./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 23:21:41,036 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 23:21:41,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 23:21:41,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 23:21:41,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 23:21:41,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 23:21:41,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 23:21:41,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 23:21:41,107 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 23:21:41,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 23:21:41,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 23:21:41,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 23:21:41,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 23:21:41,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 23:21:41,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 23:21:41,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 23:21:41,118 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 23:21:41,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 23:21:41,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 23:21:41,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 23:21:41,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 23:21:41,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 23:21:41,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 23:21:41,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 23:21:41,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 23:21:41,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 23:21:41,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 23:21:41,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 23:21:41,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 23:21:41,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 23:21:41,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 23:21:41,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 23:21:41,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 23:21:41,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 23:21:41,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 23:21:41,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 23:21:41,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 23:21:41,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 23:21:41,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 23:21:41,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 23:21:41,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 23:21:41,144 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 23:21:41,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 23:21:41,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 23:21:41,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 23:21:41,174 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 23:21:41,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 23:21:41,176 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 23:21:41,176 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 23:21:41,176 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 23:21:41,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 23:21:41,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 23:21:41,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 23:21:41,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 23:21:41,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 23:21:41,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 23:21:41,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 23:21:41,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 23:21:41,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:21:41,179 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 23:21:41,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 23:21:41,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 23:21:41,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 23:21:41,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 23:21:41,181 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 23:21:41,181 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 23:21:41,181 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 23:21:41,181 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 23:21:41,181 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2021-11-06 23:21:41,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 23:21:41,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 23:21:41,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 23:21:41,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 23:21:41,419 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 23:21:41,419 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2021-11-06 23:21:41,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f622233/25f5a024c805473e86ec627a08371254/FLAGa24c8e26d [2021-11-06 23:21:41,933 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 23:21:41,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2021-11-06 23:21:41,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f622233/25f5a024c805473e86ec627a08371254/FLAGa24c8e26d [2021-11-06 23:21:41,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f622233/25f5a024c805473e86ec627a08371254 [2021-11-06 23:21:41,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 23:21:41,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 23:21:41,975 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 23:21:41,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 23:21:41,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 23:21:41,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:21:41" (1/1) ... [2021-11-06 23:21:41,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12935887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:41, skipping insertion in model container [2021-11-06 23:21:41,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:21:41" (1/1) ... [2021-11-06 23:21:41,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 23:21:42,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 23:21:42,318 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2021-11-06 23:21:42,411 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2021-11-06 23:21:42,415 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2021-11-06 23:21:42,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:21:42,446 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 23:21:42,474 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2021-11-06 23:21:42,512 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2021-11-06 23:21:42,512 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2021-11-06 23:21:42,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:21:42,538 INFO L208 MainTranslator]: Completed translation [2021-11-06 23:21:42,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42 WrapperNode [2021-11-06 23:21:42,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 23:21:42,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 23:21:42,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 23:21:42,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 23:21:42,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 23:21:42,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 23:21:42,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 23:21:42,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 23:21:42,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,626 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 23:21:42,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 23:21:42,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 23:21:42,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 23:21:42,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (1/1) ... [2021-11-06 23:21:42,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:21:42,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:42,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 23:21:42,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 23:21:42,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 23:21:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 23:21:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 23:21:42,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 23:21:42,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 23:21:43,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 23:21:43,496 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-06 23:21:43,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:21:43 BoogieIcfgContainer [2021-11-06 23:21:43,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 23:21:43,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 23:21:43,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 23:21:43,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 23:21:43,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:21:41" (1/3) ... [2021-11-06 23:21:43,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e014045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:21:43, skipping insertion in model container [2021-11-06 23:21:43,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:21:42" (2/3) ... [2021-11-06 23:21:43,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e014045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:21:43, skipping insertion in model container [2021-11-06 23:21:43,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:21:43" (3/3) ... [2021-11-06 23:21:43,503 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-2.i [2021-11-06 23:21:43,506 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 23:21:43,506 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 23:21:43,532 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 23:21:43,535 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 [2021-11-06 23:21:43,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 23:21:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 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) [2021-11-06 23:21:43,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 23:21:43,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:43,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:43,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:43,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:43,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-06 23:21:43,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:43,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687368438] [2021-11-06 23:21:43,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:43,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:21:43,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:43,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687368438] [2021-11-06 23:21:43,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687368438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:43,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:43,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 23:21:43,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518600063] [2021-11-06 23:21:43,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 23:21:43,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 23:21:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:21:43,682 INFO L87 Difference]: Start difference. First operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:21:43,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:43,733 INFO L93 Difference]: Finished difference Result 419 states and 707 transitions. [2021-11-06 23:21:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 23:21:43,735 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-06 23:21:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:43,743 INFO L225 Difference]: With dead ends: 419 [2021-11-06 23:21:43,743 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 23:21:43,746 INFO L786 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 [2021-11-06 23:21:43,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 23:21:43,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 23:21:43,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 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) [2021-11-06 23:21:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-06 23:21:43,781 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-06 23:21:43,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:43,782 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-06 23:21:43,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:21:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-06 23:21:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 23:21:43,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:43,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:43,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 23:21:43,784 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:43,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-06 23:21:43,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:43,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351791649] [2021-11-06 23:21:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:43,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:43,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:21:43,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:43,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351791649] [2021-11-06 23:21:43,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351791649] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:43,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:43,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:21:43,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282967171] [2021-11-06 23:21:43,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:21:43,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:43,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:21:43,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:21:43,865 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:21:44,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:44,110 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2021-11-06 23:21:44,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:21:44,110 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-06 23:21:44,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:44,114 INFO L225 Difference]: With dead ends: 382 [2021-11-06 23:21:44,115 INFO L226 Difference]: Without dead ends: 295 [2021-11-06 23:21:44,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:21:44,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-06 23:21:44,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2021-11-06 23:21:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 178 states have internal predecessors, (234), 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) [2021-11-06 23:21:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-06 23:21:44,130 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-06 23:21:44,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:44,130 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-06 23:21:44,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:21:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-06 23:21:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:21:44,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:44,133 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:44,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 23:21:44,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:44,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-06 