./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.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_BER_test7-1.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 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:37:00,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:37:00,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:37:00,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:37:00,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:37:00,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:37:00,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:37:00,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:37:00,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:37:00,422 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:37:00,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:37:00,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:37:00,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:37:00,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:37:00,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:37:00,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:37:00,432 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:37:00,433 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:37:00,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:37:00,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:37:00,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:37:00,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:37:00,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:37:00,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:37:00,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:37:00,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:37:00,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:37:00,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:37:00,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:37:00,453 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:37:00,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:37:00,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:37:00,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:37:00,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:37:00,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:37:00,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:37:00,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:37:00,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:37:00,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:37:00,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:37:00,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:37:00,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 22:37:00,499 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:37:00,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:37:00,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:37:00,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:37:00,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:37:00,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:37:00,502 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:37:00,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:37:00,503 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:37:00,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 22:37:00,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:37:00,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:37:00,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:37:00,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:37:00,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:37:00,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:37:00,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:37:00,505 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:37:00,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:37:00,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:37:00,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:37:00,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:37:00,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:37:00,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:37:00,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:37:00,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:37:00,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 22:37:00,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 22:37:00,507 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:37:00,507 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:37:00,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:37:00,508 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:37:00,508 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-11-06 22:37:00,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:37:00,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:37:00,748 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:37:00,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:37:00,750 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:37:00,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-06 22:37:00,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/418702d61/7b8a159c420e46a9b6e0d5fdfd6d4cfa/FLAG960440e86 [2021-11-06 22:37:01,332 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:37:01,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-06 22:37:01,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/418702d61/7b8a159c420e46a9b6e0d5fdfd6d4cfa/FLAG960440e86 [2021-11-06 22:37:01,649 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/418702d61/7b8a159c420e46a9b6e0d5fdfd6d4cfa [2021-11-06 22:37:01,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:37:01,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:37:01,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:37:01,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:37:01,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:37:01,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:01" (1/1) ... [2021-11-06 22:37:01,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f383f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:01, skipping insertion in model container [2021-11-06 22:37:01,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:01" (1/1) ... [2021-11-06 22:37:01,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:37:01,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:37:02,056 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_BER_test7-1.i[33021,33034] [2021-11-06 22:37:02,175 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_BER_test7-1.i[44124,44137] [2021-11-06 22:37:02,179 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_BER_test7-1.i[44245,44258] [2021-11-06 22:37:02,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:37:02,196 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:37:02,226 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_BER_test7-1.i[33021,33034] [2021-11-06 22:37:02,266 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_BER_test7-1.i[44124,44137] [2021-11-06 22:37:02,267 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_BER_test7-1.i[44245,44258] [2021-11-06 22:37:02,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:37:02,300 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:37:02,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02 WrapperNode [2021-11-06 22:37:02,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:37:02,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:37:02,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:37:02,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:37:02,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:37:02,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:37:02,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:37:02,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:37:02,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:37:02,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:37:02,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:37:02,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:37:02,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (1/1) ... [2021-11-06 22:37:02,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:37:02,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:02,516 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 22:37:02,522 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 22:37:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 22:37:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 22:37:02,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:37:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:37:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:37:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 22:37:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:37:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:37:02,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 22:37:02,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:37:02,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:37:03,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:37:03,531 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-06 22:37:03,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:03 BoogieIcfgContainer [2021-11-06 22:37:03,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:37:03,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:37:03,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:37:03,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:37:03,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:37:01" (1/3) ... [2021-11-06 22:37:03,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d33cae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:37:03, skipping insertion in model container [2021-11-06 22:37:03,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:02" (2/3) ... [2021-11-06 22:37:03,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d33cae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:37:03, skipping insertion in model container [2021-11-06 22:37:03,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:03" (3/3) ... [2021-11-06 22:37:03,541 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-11-06 22:37:03,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:37:03,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 22:37:03,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:37:03,589 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 22:37:03,589 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 22:37:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 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 22:37:03,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:37:03,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:03,617 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:37:03,617 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:03,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-06 22:37:03,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:03,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138468854] [2021-11-06 22:37:03,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:03,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:03,790 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 22:37:03,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:03,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138468854] [2021-11-06 22:37:03,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138468854] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:03,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:03,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 22:37:03,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333466397] [2021-11-06 22:37:03,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:37:03,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:37:03,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:37:03,816 INFO L87 Difference]: Start difference. First operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 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 22:37:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:03,857 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-11-06 22:37:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:37:03,859 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 22:37:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:03,867 INFO L225 Difference]: With dead ends: 361 [2021-11-06 22:37:03,867 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 22:37:03,870 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 22:37:03,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 22:37:03,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 22:37:03,909 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 22:37:03,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-06 22:37:03,912 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-06 22:37:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:03,915 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-06 22:37:03,915 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 22:37:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-06 22:37:03,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 22:37:03,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:03,916 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:37:03,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 22:37:03,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-06 22:37:03,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:03,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598716890] [2021-11-06 22:37:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:03,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:03,995 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 22:37:03,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:03,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598716890] [2021-11-06 22:37:03,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598716890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:03,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:03,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:37:03,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791384866] [2021-11-06 22:37:03,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:37:03,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:04,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:37:04,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:37:04,002 