./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 3a877d22 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 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:49:42,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:49:42,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:49:42,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:49:42,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:49:42,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:49:42,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:49:42,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:49:42,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:49:42,477 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:49:42,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:49:42,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:49:42,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:49:42,481 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:49:42,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:49:42,485 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:49:42,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:49:42,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:49:42,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:49:42,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:49:42,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:49:42,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:49:42,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:49:42,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:49:42,511 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:49:42,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:49:42,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:49:42,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:49:42,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:49:42,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:49:42,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:49:42,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:49:42,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:49:42,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:49:42,525 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:49:42,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:49:42,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:49:42,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:49:42,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:49:42,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:49:42,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:49:42,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 13:49:42,551 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:49:42,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:49:42,551 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:49:42,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:49:42,552 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:49:42,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:49:42,553 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:49:42,553 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:49:42,553 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:49:42,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:49:42,554 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:49:42,554 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 13:49:42,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:49:42,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:49:42,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:49:42,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:49:42,555 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:49:42,555 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:49:42,555 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:49:42,556 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:49:42,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:49:42,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:49:42,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:49:42,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:49:42,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:42,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:49:42,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:49:42,557 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:49:42,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 13:49:42,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 13:49:42,558 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:49:42,558 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:49:42,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:49:42,558 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:49:42,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-12-15 13:49:42,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:49:42,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:49:42,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:49:42,817 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:49:42,817 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:49:42,819 INFO L432 ainManager$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 [2021-12-15 13:49:42,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c519d05/def0cf4c90434a319a5f34a2aec90458/FLAG5fd409b27 [2021-12-15 13:49:43,457 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:49:43,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-12-15 13:49:43,475 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c519d05/def0cf4c90434a319a5f34a2aec90458/FLAG5fd409b27 [2021-12-15 13:49:43,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9c519d05/def0cf4c90434a319a5f34a2aec90458 [2021-12-15 13:49:43,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:49:43,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:49:43,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:43,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:49:43,722 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:49:43,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:43" (1/1) ... [2021-12-15 13:49:43,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e234bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:43, skipping insertion in model container [2021-12-15 13:49:43,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:43" (1/1) ... [2021-12-15 13:49:43,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:49:43,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:49:44,163 WARN L230 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] [2021-12-15 13:49:44,305 WARN L230 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] [2021-12-15 13:49:44,306 WARN L230 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] [2021-12-15 13:49:44,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:44,324 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:49:44,391 WARN L230 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] [2021-12-15 13:49:44,501 WARN L230 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] [2021-12-15 13:49:44,503 WARN L230 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] [2021-12-15 13:49:44,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:44,544 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:49:44,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44 WrapperNode [2021-12-15 13:49:44,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:44,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:44,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:49:44,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:49:44,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,650 INFO L137 Inliner]: procedures = 176, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2021-12-15 13:49:44,650 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:44,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:49:44,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:49:44,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:49:44,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:49:44,765 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:49:44,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:49:44,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:49:44,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (1/1) ... [2021-12-15 13:49:44,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:44,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:44,807 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) [2021-12-15 13:49:44,828 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 [2021-12-15 13:49:44,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 13:49:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 13:49:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:49:44,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:49:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:49:44,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:49:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:49:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:49:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:49:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:49:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:49:44,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 13:49:44,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:49:44,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:49:45,073 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:49:45,078 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:49:46,768 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:49:46,775 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:49:46,776 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-12-15 13:49:46,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:49:46 BoogieIcfgContainer [2021-12-15 13:49:46,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:49:46,779 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:49:46,779 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:49:46,782 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:49:46,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:49:43" (1/3) ... [2021-12-15 13:49:46,783 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e767f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:49:46, skipping insertion in model container [2021-12-15 13:49:46,783 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:44" (2/3) ... [2021-12-15 13:49:46,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e767f7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:49:46, skipping insertion in model container [2021-12-15 13:49:46,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:49:46" (3/3) ... [2021-12-15 13:49:46,785 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-12-15 13:49:46,789 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:49:46,789 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:49:46,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:49:46,833 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 13:49:46,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:49:46,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 179 states have (on average 1.6983240223463687) internal successors, (304), 181 states have internal predecessors, (304), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:49:46,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 13:49:46,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:46,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:46,871 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:46,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash -2094566776, now seen corresponding path program 1 times [2021-12-15 13:49:46,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:46,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547349481] [2021-12-15 13:49:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:46,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:47,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:47,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547349481] [2021-12-15 13:49:47,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547349481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:47,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:47,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:49:47,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364651484] [2021-12-15 13:49:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:47,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:49:47,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:47,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:49:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:49:47,086 INFO L87 Difference]: Start difference. First operand has 186 states, 179 states have (on average 1.6983240223463687) internal successors, (304), 181 states have internal predecessors, (304), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2021-12-15 13:49:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:47,122 INFO L93 Difference]: Finished difference Result 369 states and 617 transitions. [2021-12-15 13:49:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:49:47,125 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 [2021-12-15 13:49:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:47,133 INFO L225 Difference]: With dead ends: 369 [2021-12-15 13:49:47,133 INFO L226 Difference]: Without dead ends: 181 [2021-12-15 13:49:47,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:49:47,140 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:49:47,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:49:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-15 13:49:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-12-15 13:49:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 176 states have internal predecessors, (230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:49:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2021-12-15 13:49:47,185 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 8 [2021-12-15 13:49:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:47,186 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2021-12-15 13:49:47,186 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) [2021-12-15 13:49:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2021-12-15 13:49:47,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 13:49:47,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:47,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:49:47,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 13:49:47,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash -716312389, now seen corresponding path program 1 times [2021-12-15 13:49:47,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:47,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121833540] [2021-12-15 13:49:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:47,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:47,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:47,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:47,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121833540] [2021-12-15 13:49:47,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121833540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:47,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:47,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:49:47,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203063353] [2021-12-15 13:49:47,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:47,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:49:47,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:49:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:49:47,264 INFO L87 Difference]: Start difference. First operand 181 states and 236 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) [2021-12-15 13:49:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:47,639 INFO L93 Difference]: Finished difference Result 386 states and 505 transitions. [2021-12-15 13:49:47,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:49:47,640 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 [2021-12-15 13:49:47,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:47,642 INFO L225 Difference]: With dead ends: 386 [2021-12-15 13:49:47,643 INFO L226 Difference]: Without dead ends: 299 [2021-12-15 13:49:47,643 INFO L932 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 [2021-12-15 13:49:47,645 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 146 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 13:49:47,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 578 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 13:49:47,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-15 13:49:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 183. [2021-12-15 13:49:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 177 states have (on average 1.310734463276836) internal successors, (232), 178 states have internal predecessors, (232), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:49:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 238 transitions. [2021-12-15 13:49:47,660 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 238 transitions. Word has length 10 [2021-12-15 13:49:47,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:47,661 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 238 transitions. [2021-12-15 13:49:47,661 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) [2021-12-15 13:49:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 238 transitions. [2021-12-15 13:49:47,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-15 13:49:47,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:47,663 INFO L514 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] [2021-12-15 13:49:47,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 13:49:47,664 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1437380185, now seen corresponding path program 1 times [2021-12-15 13:49:47,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:47,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637600952] [2021-12-15 13:49:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:47,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:47,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:49:47,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208529914] [2021-12-15 13:49:47,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:47,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:49:47,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:47,850 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) [2021-12-15 13:49:47,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 13:49:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:48,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:49:48,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:49:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:48,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:49:48,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:48,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637600952] [2021-12-15 13:49:48,606 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:49:48,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208529914] [2021-12-15 13:49:48,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208529914] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:48,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:48,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:49:48,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886008224] [2021-12-15 