23:21:44,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:44,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383131821] [2021-11-06 23:21:44,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:44,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:44,158 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:44,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36006696] [2021-11-06 23:21:44,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:44,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:44,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:44,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:44,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 23:21:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:44,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:21:44,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:44,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:21:44,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:44,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383131821] [2021-11-06 23:21:44,550 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:44,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36006696] [2021-11-06 23:21:44,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36006696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:44,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:44,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:21:44,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008737932] [2021-11-06 23:21:44,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:21:44,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:21:44,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:21:44,552 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-06 23:21:44,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:44,604 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-11-06 23:21:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:21:44,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-06 23:21:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:44,605 INFO L225 Difference]: With dead ends: 375 [2021-11-06 23:21:44,605 INFO L226 Difference]: Without dead ends: 200 [2021-11-06 23:21:44,606 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:21:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-06 23:21:44,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-11-06 23:21:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 1.2893401015228427) internal successors, (254), 198 states have internal predecessors, (254), 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) [2021-11-06 23:21:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-11-06 23:21:44,612 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2021-11-06 23:21:44,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:44,612 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-11-06 23:21:44,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-06 23:21:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-11-06 23:21:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:21:44,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:44,614 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:44,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 23:21:44,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:44,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:44,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:44,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2021-11-06 23:21:44,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:44,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096338349] [2021-11-06 23:21:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:44,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:44,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:44,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409173035] [2021-11-06 23:21:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:44,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:44,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:44,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:44,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 23:21:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:44,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:21:44,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:21:45,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:45,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096338349] [2021-11-06 23:21:45,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:45,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409173035] [2021-11-06 23:21:45,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409173035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:45,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:45,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:21:45,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82820739] [2021-11-06 23:21:45,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:21:45,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:45,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:21:45,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:21:45,112 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-06 23:21:45,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:45,171 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2021-11-06 23:21:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:21:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-06 23:21:45,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:45,172 INFO L225 Difference]: With dead ends: 386 [2021-11-06 23:21:45,172 INFO L226 Difference]: Without dead ends: 191 [2021-11-06 23:21:45,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:21:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-06 23:21:45,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-11-06 23:21:45,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 183 states have (on average 1.273224043715847) internal successors, (233), 184 states have internal predecessors, (233), 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) [2021-11-06 23:21:45,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2021-11-06 23:21:45,194 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2021-11-06 23:21:45,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:45,194 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2021-11-06 23:21:45,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-06 23:21:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2021-11-06 23:21:45,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:21:45,197 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:45,197 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:45,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 23:21:45,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 23:21:45,426 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:45,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:45,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-06 23:21:45,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:45,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121775571] [2021-11-06 23:21:45,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:45,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:45,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:45,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [393510576] [2021-11-06 23:21:45,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:45,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:45,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:45,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:45,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 23:21:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:45,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:21:45,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:21:45,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:45,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121775571] [2021-11-06 23:21:45,869 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:45,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393510576] [2021-11-06 23:21:45,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393510576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:45,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:45,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:21:45,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548232416] [2021-11-06 23:21:45,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:21:45,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:45,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:21:45,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:21:45,871 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-06 23:21:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:45,936 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-11-06 23:21:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:21:45,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-06 23:21:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:45,938 INFO L225 Difference]: With dead ends: 479 [2021-11-06 23:21:45,938 INFO L226 Difference]: Without dead ends: 298 [2021-11-06 23:21:45,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:21:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-06 23:21:45,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2021-11-06 23:21:45,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 290 states have internal predecessors, (366), 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) [2021-11-06 23:21:45,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2021-11-06 23:21:45,943 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2021-11-06 23:21:45,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:45,944 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2021-11-06 23:21:45,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-06 23:21:45,944 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2021-11-06 23:21:45,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 23:21:45,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:45,945 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:45,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 23:21:46,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:46,156 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-06 23:21:46,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:46,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837843473] [2021-11-06 23:21:46,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:46,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:46,168 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:46,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761935160] [2021-11-06 23:21:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:46,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:46,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:46,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:46,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 23:21:46,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:46,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:21:46,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:46,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:21:46,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 23:21:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 23:21:46,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:46,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837843473] [2021-11-06 23:21:46,561 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:46,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761935160] [2021-11-06 23:21:46,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761935160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:46,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:46,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:21:46,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213658781] [2021-11-06 23:21:46,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:21:46,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:21:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:21:46,563 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-11-06 23:21:46,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:46,860 INFO L93 Difference]: Finished difference Result 379 states and 483 transitions. [2021-11-06 23:21:46,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:21:46,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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 69 [2021-11-06 23:21:46,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:46,862 INFO L225 Difference]: With dead ends: 379 [2021-11-06 23:21:46,862 INFO L226 Difference]: Without dead ends: 375 [2021-11-06 23:21:46,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:21:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-06 23:21:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 293. [2021-11-06 23:21:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.2646048109965635) internal successors, (368), 292 states have internal predecessors, (368), 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) [2021-11-06 23:21:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2021-11-06 23:21:46,870 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2021-11-06 23:21:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2021-11-06 23:21:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 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) [2021-11-06 23:21:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2021-11-06 23:21:46,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 23:21:46,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:46,875 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:46,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 23:21:47,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:47,076 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:47,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:47,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2000986198, now seen corresponding path program 1 times [2021-11-06 23:21:47,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:47,076 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185913461] [2021-11-06 23:21:47,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:47,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:47,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:47,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [344538342] [2021-11-06 23:21:47,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:47,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:47,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:47,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 23:21:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:47,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:21:47,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 23:21:47,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:47,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185913461] [2021-11-06 23:21:47,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:47,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344538342] [2021-11-06 23:21:47,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344538342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:47,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:47,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:21:47,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637425565] [2021-11-06 