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 22:37:04,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:04,388 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2021-11-06 22:37:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:04,389 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 22:37:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:04,391 INFO L225 Difference]: With dead ends: 382 [2021-11-06 22:37:04,391 INFO L226 Difference]: Without dead ends: 295 [2021-11-06 22:37:04,392 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 22:37:04,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-06 22:37:04,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2021-11-06 22:37:04,413 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 22:37:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-06 22:37:04,414 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-06 22:37:04,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:04,414 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-06 22:37:04,414 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 22:37:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-06 22:37:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 22:37:04,416 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:04,416 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 22:37:04,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 22:37:04,416 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:04,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-06 22:37:04,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:04,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886654946] [2021-11-06 22:37:04,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:04,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:04,444 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:04,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794453682] [2021-11-06 22:37:04,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:04,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:04,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:04,447 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 22:37:04,448 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 22:37:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:04,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:04,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:04,834 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 22:37:04,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:04,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886654946] [2021-11-06 22:37:04,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:04,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794453682] [2021-11-06 22:37:04,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794453682] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:04,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:04,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:37:04,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699625776] [2021-11-06 22:37:04,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:37:04,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:37:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:37:04,838 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 22:37:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:04,907 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-11-06 22:37:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:37:04,908 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 22:37:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:04,909 INFO L225 Difference]: With dead ends: 375 [2021-11-06 22:37:04,909 INFO L226 Difference]: Without dead ends: 200 [2021-11-06 22:37:04,911 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 22:37:04,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-06 22:37:04,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-11-06 22:37:04,920 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 22:37:04,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-11-06 22:37:04,921 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2021-11-06 22:37:04,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:04,921 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-11-06 22:37:04,922 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 22:37:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-11-06 22:37:04,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 22:37:04,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:04,924 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 22:37:04,955 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 22:37:05,137 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 22:37:05,138 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2021-11-06 22:37:05,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:05,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436100465] [2021-11-06 22:37:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:05,182 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:05,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946769111] [2021-11-06 22:37:05,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:05,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:05,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:05,192 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 22:37:05,194 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 22:37:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:05,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:05,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:05,557 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 22:37:05,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:05,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436100465] [2021-11-06 22:37:05,558 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:05,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946769111] [2021-11-06 22:37:05,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946769111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:05,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:05,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:37:05,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397361274] [2021-11-06 22:37:05,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:37:05,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:05,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:37:05,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:37:05,561 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 22:37:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:05,632 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2021-11-06 22:37:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:05,633 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 22:37:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:05,634 INFO L225 Difference]: With dead ends: 386 [2021-11-06 22:37:05,635 INFO L226 Difference]: Without dead ends: 191 [2021-11-06 22:37:05,635 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 22:37:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-06 22:37:05,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-11-06 22:37:05,642 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 22:37:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2021-11-06 22:37:05,643 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2021-11-06 22:37:05,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:05,643 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2021-11-06 22:37:05,643 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 22:37:05,643 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2021-11-06 22:37:05,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 22:37:05,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:05,645 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 22:37:05,672 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 22:37:05,859 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 22:37:05,860 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:05,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-06 22:37:05,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:05,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055395262] [2021-11-06 22:37:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:05,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:05,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:05,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410045893] [2021-11-06 22:37:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:05,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:05,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:05,884 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 22:37:05,886 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 22:37:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:06,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:37:06,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:06,393 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 22:37:06,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:06,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055395262] [2021-11-06 22:37:06,394 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:06,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410045893] [2021-11-06 22:37:06,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410045893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:06,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:06,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:37:06,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307889871] [2021-11-06 22:37:06,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:37:06,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:37:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:37:06,396 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 22:37:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:06,475 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-11-06 22:37:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:37:06,475 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 22:37:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:06,477 INFO L225 Difference]: With dead ends: 479 [2021-11-06 22:37:06,477 INFO L226 Difference]: Without dead ends: 298 [2021-11-06 22:37:06,477 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 22:37:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-06 22:37:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2021-11-06 22:37:06,484 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 22:37:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2021-11-06 22:37:06,485 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2021-11-06 22:37:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:06,486 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2021-11-06 22:37:06,486 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 22:37:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2021-11-06 22:37:06,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 22:37:06,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:06,487 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 22:37:06,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 22:37:06,715 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 22:37:06,716 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:06,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:06,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-06 22:37:06,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:06,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731846845] [2021-11-06 22:37:06,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:06,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:06,730 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:06,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [56713566] [2021-11-06 22:37:06,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:06,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:06,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:06,732 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 22:37:06,734 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 22:37:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:06,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:06,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:07,110 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 22:37:07,123 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 22:37:07,137 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 22:37:07,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:07,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731846845] [2021-11-06 22:37:07,138 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:07,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56713566] [2021-11-06 22:37:07,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56713566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:07,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:07,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:37:07,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999545839] [2021-11-06 22:37:07,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:37:07,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:37:07,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:37:07,143 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 22:37:07,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:07,395 INFO L93 Difference]: Finished difference Result 379 states and 483 transitions. [2021-11-06 22:37:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:07,397 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 22:37:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:07,398 INFO L225 Difference]: With dead ends: 379 [2021-11-06 22:37:07,398 INFO L226 Difference]: Without dead ends: 375 [2021-11-06 22:37:07,399 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 22:37:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-06 22:37:07,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 293. [2021-11-06 22:37:07,407 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 22:37:07,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2021-11-06 22:37:07,410 