,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:26:17,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-06 18:26:17,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:26:17,870 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 10 treesize of output 8 [2021-12-06 18:26:17,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 18:26:17,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:17,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 18:26:18,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:18,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:18,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2021-12-06 18:26:18,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:18,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:18,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:18,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 77 [2021-12-06 18:26:19,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:19,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 89 [2021-12-06 18:26:19,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:19,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:19,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 87 [2021-12-06 18:26:20,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:20,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:20,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:20,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:26:20,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 83 [2021-12-06 18:26:21,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:21,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:21,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:26:21,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 34 [2021-12-06 18:26:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:26:21,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:26:52,854 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-12-06 18:26:52,854 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 6326 treesize of output 6242 [2021-12-06 18:28:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:22,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471966910] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:28:22,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:28:22,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 21] total 57 [2021-12-06 18:28:22,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586737987] [2021-12-06 18:28:22,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:28:22,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-06 18:28:22,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:22,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-06 18:28:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2705, Unknown=9, NotChecked=0, Total=3192 [2021-12-06 18:28:22,176 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 57 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:37,584 WARN L227 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:28:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:48,606 INFO L93 Difference]: Finished difference Result 93 states and 110 transitions. [2021-12-06 18:28:48,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-06 18:28:48,607 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-06 18:28:48,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:48,608 INFO L225 Difference]: With dead ends: 93 [2021-12-06 18:28:48,608 INFO L226 Difference]: Without dead ends: 87 [2021-12-06 18:28:48,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 57.6s TimeCoverageRelationStatistics Valid=1020, Invalid=5773, Unknown=13, NotChecked=0, Total=6806 [2021-12-06 18:28:48,611 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 18 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 177 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:48,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 71 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 177 Unchecked, 0.1s Time] [2021-12-06 18:28:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-06 18:28:48,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2021-12-06 18:28:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 81 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2021-12-06 18:28:48,620 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 31 [2021-12-06 18:28:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:48,620 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2021-12-06 18:28:48,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.3859649122807018) internal successors, (79), 57 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:48,621 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2021-12-06 18:28:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:28:48,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:48,622 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:28:48,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:28:48,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:48,823 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash 17045471, now seen corresponding path program 7 times [2021-12-06 18:28:48,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:48,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838348660] [2021-12-06 18:28:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:48,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:48,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:48,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838348660] [2021-12-06 18:28:48,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838348660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:28:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374040201] [2021-12-06 18:28:48,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:28:48,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:48,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:48,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:48,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:28:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:49,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 18:28:49,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 18:28:49,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:28:49,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374040201] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:28:49,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:28:49,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 15 [2021-12-06 18:28:49,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505079822] [2021-12-06 18:28:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:28:49,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:28:49,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:28:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:28:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:28:49,051 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:49,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:28:49,098 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2021-12-06 18:28:49,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:28:49,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-06 18:28:49,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:28:49,099 INFO L225 Difference]: With dead ends: 94 [2021-12-06 18:28:49,100 INFO L226 Difference]: Without dead ends: 73 [2021-12-06 18:28:49,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:28:49,100 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:28:49,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 15 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:28:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-12-06 18:28:49,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 59. [2021-12-06 18:28:49,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2021-12-06 18:28:49,107 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 34 [2021-12-06 18:28:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:28:49,107 