23:21:47,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:21:47,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:21:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:21:47,552 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-06 23:21:47,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:47,603 INFO L93 Difference]: Finished difference Result 483 states and 627 transitions. [2021-11-06 23:21:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:21:47,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 103 [2021-11-06 23:21:47,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:47,606 INFO L225 Difference]: With dead ends: 483 [2021-11-06 23:21:47,606 INFO L226 Difference]: Without dead ends: 335 [2021-11-06 23:21:47,607 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:21:47,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-06 23:21:47,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2021-11-06 23:21:47,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 331 states have (on average 1.2326283987915407) internal successors, (408), 332 states have internal predecessors, (408), 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) [2021-11-06 23:21:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 408 transitions. [2021-11-06 23:21:47,615 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 408 transitions. Word has length 103 [2021-11-06 23:21:47,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:47,617 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 408 transitions. [2021-11-06 23:21:47,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2021-11-06 23:21:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 408 transitions. [2021-11-06 23:21:47,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 23:21:47,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:47,618 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:47,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-06 23:21:47,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:47,853 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:47,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1973776046, now seen corresponding path program 1 times [2021-11-06 23:21:47,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:47,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436671915] [2021-11-06 23:21:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:47,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:47,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:47,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438094409] [2021-11-06 23:21:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:47,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:47,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:47,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 23:21:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:48,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:21:48,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 23:21:48,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:48,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436671915] [2021-11-06 23:21:48,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:48,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438094409] [2021-11-06 23:21:48,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438094409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:48,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:48,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:21:48,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316462128] [2021-11-06 23:21:48,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:21:48,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:48,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:21:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:21:48,300 INFO L87 Difference]: Start difference. First operand 333 states and 408 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2021-11-06 23:21:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:48,347 INFO L93 Difference]: Finished difference Result 498 states and 622 transitions. [2021-11-06 23:21:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:21:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 103 [2021-11-06 23:21:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:48,348 INFO L225 Difference]: With dead ends: 498 [2021-11-06 23:21:48,349 INFO L226 Difference]: Without dead ends: 310 [2021-11-06 23:21:48,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:21:48,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-06 23:21:48,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2021-11-06 23:21:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 303 states have (on average 1.2079207920792079) internal successors, (366), 304 states have internal predecessors, (366), 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) [2021-11-06 23:21:48,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 366 transitions. [2021-11-06 23:21:48,354 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 366 transitions. Word has length 103 [2021-11-06 23:21:48,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:48,355 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 366 transitions. [2021-11-06 23:21:48,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2021-11-06 23:21:48,355 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 366 transitions. [2021-11-06 23:21:48,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 23:21:48,356 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:48,356 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:48,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 23:21:48,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:48,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:48,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1090927200, now seen corresponding path program 1 times [2021-11-06 23:21:48,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:48,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461561205] [2021-11-06 23:21:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:48,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:48,584 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:48,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1105594090] [2021-11-06 23:21:48,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:48,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:48,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:48,607 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:48,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 23:21:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:48,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:21:48,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:21:49,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:49,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461561205] [2021-11-06 23:21:49,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:49,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105594090] [2021-11-06 23:21:49,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105594090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:21:49,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:49,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:21:49,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680081107] [2021-11-06 23:21:49,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:21:49,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:21:49,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:21:49,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:21:49,059 INFO L87 Difference]: Start difference. First operand 305 states and 366 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-11-06 23:21:49,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:21:49,211 INFO L93 Difference]: Finished difference Result 653 states and 790 transitions. [2021-11-06 23:21:49,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:21:49,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-11-06 23:21:49,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:21:49,213 INFO L225 Difference]: With dead ends: 653 [2021-11-06 23:21:49,213 INFO L226 Difference]: Without dead ends: 396 [2021-11-06 23:21:49,214 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:21:49,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-06 23:21:49,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 389. [2021-11-06 23:21:49,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 1.2144702842377262) internal successors, (470), 388 states have internal predecessors, (470), 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) [2021-11-06 23:21:49,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 470 transitions. [2021-11-06 23:21:49,221 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 470 transitions. Word has length 103 [2021-11-06 23:21:49,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:21:49,221 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 470 transitions. [2021-11-06 23:21:49,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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) [2021-11-06 23:21:49,222 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 470 transitions. [2021-11-06 23:21:49,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 23:21:49,222 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:21:49,223 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:49,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-06 23:21:49,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:49,450 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:21:49,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:21:49,450 INFO L85 PathProgramCache]: Analyzing trace with hash 541561274, now seen corresponding path program 1 times [2021-11-06 23:21:49,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:21:49,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794681331] [2021-11-06 23:21:49,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:49,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:21:49,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:21:49,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110573539] [2021-11-06 23:21:49,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:21:49,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:21:49,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:21:49,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:21:49,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 23:21:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:21:49,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-06 23:21:49,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:21:49,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-06 23:21:49,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:21:49,835 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 23:21:49,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 23:21:49,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:49,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:49,887 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 38 treesize of output 29 [2021-11-06 23:21:50,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-06 23:21:50,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,697 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 51 treesize of output 44 [2021-11-06 23:21:50,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 54 [2021-11-06 23:21:50,823 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 40 treesize of output 36 [2021-11-06 23:21:50,840 INFO L354 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2021-11-06 23:21:50,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 4 case distinctions, treesize of input 45 treesize of output 52 [2021-11-06 23:21:50,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:50,857 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 52 treesize of output 45 [2021-11-06 23:21:50,867 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 13 treesize of output 9 [2021-11-06 23:21:52,227 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-06 23:21:52,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2853 treesize of output 2296 [2021-11-06 23:21:52,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:52,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:52,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:21:56,867 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-06 23:21:56,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3322 treesize of output 1825 [2021-11-06 23:21:56,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:21:56,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794681331] [2021-11-06 23:21:56,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:21:56,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110573539] [2021-11-06 23:21:56,909 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-06 23:21:56,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:21:56,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-06 23:21:56,909 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-06 23:21:56,909 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-06 23:21:56,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 23:21:56,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 23:21:56,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-06 23:21:57,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 23:21:57,153 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:21:57,154 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-06 23:21:57,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:21:57 BoogieIcfgContainer [2021-11-06 23:21:57,202 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-06 23:21:57,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-06 23:21:57,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-06 23:21:57,203 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-06 23:21:57,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:21:43" (3/4) ... [2021-11-06 23:21:57,208 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-06 23:21:57,208 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-06 23:21:57,209 INFO L168 Benchmark]: Toolchain (without parser) took 15236.08 ms. Allocated memory was 100.7 MB in the beginning and 195.0 MB in the end (delta: 94.4 MB). Free memory was 62.9 MB in the beginning and 80.7 MB in the end (delta: -17.7 MB). Peak memory consumption was 76.5 MB. Max. memory is 16.1 GB. [2021-11-06 23:21:57,209 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 72.2 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 23:21:57,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.28 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 51.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-06 23:21:57,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.62 ms. Allocated memory is still 100.7 MB. Free memory was 51.8 MB in the beginning and 44.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-06 23:21:57,210 INFO L168 Benchmark]: Boogie Preprocessor took 71.91 ms. Allocated memory is still 100.7 MB. Free memory was 44.6 MB in the beginning and 72.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-11-06 23:21:57,210 INFO L168 Benchmark]: RCFGBuilder took 810.72 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 72.0 MB in the beginning and 68.