13:49:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:48,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:49:48,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:48,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:49:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:49:48,609 INFO L87 Difference]: Start difference. First operand 183 states and 238 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) [2021-12-15 13:49:48,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:48,697 INFO L93 Difference]: Finished difference Result 383 states and 503 transitions. [2021-12-15 13:49:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:49:48,698 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 [2021-12-15 13:49:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:48,701 INFO L225 Difference]: With dead ends: 383 [2021-12-15 13:49:48,701 INFO L226 Difference]: Without dead ends: 204 [2021-12-15 13:49:48,708 INFO L932 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 [2021-12-15 13:49:48,711 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 9 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:49:48,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 417 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:49:48,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-15 13:49:48,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2021-12-15 13:49:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.2791878172588833) internal successors, (252), 198 states have internal predecessors, (252), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:49:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 258 transitions. [2021-12-15 13:49:48,730 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 258 transitions. Word has length 62 [2021-12-15 13:49:48,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:48,730 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 258 transitions. [2021-12-15 13:49:48,731 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) [2021-12-15 13:49:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 258 transitions. [2021-12-15 13:49:48,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-15 13:49:48,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:48,740 INFO L514 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] [2021-12-15 13:49:48,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 13:49:48,967 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 [2021-12-15 13:49:48,968 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:48,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash -539986907, now seen corresponding path program 1 times [2021-12-15 13:49:48,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:48,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219742511] [2021-12-15 13:49:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:48,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:49,060 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:49:49,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869460512] [2021-12-15 13:49:49,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:49,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:49:49,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:49,063 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) [2021-12-15 13:49:49,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 13:49:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:49,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 13:49:49,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:49:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:49,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:49:49,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219742511] [2021-12-15 13:49:49,788 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:49:49,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869460512] [2021-12-15 13:49:49,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869460512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:49,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:49,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:49:49,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147038614] [2021-12-15 13:49:49,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:49,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:49:49,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:49,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:49:49,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:49:49,799 INFO L87 Difference]: Start difference. First operand 203 states and 258 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) [2021-12-15 13:49:49,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:49,897 INFO L93 Difference]: Finished difference Result 394 states and 504 transitions. [2021-12-15 13:49:49,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:49:49,898 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 [2021-12-15 13:49:49,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:49,899 INFO L225 Difference]: With dead ends: 394 [2021-12-15 13:49:49,899 INFO L226 Difference]: Without dead ends: 195 [2021-12-15 13:49:49,901 INFO L932 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 [2021-12-15 13:49:49,903 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 214 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:49:49,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 435 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:49:49,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-15 13:49:49,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2021-12-15 13:49:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 183 states have (on average 1.2622950819672132) internal successors, (231), 184 states have internal predecessors, (231), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:49:49,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 237 transitions. [2021-12-15 13:49:49,922 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 237 transitions. Word has length 62 [2021-12-15 13:49:49,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:49,922 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 237 transitions. [2021-12-15 13:49:49,922 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) [2021-12-15 13:49:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 237 transitions. [2021-12-15 13:49:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-15 13:49:49,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:49,928 INFO L514 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] [2021-12-15 13:49:49,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 13:49:50,135 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 [2021-12-15 13:49:50,136 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:50,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -67840205, now seen corresponding path program 1 times [2021-12-15 13:49:50,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:50,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907160672] [2021-12-15 13:49:50,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:50,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:50,220 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-15 13:49:50,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811756346] [2021-12-15 13:49:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:50,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 13:49:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:50,222 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) [2021-12-15 13:49:50,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 13:49:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:49:51,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 13:49:51,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:49:51,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:49:51,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:49:51,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 13:49:51,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907160672] [2021-12-15 13:49:51,408 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-15 13:49:51,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811756346] [2021-12-15 13:49:51,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811756346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:49:51,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:49:51,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 13:49:51,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989842236] [2021-12-15 13:49:51,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:49:51,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 13:49:51,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 13:49:51,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 13:49:51,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 13:49:51,410 INFO L87 Difference]: Start difference. First operand 189 states and 237 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) [2021-12-15 13:49:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:49:51,505 INFO L93 Difference]: Finished difference Result 487 states and 610 transitions. [2021-12-15 13:49:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 13:49:51,505 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 [2021-12-15 13:49:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:49:51,507 INFO L225 Difference]: With dead ends: 487 [2021-12-15 13:49:51,507 INFO L226 Difference]: Without dead ends: 302 [2021-12-15 13:49:51,507 INFO L932 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 [2021-12-15 13:49:51,508 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 101 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:49:51,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 473 