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2021-11-06 22:37:07,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:07,411 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2021-11-06 22:37:07,411 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 22:37:07,411 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2021-11-06 22:37:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 22:37:07,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:07,412 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 22:37:07,430 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 22:37:07,615 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 22:37:07,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:07,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:07,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2000986198, now seen corresponding path program 1 times [2021-11-06 22:37:07,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:07,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988074557] [2021-11-06 22:37:07,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:07,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:07,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:07,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033538062] [2021-11-06 22:37:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:07,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:07,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:07,642 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 22:37:07,643 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 22:37:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:07,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:07,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:08,090 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 22:37:08,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:08,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988074557] [2021-11-06 22:37:08,090 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:08,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033538062] [2021-11-06 22:37:08,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033538062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:08,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:08,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 22:37:08,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504724844] [2021-11-06 22:37:08,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:37:08,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:37:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:37:08,092 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 22:37:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:08,156 INFO L93 Difference]: Finished difference Result 483 states and 627 transitions. [2021-11-06 22:37:08,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:37:08,157 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 22:37:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:08,158 INFO L225 Difference]: With dead ends: 483 [2021-11-06 22:37:08,158 INFO L226 Difference]: Without dead ends: 335 [2021-11-06 22:37:08,159 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 22:37:08,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-06 22:37:08,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2021-11-06 22:37:08,166 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 22:37:08,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 408 transitions. [2021-11-06 22:37:08,167 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 408 transitions. Word has length 103 [2021-11-06 22:37:08,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:08,167 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 408 transitions. [2021-11-06 22:37:08,168 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 22:37:08,168 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 408 transitions. [2021-11-06 22:37:08,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 22:37:08,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:08,169 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 22:37:08,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 22:37:08,391 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 22:37:08,392 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:08,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:08,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1973776046, now seen corresponding path program 1 times [2021-11-06 22:37:08,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:08,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732326117] [2021-11-06 22:37:08,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:08,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:08,413 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:08,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946315950] [2021-11-06 22:37:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:08,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:08,414 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 22:37:08,416 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 22:37:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:08,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:08,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:08,855 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 22:37:08,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:08,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732326117] [2021-11-06 22:37:08,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:08,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946315950] [2021-11-06 22:37:08,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946315950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:08,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:08,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:37:08,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783644766] [2021-11-06 22:37:08,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:37:08,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:37:08,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:37:08,858 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 22:37:08,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:08,938 INFO L93 Difference]: Finished difference Result 498 states and 622 transitions. [2021-11-06 22:37:08,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:08,939 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 22:37:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:08,940 INFO L225 Difference]: With dead ends: 498 [2021-11-06 22:37:08,941 INFO L226 Difference]: Without dead ends: 310 [2021-11-06 22:37:08,941 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 22:37:08,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-06 22:37:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2021-11-06 22:37:08,947 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 22:37:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 366 transitions. [2021-11-06 22:37:08,948 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 366 transitions. Word has length 103 [2021-11-06 22:37:08,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:08,949 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 366 transitions. [2021-11-06 22:37:08,949 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 22:37:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 366 transitions. [2021-11-06 22:37:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 22:37:08,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:08,950 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 22:37:08,979 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 22:37:09,167 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 22:37:09,168 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:09,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1090927200, now seen corresponding path program 1 times [2021-11-06 22:37:09,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:09,170 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789334464] [2021-11-06 22:37:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:09,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:09,183 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:09,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69974442] [2021-11-06 22:37:09,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:09,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:09,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:09,185 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 22:37:09,186 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 22:37:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:09,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:37:09,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:09,738 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 22:37:09,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:09,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789334464] [2021-11-06 22:37:09,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:09,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69974442] [2021-11-06 22:37:09,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69974442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:09,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:09,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 22:37:09,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837392394] [2021-11-06 22:37:09,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:37:09,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 22:37:09,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:37:09,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:37:09,740 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 22:37:09,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:09,951 INFO L93 Difference]: Finished difference Result 653 states and 790 transitions. [2021-11-06 22:37:09,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:09,951 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 22:37:09,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:09,953 INFO L225 Difference]: With dead ends: 653 [2021-11-06 22:37:09,953 INFO L226 Difference]: Without dead ends: 396 [2021-11-06 22:37:09,953 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 22:37:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-06 22:37:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 389. [2021-11-06 22:37:09,962 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 22:37:09,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 470 transitions. [2021-11-06 22:37:09,963 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 470 transitions. Word has length 103 [2021-11-06 22:37:09,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:09,964 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 470 transitions. [2021-11-06 22:37:09,964 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 22:37:09,964 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 470 transitions. [2021-11-06 22:37:09,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 22:37:09,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:09,965 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 22:37:09,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 22:37:10,190 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 22:37:10,191 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 541561274, now seen corresponding path program 1 times [2021-11-06 22:37:10,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 22:37:10,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347913819] [2021-11-06 22:37:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:10,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 22:37:10,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 22:37:10,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060066999] [2021-11-06 22:37:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:10,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 22:37:10,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:10,205 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 22:37:10,229 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 22:37:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:10,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-06 22:37:10,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:10,512 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 22:37:10,518 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 22:37:10,588 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 22:37:10,589 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 22:37:10,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:10,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:10,668 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 22:37:11,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,641 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 22:37:11,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,648 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 22:37:11,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,735 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 22:37:11,795 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 22:37:11,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:11,808 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 22:37:11,826 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 22:37:11,850 INFO L354 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2021-11-06 22:37:11,851 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 22:37:13,132 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-06 22:37:13,132 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 22:37:13,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:13,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:13,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 22:37:17,619 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-06 22:37:17,620 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 22:37:17,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 22:37:17,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347913819] [2021-11-06 22:37:17,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 22:37:17,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060066999] [2021-11-06 22:37:17,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-06 22:37:17,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:17,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-06 22:37:17,701 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-06 22:37:17,703 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-06 22:37:17,709 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 22:37:17,711 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 22:37:17,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 22:37:17,931 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 22:37:17,934 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:37:17,936 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-06 22:37:17,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:37:17 BoogieIcfgContainer [2021-11-06 22:37:17,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-06 22:37:17,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-06 22:37:17,961 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-06 22:37:17,961 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-06 22:37:17,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:03" (3/4) ... [2021-11-06 22:37:17,965 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-06 22:37:17,969 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-06 22:37:17,970 INFO L168 Benchmark]: Toolchain (without parser) took 16317.23 ms. Allocated memory was 94.4 MB in the beginning and 174.1 MB in the end (delta: 79.7 MB). Free memory was 61.3 MB in the beginning and 52.