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. [2021-11-06 23:21:57,211 INFO L168 Benchmark]: TraceAbstraction took 13703.98 ms. Allocated memory was 130.0 MB in the beginning and 195.0 MB in the end (delta: 65.0 MB). Free memory was 68.0 MB in the beginning and 81.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. [2021-11-06 23:21:57,211 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 195.0 MB. Free memory was 81.6 MB in the beginning and 80.7 MB in the end (delta: 898.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 23:21:57,214 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 100.7 MB. Free memory was 72.2 MB in the beginning and 72.2 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 564.28 ms. Allocated memory is still 100.7 MB. Free memory was 62.8 MB in the beginning and 51.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.62 ms. Allocated memory is still 100.7 MB. Free memory was 51.8 MB in the beginning and 44.6 MB in the end (delta: 7.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.91 ms. Allocated memory is still 100.7 MB. Free memory was 44.6 MB in the beginning and 72.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * RCFGBuilder took 810.72 ms. Allocated memory was 100.7 MB in the beginning and 130.0 MB in the end (delta: 29.4 MB). Free memory was 72.0 MB in the beginning and 68.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 45.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13703.98 ms. Allocated memory was 130.0 MB in the beginning and 195.0 MB in the end (delta: 65.0 MB). Free memory was 68.0 MB in the beginning and 81.6 MB in the end (delta: -13.6 MB). Peak memory consumption was 81.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.11 ms. Allocated memory is still 195.0 MB. Free memory was 81.6 MB in the beginning and 80.7 MB in the end (delta: 898.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 730]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 725, overapproximation of bitwiseAnd at line 725. Possible FailurePath: [L713] int i; [L714] example_user_t *user, *tmp, *users=((void *)0); [L715] i=0 [L715] EXPR \read(i) [L715] COND TRUE i<1000 [L716] user = (example_user_t*)malloc(sizeof(example_user_t)) [L717] COND FALSE !(user == ((void *)0)) [L720] EXPR \read(i) [L720] user->id = i [L721] EXPR \read(i) [L721] EXPR \read(i) [L721] user->cookie = i*i [L722] unsigned _ha_hashv; [L722] unsigned _hj_i,_hj_j,_hj_k; [L722] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L722] _ha_hashv = 0xfeedbeefu [L722] EXPR _hj_j = 0x9e3779b9u [L722] _hj_i = _hj_j = 0x9e3779b9u [L722] _hj_k = (unsigned)(sizeof(int)) [L722] COND FALSE !(_hj_k >= 12U) [L722] _ha_hashv += (unsigned)(sizeof(int)) [L722] case 11: [L722] case 10: [L722] case 9: [L722] case 8: [L722] case 7: [L722] case 6: [L722] case 5: [L722] case 4: [L722] EXPR _hj_key[3] [L722] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L722] case 3: [L722] EXPR _hj_key[2] [L722] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L722] case 2: [L722] EXPR _hj_key[1] [L722] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L722] case 1: [L722] EXPR _hj_key[0] [L722] _hj_i += _hj_key[0] [L722] _hj_i -= _hj_j [L722] _hj_i -= _ha_hashv [L722] _hj_i ^= ( _ha_hashv >> 13 ) [L722] _hj_j -= _ha_hashv [L722] _hj_j -= _hj_i [L722] _hj_j ^= ( _hj_i << 8 ) [L722] _ha_hashv -= _hj_i [L722] _ha_hashv -= _hj_j [L722] _ha_hashv ^= ( _hj_j >> 13 ) [L722] _hj_i -= _hj_j [L722] _hj_i -= _ha_hashv [L722] _hj_i ^= ( _ha_hashv >> 12 ) [L722] _hj_j -= _ha_hashv [L722] _hj_j -= _hj_i [L722] _hj_j ^= ( _hj_i << 16 ) [L722] _ha_hashv -= _hj_i [L722] _ha_hashv -= _hj_j [L722] _ha_hashv ^= ( _hj_j >> 5 ) [L722] _hj_i -= _hj_j [L722] _hj_i -= _ha_hashv [L722] _hj_i ^= ( _ha_hashv >> 3 ) [L722] _hj_j -= _ha_hashv [L722] _hj_j -= _hj_i [L722] _hj_j ^= ( _hj_i << 10 ) [L722] _ha_hashv -= _hj_i [L722] _ha_hashv -= _hj_j [L722] _ha_hashv ^= ( _hj_j >> 15 ) [L722] (user)->hh.hashv = (_ha_hashv) [L722] (user)->hh.key = (char*) (&((user)->id)) [L722] (user)->hh.keylen = (unsigned) (sizeof(int)) [L722] COND TRUE !(users) [L722] (user)->hh.next = ((void *)0) [L722] (user)->hh.prev = ((void *)0) [L722] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L722] EXPR (user)->hh.tbl [L722] COND FALSE !(!(user)->hh.tbl) [L722] (user)->hh.tbl [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->tail = &((user)->hh) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->num_buckets = 32U [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->log2_num_buckets = 5U [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->signature = 0xa0111fe1u [L722] EXPR (user)->hh.tbl [L722] EXPR (user)->hh.tbl->buckets [L722] COND FALSE !(!(user)->hh.tbl->buckets) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->buckets [L722] (users) = (user) [L722] unsigned _ha_bkt; [L722] EXPR (users)->hh.tbl [L722] EXPR (users)->hh.tbl->num_items [L722] (users)->hh.tbl->num_items++ [L722] EXPR (users)->hh.tbl [L722] EXPR (users)->hh.tbl->num_buckets [L722] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L722] EXPR (users)->hh.tbl [L722] EXPR (users)->hh.tbl->buckets [L722] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L722] EXPR _ha_head->count [L722] _ha_head->count++ [L722] EXPR _ha_head->hh_head [L722] (&(user)->hh)->hh_next = _ha_head->hh_head [L722] (&(user)->hh)->hh_prev = ((void *)0) [L722] EXPR _ha_head->hh_head [L722] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L722] _ha_head->hh_head = (&(user)->hh) [L722] EXPR _ha_head->count [L722] EXPR _ha_head->expand_mult [L722] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L722] EXPR (&(user)->hh)->tbl [L722] EXPR (&(user)->hh)->tbl->noexpand [L722] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L722] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L715] EXPR \read(i) [L715] i++ [L715] EXPR \read(i) [L715] COND FALSE !(i<1000) [L724] i=0 [L724] EXPR \read(i) [L724] COND TRUE i<1000 [L725] unsigned _hf_hashv; [L725] unsigned _hj_i,_hj_j,_hj_k; [L725] unsigned const char *_hj_key=(unsigned const char*)(&i); [L725] _hf_hashv = 0xfeedbeefu [L725] EXPR _hj_j = 0x9e3779b9u [L725] _hj_i = _hj_j = 0x9e3779b9u [L725] _hj_k = (unsigned)(sizeof(int)) [L725] COND FALSE !(_hj_k >= 12U) [L725] _hf_hashv += (unsigned)(sizeof(int)) [L725] case 11: [L725] case 10: [L725] case 9: [L725] case 8: [L725] case 7: [L725] case 6: [L725] case 5: [L725] case 4: [L725] EXPR _hj_key[3] [L725] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L725] case 3: [L725] EXPR _hj_key[2] [L725] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L725] case 2: [L725] EXPR _hj_key[1] [L725] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L725] case 1: [L725] EXPR _hj_key[0] [L725] _hj_i += _hj_key[0] [L725] _hj_i -= _hj_j [L725] _hj_i -= _hf_hashv [L725] _hj_i ^= ( _hf_hashv >> 13 ) [L725] _hj_j -= _hf_hashv [L725] _hj_j -= _hj_i [L725] _hj_j ^= ( _hj_i << 8 ) [L725] _hf_hashv -= _hj_i [L725] _hf_hashv -= _hj_j [L725] _hf_hashv ^= ( _hj_j >> 13 ) [L725] _hj_i -= _hj_j [L725] _hj_i -= _hf_hashv [L725] _hj_i ^= ( _hf_hashv >> 12 ) [L725] _hj_j -= _hf_hashv [L725] _hj_j -= _hj_i [L725] _hj_j ^= ( _hj_i << 16 ) [L725] _hf_hashv -= _hj_i [L725] _hf_hashv -= _hj_j [L725] _hf_hashv ^= ( _hj_j >> 5 ) [L725] _hj_i -= _hj_j [L725] _hj_i -= _hf_hashv [L725] _hj_i ^= ( _hf_hashv >> 3 ) [L725] _hj_j -= _hf_hashv [L725] _hj_j -= _hj_i [L725] _hj_j ^= ( _hj_i << 10 ) [L725] _hf_hashv -= _hj_i [L725] _hf_hashv -= _hj_j [L725] _hf_hashv ^= ( _hj_j >> 15 ) [L725] (tmp) = ((void *)0) [L725] COND TRUE \read(*users) [L725] unsigned _hf_bkt; [L725] EXPR (users)->hh.tbl [L725] EXPR (users)->hh.tbl->num_buckets [L725] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L725] EXPR (users)->hh.tbl [L725] EXPR (users)->hh.tbl->buckets [L725] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L725] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L725] (tmp) = ((void *)0) [L725] COND FALSE !((tmp) != ((void *)0)) [L726] COND FALSE !(tmp != ((void *)0)) [L730] reach_error() - UnprovableResult [Line: 734]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 211 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 13.6s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2008 SDtfs, 1143 SDslu, 1958 SDs, 0 SdLazy, 561 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=9, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 226 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 692 NumberOfCodeBlocks, 692 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 573 ConstructedInterpolants, 0 QuantifiedInterpolants, 1106 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2243 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-06 23:21:57,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 23:21:58,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 23:21:58,992 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 23:21:59,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 23:21:59,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 23:21:59,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 23:21:59,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 23:21:59,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 23:21:59,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 23:21:59,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 23:21:59,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 23:21:59,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 23:21:59,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 23:21:59,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 23:21:59,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 23:21:59,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 23:21:59,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 23:21:59,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 23:21:59,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 23:21:59,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 23:21:59,050 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 23:21:59,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 23:21:59,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 23:21:59,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 23:21:59,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 23:21:59,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 23:21:59,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 23:21:59,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 23:21:59,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 23:21:59,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 23:21:59,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 23:21:59,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 23:21:59,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 23:21:59,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 23:21:59,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 23:21:59,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 23:21:59,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 23:21:59,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 23:21:59,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 23:21:59,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 23:21:59,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 23:21:59,070 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-06 23:21:59,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 23:21:59,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 23:21:59,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 23:21:59,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 23:21:59,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 23:21:59,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 23:21:59,117 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 23:21:59,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 23:21:59,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 23:21:59,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 23:21:59,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 23:21:59,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 23:21:59,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 23:21:59,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 23:21:59,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 23:21:59,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 23:21:59,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:21:59,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 23:21:59,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 23:21:59,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 23:21:59,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 23:21:59,121 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8d40fc3d39b827c494ff373d43bd116589a8fd89c6e972621bd6e0216b2f6d [2021-11-06 23:21:59,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 23:21:59,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 23:21:59,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 23:21:59,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 23:21:59,389 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 23:21:59,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2021-11-06 23:21:59,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8e4f341/875873650cf94d528a862d25a37358e7/FLAGc32ff7ad9 [2021-11-06 23:21:59,804 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 23:21:59,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i [2021-11-06 23:21:59,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8e4f341/875873650cf94d528a862d25a37358e7/FLAGc32ff7ad9 [2021-11-06 23:22:00,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8e4f341/875873650cf94d528a862d25a37358e7 [2021-11-06 23:22:00,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 23:22:00,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 23:22:00,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 23:22:00,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 23:22:00,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 23:22:00,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77daf25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00, skipping insertion in model container [2021-11-06 23:22:00,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 23:22:00,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 23:22:00,596 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2021-11-06 23:22:00,687 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2021-11-06 23:22:00,688 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2021-11-06 23:22:00,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:22:00,706 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 23:22:00,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[33021,33034] [2021-11-06 23:22:00,790 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44124,44137] [2021-11-06 23:22:00,791 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test7-2.i[44245,44258] [2021-11-06 23:22:00,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:22:00,846 INFO L208 MainTranslator]: Completed translation [2021-11-06 23:22:00,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00 WrapperNode [2021-11-06 23:22:00,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 23:22:00,848 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 23:22:00,848 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 23:22:00,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 23:22:00,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 23:22:00,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 23:22:00,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 23:22:00,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 