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:49:51,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-12-15 13:49:51,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2021-12-15 13:49:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 289 states have (on average 1.259515570934256) internal successors, (364), 290 states have internal predecessors, (364), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:49:51,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 370 transitions. [2021-12-15 13:49:51,520 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 370 transitions. Word has length 62 [2021-12-15 13:49:51,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:49:51,524 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 370 transitions. [2021-12-15 13:49:51,524 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) [2021-12-15 13:49:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 370 transitions. [2021-12-15 13:49:51,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-15 13:49:51,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:49:51,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2021-12-15 13:49:51,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:49:51,727 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 [2021-12-15 13:49:51,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:49:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:49:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash -681144927, now seen corresponding path program 1 times [2021-12-15 13:49:51,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 13:49:51,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141992775] [2021-12-15 13:49:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:49:51,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 13:49:51,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-15 13:49:51,775 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:49:51,780 INFO L158 Benchmark]: Toolchain (without parser) took 8064.34ms. Allocated memory was 92.3MB in the beginning and 176.2MB in the end (delta: 83.9MB). Free memory was 58.5MB in the beginning and 121.9MB in the end (delta: -63.4MB). Peak memory consumption was 85.8MB. Max. memory is 16.1GB. [2021-12-15 13:49:51,780 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 49.1MB in the beginning and 49.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:49:51,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 825.49ms. Allocated memory is still 92.3MB. Free memory was 58.2MB in the beginning and 45.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 13:49:51,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.02ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 45.9MB in the beginning and 83.4MB in the end (delta: -37.5MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. [2021-12-15 13:49:51,781 INFO L158 Benchmark]: Boogie Preprocessor took 113.63ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 76.4MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:49:51,781 INFO L158 Benchmark]: RCFGBuilder took 2012.68ms. Allocated memory is still 111.1MB. Free memory was 76.4MB in the beginning and 55.6MB in the end (delta: 20.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2021-12-15 13:49:51,781 INFO L158 Benchmark]: TraceAbstraction took 4999.82ms. Allocated memory was 111.1MB in the beginning and 176.2MB in the end (delta: 65.0MB). Free memory was 54.9MB in the beginning and 121.9MB in the end (delta: -67.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. [2021-12-15 13:49:51,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 92.3MB. Free memory was 49.1MB in the beginning and 49.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 825.49ms. Allocated memory is still 92.3MB. Free memory was 58.2MB in the beginning and 45.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.02ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 45.9MB in the beginning and 83.4MB in the end (delta: -37.5MB). Peak memory consumption was 8.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 113.63ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 76.4MB in the end (delta: 7.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2012.68ms. Allocated memory is still 111.1MB. Free memory was 76.4MB in the beginning and 55.6MB in the end (delta: 20.8MB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4999.82ms. Allocated memory was 111.1MB in the beginning and 176.2MB in the end (delta: 65.0MB). Free memory was 54.9MB in the beginning and 121.9MB in the end (delta: -67.0MB). Peak memory consumption was 63.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:49:51,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_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 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 13:49:54,512 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 13:49:54,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 13:49:54,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 13:49:54,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 13:49:54,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 13:49:54,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 13:49:54,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 13:49:54,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 13:49:54,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 13:49:54,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 13:49:54,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 13:49:54,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 13:49:54,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 13:49:54,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 13:49:54,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 13:49:54,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 13:49:54,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 13:49:54,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 13:49:54,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 13:49:54,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 13:49:54,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 13:49:54,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 13:49:54,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 13:49:54,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 13:49:54,604 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 13:49:54,604 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 13:49:54,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 13:49:54,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 13:49:54,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 13:49:54,607 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 13:49:54,608 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 13:49:54,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 13:49:54,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 13:49:54,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 13:49:54,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 13:49:54,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 13:49:54,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 13:49:54,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 13:49:54,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 13:49:54,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 13:49:54,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 13:49:54,696 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 13:49:54,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 13:49:54,709 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 13:49:54,709 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 13:49:54,710 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 13:49:54,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 13:49:54,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 13:49:54,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 13:49:54,712 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 13:49:54,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 13:49:54,714 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 13:49:54,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 13:49:54,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 13:49:54,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 13:49:54,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 13:49:54,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 13:49:54,715 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 13:49:54,715 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 13:49:54,715 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 13:49:54,715 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 13:49:54,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 13:49:54,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 13:49:54,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 13:49:54,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 13:49:54,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 13:49:54,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 13:49:54,736 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:54,736 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 13:49:54,736 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 13:49:54,736 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 13:49:54,736 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 13:49:54,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 13:49:54,737 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 13:49:54,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 13:49:54,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 13:49:54,737 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 13:49:54,737 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 13:49:54,737 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-12-15 