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 89.7 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,971 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 22:37:17,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.3 MB in the beginning and 66.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,971 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.97 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 59.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,972 INFO L168 Benchmark]: Boogie Preprocessor took 88.04 ms. Allocated memory is still 113.2 MB. Free memory was 59.5 MB in the beginning and 53.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,972 INFO L168 Benchmark]: RCFGBuilder took 1056.81 ms. Allocated memory is still 113.2 MB. Free memory was 53.0 MB in the beginning and 75.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,972 INFO L168 Benchmark]: TraceAbstraction took 14425.24 ms. Allocated memory was 113.2 MB in the beginning and 174.1 MB in the end (delta: 60.8 MB). Free memory was 75.1 MB in the beginning and 53.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 90.6 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,973 INFO L168 Benchmark]: Witness Printer took 8.77 ms. Allocated memory is still 174.1 MB. Free memory was 53.1 MB in the beginning and 52.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-06 22:37:17,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 94.4 MB. Free memory is still 51.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 647.57 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 61.3 MB in the beginning and 66.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.97 ms. Allocated memory is still 113.2 MB. Free memory was 66.3 MB in the beginning and 59.5 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.04 ms. Allocated memory is still 113.2 MB. Free memory was 59.5 MB in the beginning and 53.0 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1056.81 ms. Allocated memory is still 113.2 MB. Free memory was 53.0 MB in the beginning and 75.1 MB in the end (delta: -22.1 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14425.24 ms. Allocated memory was 113.2 MB in the beginning and 174.1 MB in the end (delta: 60.8 MB). Free memory was 75.1 MB in the beginning and 53.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 90.6 MB. Max. memory is 16.1 GB. * Witness Printer took 8.77 ms. Allocated memory is still 174.1 MB. Free memory was 53.1 MB in the beginning and 52.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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, 182 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 14.3s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1968 SDtfs, 1143 SDslu, 1958 SDs, 0 SdLazy, 561 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 226 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.0s 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 22:37:18,007 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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_BER_test7-1.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 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 22:37:19,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 22:37:19,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 22:37:20,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 22:37:20,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 22:37:20,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 22:37:20,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 22:37:20,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 22:37:20,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 22:37:20,034 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 22:37:20,035 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 22:37:20,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 22:37:20,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 22:37:20,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 22:37:20,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 22:37:20,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 22:37:20,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 22:37:20,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 22:37:20,058 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 22:37:20,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 22:37:20,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 22:37:20,066 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 22:37:20,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 22:37:20,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 22:37:20,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 22:37:20,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 22:37:20,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 22:37:20,077 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 22:37:20,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 22:37:20,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 22:37:20,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 22:37:20,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 22:37:20,081 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 22:37:20,081 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 22:37:20,082 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 22:37:20,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 22:37:20,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 22:37:20,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 22:37:20,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 22:37:20,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 22:37:20,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 22:37:20,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-06 22:37:20,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 22:37:20,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 22:37:20,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 22:37:20,122 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 22:37:20,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 22:37:20,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 22:37:20,124 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 22:37:20,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 22:37:20,125 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 22:37:20,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 22:37:20,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 22:37:20,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 22:37:20,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 22:37:20,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 22:37:20,127 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 22:37:20,127 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 22:37:20,127 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 22:37:20,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 22:37:20,127 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 22:37:20,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 22:37:20,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 22:37:20,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 22:37:20,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 22:37:20,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:37:20,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 22:37:20,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 22:37:20,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 22:37:20,129 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 22:37:20,130 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 22:37:20,130 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 22:37:20,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 22:37:20,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 22:37:20,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 22:37:20,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 22:37:20,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-11-06 22:37:20,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 22:37:20,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 22:37:20,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 22:37:20,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 22:37:20,489 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 22:37:20,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-06 22:37:20,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be7702f7/738f8b59103a4461b1f78fcfbb861af0/FLAGf7a97e0b3 [2021-11-06 22:37:21,136 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 22:37:21,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-06 22:37:21,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be7702f7/738f8b59103a4461b1f78fcfbb861af0/FLAGf7a97e0b3 [2021-11-06 22:37:21,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7be7702f7/738f8b59103a4461b1f78fcfbb861af0 [2021-11-06 22:37:21,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 22:37:21,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 22:37:21,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 22:37:21,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 22:37:21,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 22:37:21,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:21" (1/1) ... [2021-11-06 22:37:21,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@760c264e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:21, skipping insertion in model container [2021-11-06 22:37:21,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:37:21" (1/1) ... [2021-11-06 22:37:21,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 22:37:21,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 22:37:21,984 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_BER_test7-1.i[33021,33034] [2021-11-06 22:37:22,138 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_BER_test7-1.i[44124,44137] [2021-11-06 22:37:22,140 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_BER_test7-1.i[44245,44258] [2021-11-06 22:37:22,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:37:22,164 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 22:37:22,201 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_BER_test7-1.i[33021,33034] [2021-11-06 22:37:22,295 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_BER_test7-1.i[44124,44137] [2021-11-06 22:37:22,295 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_BER_test7-1.i[44245,44258] [2021-11-06 22:37:22,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 22:37:22,335 INFO L208 MainTranslator]: Completed translation [2021-11-06 22:37:22,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22 WrapperNode [2021-11-06 22:37:22,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 22:37:22,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 22:37:22,337 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 22:37:22,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 22:37:22,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,447 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 22:37:22,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 22:37:22,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 22:37:22,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 22:37:22,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 22:37:22,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 22:37:22,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 22:37:22,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 22:37:22,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (1/1) ... [2021-11-06 22:37:22,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 22:37:22,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 22:37:22,592 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 22:37:22,622 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 22:37:22,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 22:37:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-06 22:37:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 22:37:22,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 22:37:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 22:37:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 22:37:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 22:37:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 22:37:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 22:37:22,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 22:37:22,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 22:37:22,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 22:37:25,923 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 22:37:25,927 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-06 22:37:25,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:25 BoogieIcfgContainer [2021-11-06 22:37:25,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 