23:22:00,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:00,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:01,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:01,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:01,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:01,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 23:22:01,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 23:22:01,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 23:22:01,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 23:22:01,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (1/1) ... [2021-11-06 23:22:01,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:22:01,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:22:01,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 23:22:01,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 23:22:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 23:22:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-06 23:22:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 23:22:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 23:22:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 23:22:01,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 23:22:05,207 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 23:22:05,209 INFO L299 CfgBuilder]: Removed 82 assume(true) statements. [2021-11-06 23:22:05,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:22:05 BoogieIcfgContainer [2021-11-06 23:22:05,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 23:22:05,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 23:22:05,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 23:22:05,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 23:22:05,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:22:00" (1/3) ... [2021-11-06 23:22:05,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b96423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:22:05, skipping insertion in model container [2021-11-06 23:22:05,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:22:00" (2/3) ... [2021-11-06 23:22:05,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b96423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:22:05, skipping insertion in model container [2021-11-06 23:22:05,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:22:05" (3/3) ... [2021-11-06 23:22:05,221 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test7-2.i [2021-11-06 23:22:05,225 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 23:22:05,225 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 23:22:05,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 23:22:05,260 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 [2021-11-06 23:22:05,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 23:22:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 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) [2021-11-06 23:22:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 23:22:05,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:05,277 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:05,277 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:05,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:05,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-06 23:22:05,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:05,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903187601] [2021-11-06 23:22:05,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:05,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:05,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:05,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:05,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-06 23:22:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:05,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-06 23:22:05,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:05,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:05,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:05,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:05,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903187601] [2021-11-06 23:22:05,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903187601] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:05,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:05,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 23:22:05,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164393047] [2021-11-06 23:22:05,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 23:22:05,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:05,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 23:22:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:22:05,518 INFO L87 Difference]: Start difference. First operand has 211 states, 208 states have (on average 1.7067307692307692) internal successors, (355), 210 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:22:05,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:05,552 INFO L93 Difference]: Finished difference Result 419 states and 707 transitions. [2021-11-06 23:22:05,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 23:22:05,553 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-06 23:22:05,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:05,569 INFO L225 Difference]: With dead ends: 419 [2021-11-06 23:22:05,569 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 23:22:05,572 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:22:05,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 23:22:05,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 23:22:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 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) [2021-11-06 23:22:05,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-06 23:22:05,606 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-06 23:22:05,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:05,606 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-06 23:22:05,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:22:05,606 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-06 23:22:05,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 23:22:05,607 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:05,607 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:05,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:05,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:05,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:05,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-06 23:22:05,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:05,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347247538] [2021-11-06 23:22:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:05,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:05,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:05,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:05,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-06 23:22:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:05,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:22:05,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:05,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:22:05,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 23:22:06,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:06,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:06,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:06,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:06,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347247538] [2021-11-06 23:22:06,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347247538] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:06,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:06,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 23:22:06,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808704512] [2021-11-06 23:22:06,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 23:22:06,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:06,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 23:22:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:22:06,079 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:22:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:08,183 INFO L93 Difference]: Finished difference Result 468 states and 614 transitions. [2021-11-06 23:22:08,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 23:22:08,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-06 23:22:08,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:08,186 INFO L225 Difference]: With dead ends: 468 [2021-11-06 23:22:08,186 INFO L226 Difference]: Without dead ends: 381 [2021-11-06 23:22:08,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 23:22:08,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-06 23:22:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 179. [2021-11-06 23:22:08,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 178 states have internal predecessors, (234), 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) [2021-11-06 23:22:08,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-06 23:22:08,197 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-06 23:22:08,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:08,197 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-06 23:22:08,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:22:08,198 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-06 23:22:08,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:22:08,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:08,199 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:08,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:08,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:08,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-06 23:22:08,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:08,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820276763] [2021-11-06 23:22:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:08,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:08,411 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:08,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-06 23:22:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:08,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:22:08,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:08,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:08,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:08,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820276763] [2021-11-06 23:22:08,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820276763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:08,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:08,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-06 23:22:08,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540011701] [2021-11-06 23:22:08,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:22:08,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:22:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:22:08,894 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-06 23:22:09,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:09,001 INFO L93 Difference]: Finished difference Result 363 states and 476 transitions. [2021-11-06 23:22:09,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:22:09,010 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 62 [2021-11-06 23:22:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:09,011 INFO L225 Difference]: With dead ends: 363 [2021-11-06 23:22:09,011 INFO L226 Difference]: Without dead ends: 188 [2021-11-06 23:22:09,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:22:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-06 23:22:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2021-11-06 23:22:09,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.2722222222222221) internal successors, (229), 181 states have internal predecessors, (229), 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) [2021-11-06 23:22:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2021-11-06 23:22:09,025 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 62 [2021-11-06 23:22:09,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:09,025 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2021-11-06 23:22:09,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-06 23:22:09,026 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2021-11-06 23:22:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:22:09,027 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:09,027 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:09,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:09,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:09,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:09,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-06 23:22:09,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:09,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1112135883] [2021-11-06 23:22:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:09,240 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:09,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:09,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:09,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-06 23:22:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:09,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:22:09,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:09,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:10,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:10,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1112135883] [2021-11-06 23:22:10,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1112135883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:10,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:10,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 23:22:10,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578284912] [2021-11-06 23:22:10,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:22:10,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:10,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:22:10,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:22:10,126 INFO L87 Difference]: Start difference. First operand 182 states and 229 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-06 23:22:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:10,891 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2021-11-06 23:22:10,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:22:10,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62 [2021-11-06 23:22:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:10,893 INFO L225 Difference]: With dead ends: 470 [2021-11-06 23:22:10,893 INFO L226 Difference]: Without dead ends: 292 [2021-11-06 23:22:10,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:22:10,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-06 23:22:10,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 285. [2021-11-06 23:22:10,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 283 states have (on average 1.265017667844523) internal successors, (358), 284 states have internal predecessors, (358), 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) [2021-11-06 23:22:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2021-11-06 23:22:10,902 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 62 [2021-11-06 23:22:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:10,902 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2021-11-06 23:22:10,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2021-11-06 23:22:10,902 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2021-11-06 