13:49:55,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 13:49:55,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 13:49:55,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 13:49:55,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 13:49:55,236 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 13:49:55,237 INFO L432 ainManager$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 [2021-12-15 13:49:55,336 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49183531a/f42f46d647e4461480667badfa0bdce2/FLAG1350320d8 [2021-12-15 13:49:56,006 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 13:49:56,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-12-15 13:49:56,030 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49183531a/f42f46d647e4461480667badfa0bdce2/FLAG1350320d8 [2021-12-15 13:49:56,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49183531a/f42f46d647e4461480667badfa0bdce2 [2021-12-15 13:49:56,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 13:49:56,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 13:49:56,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:56,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 13:49:56,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 13:49:56,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:56" (1/1) ... [2021-12-15 13:49:56,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f23a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:56, skipping insertion in model container [2021-12-15 13:49:56,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 01:49:56" (1/1) ... [2021-12-15 13:49:56,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 13:49:56,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:49:56,642 WARN L230 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] [2021-12-15 13:49:56,773 WARN L230 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] [2021-12-15 13:49:56,776 WARN L230 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] [2021-12-15 13:49:56,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:56,795 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-15 13:49:56,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 13:49:56,827 WARN L230 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] [2021-12-15 13:49:56,905 WARN L230 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] [2021-12-15 13:49:56,906 WARN L230 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] [2021-12-15 13:49:56,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:56,913 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 13:49:56,937 WARN L230 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] [2021-12-15 13:49:56,979 WARN L230 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] [2021-12-15 13:49:56,981 WARN L230 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] [2021-12-15 13:49:56,983 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 13:49:57,029 INFO L208 MainTranslator]: Completed translation [2021-12-15 13:49:57,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57 WrapperNode [2021-12-15 13:49:57,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 13:49:57,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:57,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 13:49:57,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 13:49:57,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,271 INFO L137 Inliner]: procedures = 179, calls = 277, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 996 [2021-12-15 13:49:57,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 13:49:57,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 13:49:57,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 13:49:57,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 13:49:57,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 13:49:57,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 13:49:57,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 13:49:57,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 13:49:57,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (1/1) ... [2021-12-15 13:49:57,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 13:49:57,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 13:49:57,476 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) [2021-12-15 13:49:57,498 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 [2021-12-15 13:49:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-15 13:49:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 13:49:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-15 13:49:57,513 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-15 13:49:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 13:49:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 13:49:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 13:49:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 13:49:57,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 13:49:57,829 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 13:49:57,831 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 13:50:04,252 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 13:50:04,259 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 13:50:04,259 INFO L301 CfgBuilder]: Removed 63 assume(true) statements. [2021-12-15 13:50:04,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:50:04 BoogieIcfgContainer [2021-12-15 13:50:04,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 13:50:04,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 13:50:04,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 13:50:04,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 13:50:04,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 01:49:56" (1/3) ... [2021-12-15 13:50:04,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bc6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:50:04, skipping insertion in model container [2021-12-15 13:50:04,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 01:49:57" (2/3) ... [2021-12-15 13:50:04,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71bc6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 01:50:04, skipping insertion in model container [2021-12-15 13:50:04,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 01:50:04" (3/3) ... [2021-12-15 13:50:04,282 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-12-15 13:50:04,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 13:50:04,287 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-15 13:50:04,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 13:50:04,351 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 13:50:04,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-15 13:50:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 179 states have (on average 1.6983240223463687) internal successors, (304), 181 states have internal predecessors, (304), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:50:04,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 13:50:04,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:04,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:04,375 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:04,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -2094566776, now seen corresponding path program 1 times [2021-12-15 13:50:04,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:04,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739470551] [2021-12-15 13:50:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:04,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:04,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:04,397 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) [2021-12-15 13:50:04,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 13:50:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:50:04,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 13:50:04,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:50:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:50:04,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:50:04,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:50:04,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739470551] [2021-12-15 13:50:04,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739470551] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:50:04,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:50:04,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 13:50:04,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839653324] [2021-12-15 13:50:04,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:50:04,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 13:50:04,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:50:04,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 13:50:04,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:50:04,692 INFO L87 Difference]: Start difference. First operand has 186 states, 179 states have (on average 1.6983240223463687) internal successors, (304), 181 states have internal predecessors, (304), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2021-12-15 13:50:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:04,743 INFO L93 Difference]: Finished difference Result 369 states and 617 transitions. [2021-12-15 13:50:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 13:50:04,746 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 [2021-12-15 13:50:04,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:04,753 INFO L225 Difference]: With dead ends: 369 [2021-12-15 13:50:04,753 INFO L226 Difference]: Without dead ends: 181 [2021-12-15 13:50:04,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 13:50:04,763 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:04,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 13:50:04,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-15 13:50:04,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-12-15 