22:37:25,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 22:37:25,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 22:37:25,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 22:37:25,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:37:21" (1/3) ... [2021-11-06 22:37:25,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4c862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:37:25, skipping insertion in model container [2021-11-06 22:37:25,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:37:22" (2/3) ... [2021-11-06 22:37:25,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c4c862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:37:25, skipping insertion in model container [2021-11-06 22:37:25,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:37:25" (3/3) ... [2021-11-06 22:37:25,944 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-11-06 22:37:25,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 22:37:25,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 22:37:25,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 22:37:25,996 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 22:37:25,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 22:37:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 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 22:37:26,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 22:37:26,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:26,020 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:37:26,020 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:26,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-06 22:37:26,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:26,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396755382] [2021-11-06 22:37:26,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:26,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:26,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:26,040 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 22:37:26,042 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 22:37:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:26,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-06 22:37:26,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:26,274 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 22:37:26,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:26,324 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 22:37:26,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:26,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396755382] [2021-11-06 22:37:26,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396755382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:26,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:26,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 22:37:26,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781933116] [2021-11-06 22:37:26,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 22:37:26,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:26,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 22:37:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 22:37:26,351 INFO L87 Difference]: Start difference. First operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 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 22:37:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:26,412 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-11-06 22:37:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 22:37:26,413 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 22:37:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:26,425 INFO L225 Difference]: With dead ends: 361 [2021-11-06 22:37:26,426 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 22:37:26,429 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 22:37:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 22:37:26,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 22:37:26,475 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 22:37:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-06 22:37:26,478 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-06 22:37:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:26,478 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-06 22:37:26,479 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 22:37:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-06 22:37:26,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 22:37:26,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:26,480 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 22:37:26,493 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 22:37:26,689 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 22:37:26,690 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-06 22:37:26,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:26,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876788416] [2021-11-06 22:37:26,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:26,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:26,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:26,693 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 22:37:26,695 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 22:37:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:26,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:26,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:26,852 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 22:37:26,910 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 22:37:26,945 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 22:37:26,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:27,009 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 22:37:27,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:27,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876788416] [2021-11-06 22:37:27,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876788416] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:27,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:27,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 22:37:27,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460983607] [2021-11-06 22:37:27,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 22:37:27,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 22:37:27,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 22:37:27,017 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 22:37:31,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:31,095 INFO L93 Difference]: Finished difference Result 468 states and 614 transitions. [2021-11-06 22:37:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 22:37:31,096 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 22:37:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:31,099 INFO L225 Difference]: With dead ends: 468 [2021-11-06 22:37:31,099 INFO L226 Difference]: Without dead ends: 381 [2021-11-06 22:37:31,100 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 22:37:31,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-06 22:37:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 179. [2021-11-06 22:37:31,110 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 22:37:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-06 22:37:31,111 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-06 22:37:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:31,112 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-06 22:37:31,112 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 22:37:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-06 22:37:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 22:37:31,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:31,114 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 22:37:31,136 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 22:37:31,324 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 22:37:31,324 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:31,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:31,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-06 22:37:31,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:31,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618817873] [2021-11-06 22:37:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:31,326 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:31,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:31,328 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 22:37:31,330 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 22:37:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:31,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:31,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:31,692 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 22:37:31,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:31,889 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 22:37:31,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:31,890 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618817873] [2021-11-06 22:37:31,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618817873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:31,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:31,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-06 22:37:31,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969619126] [2021-11-06 22:37:31,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:37:31,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:37:31,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:37:31,892 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 22:37:32,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:32,034 INFO L93 Difference]: Finished difference Result 363 states and 476 transitions. [2021-11-06 22:37:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:32,035 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 22:37:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:32,036 INFO L225 Difference]: With dead ends: 363 [2021-11-06 22:37:32,036 INFO L226 Difference]: Without dead ends: 188 [2021-11-06 22:37:32,037 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 22:37:32,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-06 22:37:32,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2021-11-06 22:37:32,044 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 22:37:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2021-11-06 22:37:32,044 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 62 [2021-11-06 22:37:32,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:32,045 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2021-11-06 22:37:32,045 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 22:37:32,045 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2021-11-06 22:37:32,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 22:37:32,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:32,047 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 22:37:32,069 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 22:37:32,269 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 22:37:32,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:32,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-06 22:37:32,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:32,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288764793] [2021-11-06 22:37:32,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:32,271 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:32,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:32,272 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 22:37:32,274 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 22:37:32,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:32,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:32,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:32,939 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 22:37:32,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:33,346 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 22:37:33,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:33,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288764793] [2021-11-06 22:37:33,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288764793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:33,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:33,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 22:37:33,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117384072] [2021-11-06 22:37:33,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 22:37:33,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 22:37:33,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 22:37:33,348 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 22:37:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:34,251 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2021-11-06 22:37:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:37:34,251 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 22:37:34,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:34,253 INFO L225 Difference]: With dead ends: 470 [2021-11-06 22:37:34,253 INFO L226 Difference]: Without dead ends: 292 [2021-11-06 22:37:34,253 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 22:37:34,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-06 22:37:34,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 285. [2021-11-06 22:37:34,265 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 22:37:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2021-11-06 22:37:34,266 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 62 [2021-11-06 22:37:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2021-11-06 22:37:34,267 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 22:37:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2021-11-06 22:37:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 22:37:34,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:34,269 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 22:37:34,289 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 22:37:34,486 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 22:37:34,486 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:34,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:34,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-06 22:37:34,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:34,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364891389] [2021-11-06 