23:22:10,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 23:22:10,903 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:10,904 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:10,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:11,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:11,119 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:11,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-06 23:22:11,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:11,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991078568] [2021-11-06 23:22:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:11,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:11,122 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:11,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-06 23:22:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:11,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:22:11,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:11,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:22:11,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:11,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991078568] [2021-11-06 23:22:11,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991078568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:11,641 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:11,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 23:22:11,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575861577] [2021-11-06 23:22:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:22:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:22:11,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:22:11,642 INFO L87 Difference]: Start difference. First operand 285 states and 358 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-06 23:22:11,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:11,695 INFO L93 Difference]: Finished difference Result 528 states and 673 transitions. [2021-11-06 23:22:11,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:22:11,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 69 [2021-11-06 23:22:11,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:11,697 INFO L225 Difference]: With dead ends: 528 [2021-11-06 23:22:11,697 INFO L226 Difference]: Without dead ends: 288 [2021-11-06 23:22:11,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:22:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-06 23:22:11,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-06 23:22:11,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 286 states have (on average 1.2622377622377623) internal successors, (361), 287 states have internal predecessors, (361), 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) [2021-11-06 23:22:11,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions. [2021-11-06 23:22:11,705 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 69 [2021-11-06 23:22:11,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:11,705 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 361 transitions. [2021-11-06 23:22:11,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2021-11-06 23:22:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions. [2021-11-06 23:22:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 23:22:11,706 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:11,706 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:11,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-06 23:22:11,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:11,918 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:11,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:11,918 INFO L85 PathProgramCache]: Analyzing trace with hash 982130832, now seen corresponding path program 1 times [2021-11-06 23:22:11,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:11,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929118648] [2021-11-06 23:22:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:11,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:11,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:11,920 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:11,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-06 23:22:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:12,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:22:12,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 23:22:12,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 23:22:12,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:12,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929118648] [2021-11-06 23:22:12,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929118648] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:22:12,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:22:12,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-06 23:22:12,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064455764] [2021-11-06 23:22:12,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 23:22:12,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:12,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 23:22:12,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 23:22:12,517 INFO L87 Difference]: Start difference. First operand 288 states and 361 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-06 23:22:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:12,712 INFO L93 Difference]: Finished difference Result 537 states and 685 transitions. [2021-11-06 23:22:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 23:22:12,718 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 72 [2021-11-06 23:22:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:12,720 INFO L225 Difference]: With dead ends: 537 [2021-11-06 23:22:12,720 INFO L226 Difference]: Without dead ends: 294 [2021-11-06 23:22:12,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-06 23:22:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-06 23:22:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-06 23:22:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.2568493150684932) internal successors, (367), 293 states have internal predecessors, (367), 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) [2021-11-06 23:22:12,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2021-11-06 23:22:12,733 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 72 [2021-11-06 23:22:12,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:12,734 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2021-11-06 23:22:12,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-11-06 23:22:12,734 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2021-11-06 23:22:12,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 23:22:12,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:12,738 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:12,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-06 23:22:12,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:12,950 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:12,951 INFO L85 PathProgramCache]: Analyzing trace with hash 2058438736, now seen corresponding path program 2 times [2021-11-06 23:22:12,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:12,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962219156] [2021-11-06 23:22:12,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:22:12,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:12,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:12,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-06 23:22:13,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:22:13,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:22:13,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:22:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:13,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:22:13,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 23:22:13,329 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 23:22:13,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 23:22:13,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:13,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962219156] [2021-11-06 23:22:13,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962219156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:13,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:13,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 23:22:13,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836189641] [2021-11-06 23:22:13,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 23:22:13,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:13,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 23:22:13,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:22:13,490 INFO L87 Difference]: Start difference. First operand 294 states and 367 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2021-11-06 23:22:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:18,466 INFO L93 Difference]: Finished difference Result 448 states and 571 transitions. [2021-11-06 23:22:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 23:22:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 78 [2021-11-06 23:22:18,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:18,469 INFO L225 Difference]: With dead ends: 448 [2021-11-06 23:22:18,469 INFO L226 Difference]: Without dead ends: 444 [2021-11-06 23:22:18,469 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 23:22:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-06 23:22:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 365. [2021-11-06 23:22:18,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 1.2754820936639117) internal successors, (463), 364 states have internal predecessors, (463), 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) [2021-11-06 23:22:18,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 463 transitions. [2021-11-06 23:22:18,479 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 463 transitions. Word has length 78 [2021-11-06 23:22:18,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:18,479 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 463 transitions. [2021-11-06 23:22:18,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2021-11-06 23:22:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 463 transitions. [2021-11-06 23:22:18,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 23:22:18,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:18,483 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:18,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:18,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:18,694 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:18,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1224331210, now seen corresponding path program 1 times [2021-11-06 23:22:18,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:18,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860367968] [2021-11-06 23:22:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:18,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:18,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:18,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-06 23:22:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:19,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 23:22:19,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 23:22:19,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 23:22:19,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:19,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860367968] [2021-11-06 23:22:19,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860367968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:22:19,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:22:19,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-06 23:22:19,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442715255] [2021-11-06 23:22:19,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 23:22:19,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 23:22:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 23:22:19,802 INFO L87 Difference]: Start difference. First operand 365 states and 463 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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) [2021-11-06 23:22:21,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:21,068 INFO L93 Difference]: Finished difference Result 697 states and 901 transitions. [2021-11-06 23:22:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 23:22:21,077 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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 112 [2021-11-06 23:22:21,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:21,079 INFO L225 Difference]: With dead ends: 697 [2021-11-06 23:22:21,079 INFO L226 Difference]: Without dead ends: 377 [2021-11-06 23:22:21,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-06 23:22:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-06 23:22:21,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-06 23:22:21,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 375 states have (on average 1.2666666666666666) internal successors, (475), 376 states have internal predecessors, (475), 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) [2021-11-06 23:22:21,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 475 transitions. [2021-11-06 23:22:21,089 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 475 transitions. Word has length 112 [2021-11-06 23:22:21,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:21,090 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 475 transitions. [2021-11-06 23:22:21,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 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) [2021-11-06 23:22:21,091 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 475 transitions. [2021-11-06 23:22:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 23:22:21,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:21,092 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:21,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:21,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:21,305 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:21,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:21,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2016870474, now seen corresponding path program 2 times [2021-11-06 23:22:21,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:21,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378065960] [2021-11-06 23:22:21,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:22:21,306 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:21,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:21,307 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:21,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-06 23:22:21,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:22:21,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:22:21,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:22:21,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-06 23:22:21,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-06 23:22:22,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:22,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378065960] [2021-11-06 23:22:22,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378065960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:22,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:22,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-06 23:22:22,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480135044] [2021-11-06 