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2021-12-06 18:28:49,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:28:49,107 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2021-12-06 18:28:49,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:28:49,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:28:49,108 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:28:49,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:28:49,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:28:49,309 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:28:49,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:28:49,309 INFO L85 PathProgramCache]: Analyzing trace with hash -880704545, now seen corresponding path program 8 times [2021-12-06 18:28:49,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:28:49,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629420136] [2021-12-06 18:28:49,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:28:49,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:28:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:28:50,293 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:50,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:28:50,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629420136] [2021-12-06 18:28:50,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629420136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:28:50,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94928088] [2021-12-06 18:28:50,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:28:50,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:28:50,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:28:50,294 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:28:50,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0fd61fe-200d-40c4-b6e3-3cb18812c66b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:28:50,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:28:50,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:28:50,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-06 18:28:50,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:28:50,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-06 18:28:50,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2021-12-06 18:28:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2021-12-06 18:28:50,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-12-06 18:28:50,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:50,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 56 [2021-12-06 18:28:51,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 66 [2021-12-06 18:28:51,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:51,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 69 [2021-12-06 18:28:51,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:28:51,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 74 [2021-12-06 18:28:51,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2021-12-06 18:28:51,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:28:51,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-12-06 18:28:52,029 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:28:52,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:29:07,919 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 Int) (v_ArrVal_353 Int) (v_ArrVal_351 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_346)))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (< 0 v_ArrVal_347) (< (+ v_ArrVal_349 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) v_ArrVal_351) (< (+ v_ArrVal_351 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) v_ArrVal_353) (< (+ v_ArrVal_347 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_349) (<= (+ v_ArrVal_353 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) c_~N~0) (let ((.cse2 (mod |c_ULTIMATE.start_main_~i~0#1| 2))) (and (or (< .cse2 v_ArrVal_346) (and (< |c_ULTIMATE.start_main_~i~0#1| 0) (not (= .cse2 0)))) (< .cse2 (+ v_ArrVal_346 2)))))))) is different from false [2021-12-06 18:29:12,217 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 Int) (v_ArrVal_353 Int) (v_ArrVal_351 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4) v_ArrVal_346)))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse0 (mod .cse1 2))) (and (< .cse0 (+ v_ArrVal_346 2)) (or (and (not (= .cse0 0)) (< .cse1 0)) (< .cse0 v_ArrVal_346))))) (< 0 v_ArrVal_347) (< (+ v_ArrVal_347 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_349) (< (+ v_ArrVal_351 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) v_ArrVal_353) (< (+ v_ArrVal_349 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) v_ArrVal_351) (<= (+ v_ArrVal_353 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) c_~N~0))))) is different from false [2021-12-06 18:31:14,111 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 Int) (v_ArrVal_344 Int) (v_ArrVal_353 Int) (v_ArrVal_341 Int) (v_ArrVal_351 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7) v_ArrVal_341) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7 4) v_ArrVal_344) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse7) v_ArrVal_346)))) (.cse4 (mod |c_ULTIMATE.start_main_~i~0#1| 2))) (let ((.cse5 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse6 (not (= .cse4 0))) (.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (or (< 0 v_ArrVal_347) (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse0 (mod .cse1 2))) (and (or (and (not (= .cse0 0)) (< .cse1 0)) (< .cse0 v_ArrVal_344)) (< .cse0 (+ v_ArrVal_344 2))))) (< (+ v_ArrVal_351 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) v_ArrVal_353) (< (+ v_ArrVal_349 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) v_ArrVal_351) (and (< .cse4 (+ v_ArrVal_346 2)) (or (< .cse4 v_ArrVal_346) (and (< .cse5 0) .cse6))) (<= (+ v_ArrVal_353 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) .cse5) (and (< .cse4 (+ v_ArrVal_341 2)) (or (and (< |c_ULTIMATE.start_main_~i~0#1| 0) .cse6) (< .cse4 v_ArrVal_341))) (< (+ v_ArrVal_347 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) v_ArrVal_349))))) is different from false [2021-12-06 18:32:10,882 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_346 Int) (v_ArrVal_344 Int) (v_ArrVal_353 Int) (v_ArrVal_341 Int) (v_ArrVal_351 Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int) (v_ArrVal_349 Int) (v_ArrVal_347 Int)) (let ((.cse5 (+ |c_ULTIMATE.start_main_~i~0#1| 1))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse7 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse7 4) v_ArrVal_341) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse7) v_ArrVal_344) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse7) v_ArrVal_346)))) (.cse0 (mod .cse5 2))) (let ((.cse1 (not (= .cse0 0))) (.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse2 (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (or (< 0 v_ArrVal_347) (and (< .cse0 (+ v_ArrVal_346 2)) (or (< .cse0 v_ArrVal_346) (and .cse1 (< .cse2 0)))) (< (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_347)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) v_ArrVal_347) v_ArrVal_349) (< (+ v_ArrVal_349 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_349)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) v_ArrVal_351) (and (< .cse0 (+ v_ArrVal_341 2)) (or (< .cse0 v_ArrVal_341) (and .cse1 (< .cse5 0)))) (< (+ v_ArrVal_351 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_351)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12))) v_ArrVal_353) (let ((.cse6 (mod |c_ULTIMATE.start_main_~i~0#1| 2))) (and (< .cse6 (+ v_ArrVal_344 2)) (or (and (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 0) (not (= .cse6 0))) (< .cse6 v_ArrVal_344)))) (<= (+ v_ArrVal_353 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |ULTIMATE.start_main_~#sum~0#1.offset| v_ArrVal_353)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 16))) .cse2)))))) is different from false [2021-12-06 18:32:11,001 INFO L354 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2021-12-06 18:32:11,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 401095 treesize of output 398575