22:37:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:34,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:34,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:34,489 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 22:37:34,493 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 22:37:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:34,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:34,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:34,943 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 22:37:34,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:35,106 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 22:37:35,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:35,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364891389] [2021-11-06 22:37:35,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364891389] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:35,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:35,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 22:37:35,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122150520] [2021-11-06 22:37:35,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:37:35,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:35,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:37:35,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:37:35,108 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 22:37:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:35,199 INFO L93 Difference]: Finished difference Result 528 states and 673 transitions. [2021-11-06 22:37:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:35,199 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 22:37:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:35,201 INFO L225 Difference]: With dead ends: 528 [2021-11-06 22:37:35,201 INFO L226 Difference]: Without dead ends: 288 [2021-11-06 22:37:35,202 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 22:37:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-06 22:37:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-06 22:37:35,209 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 22:37:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions. [2021-11-06 22:37:35,210 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 69 [2021-11-06 22:37:35,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:35,210 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 361 transitions. [2021-11-06 22:37:35,210 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 22:37:35,210 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions. [2021-11-06 22:37:35,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 22:37:35,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:35,212 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 22:37:35,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-06 22:37:35,426 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 22:37:35,426 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 982130832, now seen corresponding path program 1 times [2021-11-06 22:37:35,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:35,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785142654] [2021-11-06 22:37:35,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:35,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:35,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:35,429 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 22:37:35,432 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 22:37:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:35,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:37:35,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:35,915 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 22:37:35,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:36,184 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 22:37:36,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:36,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785142654] [2021-11-06 22:37:36,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785142654] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:37:36,185 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:37:36,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-06 22:37:36,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586170952] [2021-11-06 22:37:36,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 22:37:36,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:36,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 22:37:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 22:37:36,187 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 22:37:36,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:36,476 INFO L93 Difference]: Finished difference Result 537 states and 685 transitions. [2021-11-06 22:37:36,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 22:37:36,477 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 22:37:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:36,478 INFO L225 Difference]: With dead ends: 537 [2021-11-06 22:37:36,479 INFO L226 Difference]: Without dead ends: 294 [2021-11-06 22:37:36,479 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 22:37:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-06 22:37:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-06 22:37:36,487 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 22:37:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2021-11-06 22:37:36,488 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 72 [2021-11-06 22:37:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:36,488 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2021-11-06 22:37:36,489 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 22:37:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2021-11-06 22:37:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 22:37:36,490 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:36,490 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 22:37:36,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-06 22:37:36,707 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 22:37:36,707 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2058438736, now seen corresponding path program 2 times [2021-11-06 22:37:36,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:36,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605093514] [2021-11-06 22:37:36,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:37:36,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:36,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:36,710 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 22:37:36,710 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 22:37:36,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 22:37:36,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:37:36,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:36,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:37,080 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 22:37:37,098 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 22:37:37,115 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 22:37:37,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:37,255 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 22:37:37,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:37,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605093514] [2021-11-06 22:37:37,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605093514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:37,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:37,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 22:37:37,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098767532] [2021-11-06 22:37:37,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 22:37:37,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:37,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 22:37:37,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 22:37:37,257 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 22:37:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:40,969 INFO L93 Difference]: Finished difference Result 448 states and 571 transitions. [2021-11-06 22:37:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 22:37:40,969 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 22:37:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:40,972 INFO L225 Difference]: With dead ends: 448 [2021-11-06 22:37:40,972 INFO L226 Difference]: Without dead ends: 444 [2021-11-06 22:37:40,973 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 22:37:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-06 22:37:40,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 365. [2021-11-06 22:37:40,989 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 22:37:40,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 463 transitions. [2021-11-06 22:37:40,990 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 463 transitions. Word has length 78 [2021-11-06 22:37:40,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:40,991 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 463 transitions. [2021-11-06 22:37:40,991 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 22:37:40,991 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 463 transitions. [2021-11-06 22:37:40,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 22:37:40,997 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:40,997 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 22:37:41,006 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 22:37:41,203 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 22:37:41,204 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:41,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1224331210, now seen corresponding path program 1 times [2021-11-06 22:37:41,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:41,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171217308] [2021-11-06 22:37:41,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:41,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:41,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:41,207 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 22:37:41,209 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 22:37:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:41,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 22:37:41,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:41,952 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 22:37:41,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:42,592 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 22:37:42,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:42,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171217308] [2021-11-06 22:37:42,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171217308] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:37:42,594 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:37:42,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-06 22:37:42,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216296032] [2021-11-06 22:37:42,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 22:37:42,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:42,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 22:37:42,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 22:37:42,600 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 22:37:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:44,179 INFO L93 Difference]: Finished difference Result 697 states and 901 transitions. [2021-11-06 22:37:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 22:37:44,184 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 22:37:44,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:44,186 INFO L225 Difference]: With dead ends: 697 [2021-11-06 22:37:44,187 INFO L226 Difference]: Without dead ends: 377 [2021-11-06 22:37:44,187 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-06 22:37:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-06 22:37:44,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-06 22:37:44,198 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 22:37:44,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 475 transitions. [2021-11-06 22:37:44,199 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 475 transitions. Word has length 112 [2021-11-06 22:37:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:44,200 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 475 transitions. [2021-11-06 22:37:44,200 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 22:37:44,200 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 475 transitions. [2021-11-06 22:37:44,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 22:37:44,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:44,202 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 22:37:44,223 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 22:37:44,417 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 22:37:44,417 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:44,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:44,418 INFO L85 PathProgramCache]: Analyzing trace with hash -2016870474, now seen corresponding path program 2 times [2021-11-06 22:37:44,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:44,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968955029] [2021-11-06 22:37:44,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:37:44,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:44,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:44,419 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 22:37:44,421 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 22:37:44,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 22:37:44,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:37:44,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:37:44,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:45,043 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 22:37:45,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:45,273 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 22:37:45,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:45,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968955029] [2021-11-06 