23:22:22,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:22:22,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:22,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:22:22,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:22:22,038 INFO L87 Difference]: Start difference. First operand 377 states and 475 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-06 23:22:22,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:22,115 INFO L93 Difference]: Finished difference Result 603 states and 784 transitions. [2021-11-06 23:22:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:22:22,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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 124 [2021-11-06 23:22:22,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:22,117 INFO L225 Difference]: With dead ends: 603 [2021-11-06 23:22:22,117 INFO L226 Difference]: Without dead ends: 389 [2021-11-06 23:22:22,117 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:22:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-06 23:22:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2021-11-06 23:22:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 384 states have (on average 1.1979166666666667) internal successors, (460), 385 states have internal predecessors, (460), 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) [2021-11-06 23:22:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 460 transitions. [2021-11-06 23:22:22,124 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 460 transitions. Word has length 124 [2021-11-06 23:22:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:22,125 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 460 transitions. [2021-11-06 23:22:22,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-06 23:22:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 460 transitions. [2021-11-06 23:22:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 23:22:22,126 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:22,126 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:22,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:22,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:22,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:22,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:22,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1333208362, now seen corresponding path program 1 times [2021-11-06 23:22:22,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:22,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174361352] [2021-11-06 23:22:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:22,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:22,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:22,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:22,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-06 23:22:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:22,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 23:22:22,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 23:22:23,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:24,421 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 23:22:24,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:24,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174361352] [2021-11-06 23:22:24,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174361352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:22:24,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:22:24,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-06 23:22:24,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495111915] [2021-11-06 23:22:24,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-06 23:22:24,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:24,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-06 23:22:24,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-06 23:22:24,423 INFO L87 Difference]: Start difference. First operand 386 states and 460 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) [2021-11-06 23:22:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:33,151 INFO L93 Difference]: Finished difference Result 751 states and 919 transitions. [2021-11-06 23:22:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-06 23:22:33,168 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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 124 [2021-11-06 23:22:33,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:33,169 INFO L225 Difference]: With dead ends: 751 [2021-11-06 23:22:33,169 INFO L226 Difference]: Without dead ends: 410 [2021-11-06 23:22:33,170 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-06 23:22:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-06 23:22:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-06 23:22:33,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.1862745098039216) internal successors, (484), 409 states have internal predecessors, (484), 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) [2021-11-06 23:22:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 484 transitions. [2021-11-06 23:22:33,179 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 484 transitions. Word has length 124 [2021-11-06 23:22:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:33,180 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 484 transitions. [2021-11-06 23:22:33,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 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) [2021-11-06 23:22:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 484 transitions. [2021-11-06 23:22:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 23:22:33,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:33,181 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:33,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-06 23:22:33,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:33,394 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:33,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:33,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2039593942, now seen corresponding path program 2 times [2021-11-06 23:22:33,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:33,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87372247] [2021-11-06 23:22:33,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:22:33,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:33,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:33,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:33,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-06 23:22:33,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:22:33,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:22:33,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:22:33,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:34,085 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-06 23:22:34,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-06 23:22:34,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:34,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87372247] [2021-11-06 23:22:34,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87372247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:22:34,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:22:34,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 5 [2021-11-06 23:22:34,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238322452] [2021-11-06 23:22:34,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:22:34,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:34,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:22:34,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:22:34,318 INFO L87 Difference]: Start difference. First operand 410 states and 484 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-11-06 23:22:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:22:34,395 INFO L93 Difference]: Finished difference Result 611 states and 731 transitions. [2021-11-06 23:22:34,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:22:34,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 148 [2021-11-06 23:22:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:22:34,397 INFO L225 Difference]: With dead ends: 611 [2021-11-06 23:22:34,397 INFO L226 Difference]: Without dead ends: 413 [2021-11-06 23:22:34,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:22:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-06 23:22:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2021-11-06 23:22:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.1642156862745099) internal successors, (475), 409 states have internal predecessors, (475), 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) [2021-11-06 23:22:34,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 475 transitions. [2021-11-06 23:22:34,407 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 475 transitions. Word has length 148 [2021-11-06 23:22:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:22:34,407 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 475 transitions. [2021-11-06 23:22:34,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2021-11-06 23:22:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 475 transitions. [2021-11-06 23:22:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 23:22:34,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:22:34,408 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:22:34,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-06 23:22:34,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:22:34,618 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:22:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:22:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207916, now seen corresponding path program 1 times [2021-11-06 23:22:34,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:22:34,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807544002] [2021-11-06 23:22:34,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:22:34,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:22:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:22:34,620 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:22:34,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-06 23:22:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:22:35,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-06 23:22:35,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:22:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-06 23:22:36,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:22:38,796 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-06 23:22:38,797 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:22:38,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807544002] [2021-11-06 23:22:38,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807544002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:22:38,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:22:38,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-06 23:22:38,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897793918] [2021-11-06 23:22:38,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-06 23:22:38,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:22:38,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-06 23:22:38,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-06 23:22:38,808 INFO L87 Difference]: Start difference. First operand 410 states and 475 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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) [2021-11-06 23:23:41,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:23:41,138 INFO L93 Difference]: Finished difference Result 805 states and 961 transitions. [2021-11-06 23:23:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-06 23:23:41,139 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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 148 [2021-11-06 23:23:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:23:41,140 INFO L225 Difference]: With dead ends: 805 [2021-11-06 23:23:41,141 INFO L226 Difference]: Without dead ends: 440 [2021-11-06 23:23:41,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-06 23:23:41,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-06 23:23:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-11-06 23:23:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 438 states have (on average 1.1529680365296804) internal successors, (505), 439 states have internal predecessors, (505), 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) [2021-11-06 23:23:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 505 transitions. [2021-11-06 23:23:41,154 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 505 transitions. Word has length 148 [2021-11-06 23:23:41,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:23:41,155 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 505 transitions. [2021-11-06 23:23:41,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 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) [2021-11-06 23:23:41,155 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 505 transitions. [2021-11-06 23:23:41,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 23:23:41,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:23:41,156 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:23:41,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-06 23:23:41,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:23:41,372 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:23:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:23:41,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843980, now seen corresponding path program 2 times [2021-11-06 23:23:41,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:23:41,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456080844] [2021-11-06 23:23:41,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:23:41,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:23:41,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:23:41,378 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:23:41,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-06 23:23:42,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 23:23:42,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:23:42,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-06 23:23:42,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:23:43,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:23:43,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:23:46,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:23:46,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:23:46,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456080844] [2021-11-06 23:23:46,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456080844] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:23:46,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:23:46,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-06 23:23:46,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847453924] [2021-11-06 23:23:46,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-06 23:23:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:23:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-06 23:23:46,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 23:23:46,943 INFO L87 Difference]: Start difference. First operand 440 states and 505 transitions. Second operand has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 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) [2021-11-06 23:24:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:24:56,887 INFO L93 