22:37:45,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968955029] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:45,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:45,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-06 22:37:45,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069525507] [2021-11-06 22:37:45,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:37:45,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:45,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:37:45,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:37:45,275 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 22:37:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:45,391 INFO L93 Difference]: Finished difference Result 603 states and 784 transitions. [2021-11-06 22:37:45,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:37:45,392 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 22:37:45,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:45,393 INFO L225 Difference]: With dead ends: 603 [2021-11-06 22:37:45,395 INFO L226 Difference]: Without dead ends: 389 [2021-11-06 22:37:45,396 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 22:37:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-06 22:37:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2021-11-06 22:37:45,407 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 22:37:45,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 460 transitions. [2021-11-06 22:37:45,408 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 460 transitions. Word has length 124 [2021-11-06 22:37:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:45,408 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 460 transitions. [2021-11-06 22:37:45,409 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 22:37:45,409 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 460 transitions. [2021-11-06 22:37:45,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 22:37:45,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:45,410 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 22:37:45,427 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 22:37:45,622 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 22:37:45,622 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:45,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1333208362, now seen corresponding path program 1 times [2021-11-06 22:37:45,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:45,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554000503] [2021-11-06 22:37:45,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:45,624 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:45,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:45,625 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 22:37:45,630 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 22:37:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:37:46,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 22:37:46,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:46,695 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 22:37:46,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:47,944 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 22:37:47,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:47,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554000503] [2021-11-06 22:37:47,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554000503] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:37:47,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:37:47,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-06 22:37:47,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529393245] [2021-11-06 22:37:47,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-06 22:37:47,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-06 22:37:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-06 22:37:47,947 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 22:37:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:58,259 INFO L93 Difference]: Finished difference Result 751 states and 919 transitions. [2021-11-06 22:37:58,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-06 22:37:58,261 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 22:37:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:58,263 INFO L225 Difference]: With dead ends: 751 [2021-11-06 22:37:58,263 INFO L226 Difference]: Without dead ends: 410 [2021-11-06 22:37:58,264 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-06 22:37:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-06 22:37:58,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-06 22:37:58,277 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 22:37:58,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 484 transitions. [2021-11-06 22:37:58,279 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 484 transitions. Word has length 124 [2021-11-06 22:37:58,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:58,279 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 484 transitions. [2021-11-06 22:37:58,279 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 22:37:58,279 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 484 transitions. [2021-11-06 22:37:58,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 22:37:58,281 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:58,281 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 22:37:58,297 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 22:37:58,486 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 22:37:58,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:58,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:58,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2039593942, now seen corresponding path program 2 times [2021-11-06 22:37:58,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:58,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548143658] [2021-11-06 22:37:58,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:37:58,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:58,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:58,489 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 22:37:58,490 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 22:37:58,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 22:37:58,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:37:58,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 22:37:58,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:37:59,227 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 22:37:59,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:37:59,505 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 22:37:59,505 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:37:59,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548143658] [2021-11-06 22:37:59,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548143658] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:37:59,506 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:37:59,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 5 [2021-11-06 22:37:59,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156760374] [2021-11-06 22:37:59,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 22:37:59,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:37:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 22:37:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 22:37:59,507 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 22:37:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:37:59,583 INFO L93 Difference]: Finished difference Result 611 states and 731 transitions. [2021-11-06 22:37:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 22:37:59,584 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 22:37:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:37:59,586 INFO L225 Difference]: With dead ends: 611 [2021-11-06 22:37:59,586 INFO L226 Difference]: Without dead ends: 413 [2021-11-06 22:37:59,586 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 22:37:59,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-06 22:37:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2021-11-06 22:37:59,600 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 22:37:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 475 transitions. [2021-11-06 22:37:59,601 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 475 transitions. Word has length 148 [2021-11-06 22:37:59,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:37:59,601 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 475 transitions. [2021-11-06 22:37:59,601 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 22:37:59,602 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 475 transitions. [2021-11-06 22:37:59,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 22:37:59,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:37:59,603 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 22:37:59,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-06 22:37:59,815 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 22:37:59,816 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:37:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:37:59,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207916, now seen corresponding path program 1 times [2021-11-06 22:37:59,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:37:59,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56378133] [2021-11-06 22:37:59,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:37:59,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:37:59,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:37:59,818 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 22:37:59,819 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 22:38:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:38:00,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-06 22:38:00,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:38:01,819 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 22:38:01,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:38:05,046 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 22:38:05,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:38:05,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56378133] [2021-11-06 22:38:05,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56378133] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:38:05,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:38:05,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-06 22:38:05,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736740263] [2021-11-06 22:38:05,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-06 22:38:05,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:38:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-06 22:38:05,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-06 22:38:05,050 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 22:39:12,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:39:12,118 INFO L93 Difference]: Finished difference Result 805 states and 961 transitions. [2021-11-06 22:39:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-06 22:39:12,119 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 22:39:12,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:39:12,121 INFO L225 Difference]: With dead ends: 805 [2021-11-06 22:39:12,121 INFO L226 Difference]: Without dead ends: 440 [2021-11-06 22:39:12,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-06 22:39:12,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-06 22:39:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-11-06 22:39:12,139 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 22:39:12,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 505 transitions. [2021-11-06 22:39:12,141 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 505 transitions. Word has length 148 [2021-11-06 22:39:12,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:39:12,141 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 505 transitions. [2021-11-06 22:39:12,141 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 22:39:12,141 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 505 transitions. [2021-11-06 22:39:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 22:39:12,143 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:39:12,143 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 22:39:12,164 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 22:39:12,363 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 22:39:12,364 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:39:12,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:39:12,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843980, now seen corresponding path program 2 times [2021-11-06 22:39:12,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:39:12,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533049773] [2021-11-06 22:39:12,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:39:12,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:39:12,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:39:12,367 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 22:39:12,369 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 22:39:13,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:39:13,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:39:13,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-06 22:39:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:39:14,762 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 22:39:14,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:39:18,474 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 22:39:18,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:39:18,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533049773] [2021-11-06 22:39:18,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533049773] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:39:18,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:39:18,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-06 22:39:18,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042392655] [2021-11-06 22:39:18,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-06 22:39:18,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:39:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-06 22:39:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 22:39:18,477 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 22:40:34,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:40:34,603 INFO L93 Difference]: Finished difference Result 868 states and 1027 transitions. [2021-11-06 22:40:34,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-06 22:40:34,604 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 22:40:34,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:40:34,606 INFO L225 Difference]: With dead ends: 868 [2021-11-06 22:40:34,606 INFO L226 Difference]: Without dead ends: 473 [2021-11-06 22:40:34,609 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-06 22:40:34,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-06 22:40:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-11-06 22:40:34,632 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 22:40:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 538 transitions. [2021-11-06 22:40:34,633 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 538 transitions. Word has length 178 [2021-11-06 22:40:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:40:34,634 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 538 transitions. [2021-11-06 22:40:34,634 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 22:40:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 538 transitions. [2021-11-06 22:40:34,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 22:40:34,636 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:40:34,636 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 22:40:34,659 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 22:40:34,856 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 22:40:34,856 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:40:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:40:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1145284768, now seen corresponding path program 3 times [2021-11-06 22:40:34,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:40:34,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788997813] [2021-11-06 22:40:34,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 22:40:34,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:40:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:40:34,859 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 22:40:34,861 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 22:40:35,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 22:40:35,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:40:35,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 22:40:35,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:40:36,234 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 22:40:36,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:40:36,918 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 22:40:36,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:40:36,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788997813] [2021-11-06 22:40:36,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788997813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 22:40:36,919 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 22:40:36,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-06 22:40:36,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514858047] [2021-11-06 22:40:36,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 22:40:36,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:40:36,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 22:40:36,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 22:40:36,920 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 22:40:41,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:40:41,047 INFO L93 Difference]: Finished difference Result 983 states and 1122 transitions. [2021-11-06 22:40:41,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 22:40:41,048 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 22:40:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:40:41,050 INFO L225 Difference]: With dead ends: 983 [2021-11-06 22:40:41,050 INFO L226 Difference]: Without dead ends: 555 [2021-11-06 22:40:41,051 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 22:40:41,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-06 22:40:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 548. [2021-11-06 22:40:41,077 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 22:40:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 625 transitions. [2021-11-06 22:40:41,078 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 625 transitions. Word has length 211 [2021-11-06 22:40:41,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:40:41,079 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 625 transitions. [2021-11-06 22:40:41,079 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 22:40:41,079 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 625 transitions. [2021-11-06 22:40:41,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-06 22:40:41,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:40:41,081 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 22:40:41,099 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 22:40:41,296 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 22:40:41,297 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:40:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:40:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 670931834, now seen corresponding path program 1 times [2021-11-06 22:40:41,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:40:41,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587992113] [2021-11-06 22:40:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 22:40:41,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:40:41,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:40:41,300 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 22:40:41,301 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 22:40:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 22:40:42,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-06 22:40:42,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:40:46,351 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 22:40:46,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:41:00,057 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 22:41:00,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:41:00,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587992113] [2021-11-06 22:41:00,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587992113] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:41:00,057 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:41:00,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-06 22:41:00,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938119016] [2021-11-06 22:41:00,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-06 22:41:00,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:41:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-06 22:41:00,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-06 22:41:00,063 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 22:44:50,362 WARN L207 SmtUtils]: Spent 6.89 s on a formula simplification that was a NOOP. DAG size: 196 [2021-11-06 22:45:00,250 WARN L207 SmtUtils]: Spent 7.16 s on a formula simplification that was a NOOP. DAG size: 193 [2021-11-06 22:45:08,575 WARN L207 SmtUtils]: Spent 5.49 s on a formula simplification that was a NOOP. DAG size: 190 [2021-11-06 22:45:57,622 WARN L860 $PredicateComparison]: unable to prove that (and (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv37 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv7 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv46 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv35 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv40 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv29 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv43 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv31 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv42 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv5 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv54 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv16 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv41 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv45 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv14 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv6 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv3 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv23 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv53 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv36 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv30 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv47 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv15 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv8 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv50 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv4 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv39 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv12 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv17 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv52 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv38 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv11 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv25 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv2 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv18 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv19 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv34 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv10 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv51 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv24 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv48 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv28 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv49 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv33 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv20 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv1 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv44 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv13 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv32 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv21 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv26 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv27 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv9 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv22 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|)) is different from true [2021-11-06 22:46:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 22:46:53,946 INFO L93 Difference]: Finished difference Result 1003 states and 1217 transitions. [2021-11-06 22:46:53,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-06 22:46:53,947 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 22:46:53,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 22:46:53,956 INFO L225 Difference]: With dead ends: 1003 [2021-11-06 22:46:53,956 INFO L226 Difference]: Without dead ends: 614 [2021-11-06 22:46:53,964 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1933 ImplicationChecksByTransitivity, 241.4s TimeCoverageRelationStatistics Valid=12751, Invalid=25082, Unknown=1, NotChecked=386, Total=38220 [2021-11-06 22:46:53,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-06 22:46:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-11-06 22:46:54,013 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 22:46:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 691 transitions. [2021-11-06 22:46:54,015 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 691 transitions. Word has length 218 [2021-11-06 22:46:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 22:46:54,015 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 691 transitions. [2021-11-06 22:46:54,016 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 22:46:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 691 transitions. [2021-11-06 22:46:54,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-06 22:46:54,017 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 22:46:54,018 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 22:46:54,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-06 22:46:54,231 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 22:46:54,231 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 22:46:54,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 22:46:54,232 INFO L85 PathProgramCache]: Analyzing trace with hash 249759226, now seen corresponding path program 2 times [2021-11-06 22:46:54,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 22:46:54,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767192936] [2021-11-06 22:46:54,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 22:46:54,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 22:46:54,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 22:46:54,234 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 22:46:54,235 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 22:46:56,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 22:46:56,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 22:46:56,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-06 22:46:56,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 22:47:07,694 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 22:47:07,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 22:47:57,962 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 22:47:57,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 22:47:57,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767192936] [2021-11-06 22:47:57,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767192936] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 22:47:57,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 22:47:57,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 264 [2021-11-06 22:47:57,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196231162] [2021-11-06 22:47:57,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2021-11-06 22:47:57,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 22:47:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2021-11-06 22:47:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17686, Invalid=51746, Unknown=0, NotChecked=0, Total=69432 [2021-11-06 22:47:57,975 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