Difference]: Finished difference Result 868 states and 1027 transitions. [2021-11-06 23:24:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-06 23:24:56,888 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 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 178 [2021-11-06 23:24:56,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:24:56,890 INFO L225 Difference]: With dead ends: 868 [2021-11-06 23:24:56,890 INFO L226 Difference]: Without dead ends: 473 [2021-11-06 23:24:56,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-06 23:24:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-06 23:24:56,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-11-06 23:24:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1422505307855626) internal successors, (538), 472 states have internal predecessors, (538), 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) [2021-11-06 23:24:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 538 transitions. [2021-11-06 23:24:56,909 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 538 transitions. Word has length 178 [2021-11-06 23:24:56,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:24:56,910 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 538 transitions. [2021-11-06 23:24:56,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 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) [2021-11-06 23:24:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 538 transitions. [2021-11-06 23:24:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 23:24:56,911 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:24:56,912 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:24:56,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-06 23:24:57,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:24:57,135 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:24:57,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:24:57,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1145284768, now seen corresponding path program 3 times [2021-11-06 23:24:57,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:24:57,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [994380565] [2021-11-06 23:24:57,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 23:24:57,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:24:57,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:24:57,139 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:24:57,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-06 23:24:57,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 23:24:57,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:24:57,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:24:57,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:24:58,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-06 23:24:58,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:24:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-06 23:24:58,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:24:58,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [994380565] [2021-11-06 23:24:58,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [994380565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:24:58,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:24:58,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-06 23:24:58,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120688219] [2021-11-06 23:24:58,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:24:58,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:24:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:24:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:24:58,726 INFO L87 Difference]: Start difference. First operand 473 states and 538 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-06 23:25:01,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:25:01,508 INFO L93 Difference]: Finished difference Result 983 states and 1122 transitions. [2021-11-06 23:25:01,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:25:01,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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 211 [2021-11-06 23:25:01,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:25:01,511 INFO L225 Difference]: With dead ends: 983 [2021-11-06 23:25:01,511 INFO L226 Difference]: Without dead ends: 555 [2021-11-06 23:25:01,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:25:01,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-06 23:25:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 548. [2021-11-06 23:25:01,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 546 states have (on average 1.1446886446886446) internal successors, (625), 547 states have internal predecessors, (625), 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) [2021-11-06 23:25:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 625 transitions. [2021-11-06 23:25:01,535 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 625 transitions. Word has length 211 [2021-11-06 23:25:01,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:25:01,536 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 625 transitions. [2021-11-06 23:25:01,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2021-11-06 23:25:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 625 transitions. [2021-11-06 23:25:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-06 23:25:01,537 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:25:01,537 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:25:01,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-06 23:25:01,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:25:01,750 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:25:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:25:01,750 INFO L85 PathProgramCache]: Analyzing trace with hash 670931834, now seen corresponding path program 1 times [2021-11-06 23:25:01,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:25:01,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241516786] [2021-11-06 23:25:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:25:01,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:25:01,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:25:01,752 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:25:01,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-06 23:25:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:25:03,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-06 23:25:03,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:25:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:25:06,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:25:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:25:17,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:25:17,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241516786] [2021-11-06 23:25:17,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241516786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:25:17,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:25:17,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-06 23:25:17,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201293116] [2021-11-06 23:25:17,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-06 23:25:17,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:25:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-06 23:25:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-06 23:25:17,848 INFO L87 Difference]: Start difference. First operand 548 states and 625 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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) [2021-11-06 23:29:06,049 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 184 [2021-11-06 23:29:08,165 WARN L860 $PredicateComparison]: unable to prove that (and (bvult (bvadd (_ bv29 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv50 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv53 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv14 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv1 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv24 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv6 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv39 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv26 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv54 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv55 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv20 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv36 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv2 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv59 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv48 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv38 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv46 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv18 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv7 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv45 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv28 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv23 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv33 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv58 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv32 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv41 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv8 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv19 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv4 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv35 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv34 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv42 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv47 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv37 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv57 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv44 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv52 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv13 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv16 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv56 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv30 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv12 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv10 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv21 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv3 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv43 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv51 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv9 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv15 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv5 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv11 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv25 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv27 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv49 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv22 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278| (_ bv40 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv31 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv17 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr278|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|)) is different from true [2021-11-06 23:30:38,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:30:38,116 INFO L93 Difference]: Finished difference Result 1003 states and 1217 transitions. [2021-11-06 23:30:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-06 23:30:38,117 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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 218 [2021-11-06 23:30:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:30:38,119 INFO L225 Difference]: With dead ends: 1003 [2021-11-06 23:30:38,119 INFO L226 Difference]: Without dead ends: 614 [2021-11-06 23:30:38,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1933 ImplicationChecksByTransitivity, 214.1s TimeCoverageRelationStatistics Valid=12746, Invalid=25087, Unknown=1, NotChecked=386, Total=38220 [2021-11-06 23:30:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-06 23:30:38,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-11-06 23:30:38,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 612 states have (on average 1.1290849673202614) internal successors, (691), 613 states have internal predecessors, (691), 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) [2021-11-06 23:30:38,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 691 transitions. [2021-11-06 23:30:38,166 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 691 transitions. Word has length 218 [2021-11-06 23:30:38,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:30:38,166 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 691 transitions. [2021-11-06 23:30:38,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 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) [2021-11-06 23:30:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 691 transitions. [2021-11-06 23:30:38,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-06 23:30:38,167 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:30:38,168 INFO L513 BasicCegarLoop]: trace histogram [130, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:30:38,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-06 23:30:38,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:30:38,384 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:30:38,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:30:38,385 INFO L85 PathProgramCache]: Analyzing trace with hash 249759226, now seen corresponding path program 2 times [2021-11-06 23:30:38,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:30:38,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952198544] [2021-11-06 23:30:38,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:30:38,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:30:38,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:30:38,387 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:30:38,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-06 23:30:40,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 23:30:40,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:30:40,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-06 23:30:40,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:30:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:30:50,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:31:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:31:35,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:31:35,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952198544] [2021-11-06 23:31:35,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952198544] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:31:35,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:31:35,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 264 [2021-11-06 23:31:35,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333295953] [2021-11-06 23:31:35,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2021-11-06 23:31:35,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:31:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2021-11-06 23:31:35,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17686, Invalid=51746, Unknown=0, NotChecked=0, Total=69432 [2021-11-06 23:31:35,818 INFO L87 Difference]: Start difference. First operand 614 states and 691 transitions. Second operand has 264 states, 264 states have (on average 1.4128787878787878) internal successors, (373), 264 states have internal predecessors, (373), 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) Killed by 15