13:50:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 176 states have internal predecessors, (230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:50:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2021-12-15 13:50:04,815 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 8 [2021-12-15 13:50:04,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:04,816 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2021-12-15 13:50:04,816 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) [2021-12-15 13:50:04,817 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2021-12-15 13:50:04,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 13:50:04,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:04,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:04,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 13:50:05,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:05,024 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:05,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:05,025 INFO L85 PathProgramCache]: Analyzing trace with hash -716312389, now seen corresponding path program 1 times [2021-12-15 13:50:05,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:05,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560451699] [2021-12-15 13:50:05,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:05,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:05,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:05,027 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) [2021-12-15 13:50:05,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 13:50:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:50:05,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 13:50:05,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:50:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:50:05,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:50:05,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:50:05,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560451699] [2021-12-15 13:50:05,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560451699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:50:05,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:50:05,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:50:05,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508274730] [2021-12-15 13:50:05,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:50:05,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:50:05,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:50:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:50:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:50:05,389 INFO L87 Difference]: Start difference. First operand 181 states and 236 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) [2021-12-15 13:50:07,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 13:50:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:09,416 INFO L93 Difference]: Finished difference Result 468 states and 614 transitions. [2021-12-15 13:50:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:50:09,420 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 [2021-12-15 13:50:09,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:09,422 INFO L225 Difference]: With dead ends: 468 [2021-12-15 13:50:09,422 INFO L226 Difference]: Without dead ends: 287 [2021-12-15 13:50:09,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:09,424 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 140 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:09,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 623 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-12-15 13:50:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-15 13:50:09,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2021-12-15 13:50:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.3201438848920863) internal successors, (367), 279 states have internal predecessors, (367), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:50:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 373 transitions. [2021-12-15 13:50:09,452 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 373 transitions. Word has length 10 [2021-12-15 13:50:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:09,452 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 373 transitions. [2021-12-15 13:50:09,453 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) [2021-12-15 13:50:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 373 transitions. [2021-12-15 13:50:09,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:50:09,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:09,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:09,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:09,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:09,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:09,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash -294024543, now seen corresponding path program 1 times [2021-12-15 13:50:09,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:09,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583022004] [2021-12-15 13:50:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:09,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:09,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:09,662 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) [2021-12-15 13:50:09,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 13:50:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:50:09,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-15 13:50:09,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:50:10,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:50:10,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:50:10,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:50:10,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583022004] [2021-12-15 13:50:10,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583022004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:50:10,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:50:10,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 13:50:10,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656419332] [2021-12-15 13:50:10,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:50:10,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 13:50:10,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:50:10,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 13:50:10,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:10,081 INFO L87 Difference]: Start difference. First operand 284 states and 373 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:50:10,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:10,257 INFO L93 Difference]: Finished difference Result 454 states and 597 transitions. [2021-12-15 13:50:10,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:50:10,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-15 13:50:10,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:10,260 INFO L225 Difference]: With dead ends: 454 [2021-12-15 13:50:10,260 INFO L226 Difference]: Without dead ends: 306 [2021-12-15 13:50:10,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:10,265 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 92 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:10,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 740 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 13:50:10,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-12-15 13:50:10,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 290. [2021-12-15 13:50:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 284 states have (on average 1.2570422535211268) internal successors, (357), 285 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:50:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-12-15 13:50:10,297 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 44 [2021-12-15 13:50:10,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:10,297 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-12-15 13:50:10,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:50:10,298 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-12-15 13:50:10,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:50:10,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:10,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:10,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:10,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:10,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:10,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:10,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1193467565, now seen corresponding path program 1 times [2021-12-15 13:50:10,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:10,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048711675] [2021-12-15 13:50:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:10,516 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:10,520 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) [2021-12-15 13:50:10,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 13:50:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:50:10,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 13:50:10,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:50:10,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:50:10,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:50:10,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:50:10,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048711675] [2021-12-15 13:50:10,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048711675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:50:10,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:50:10,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 13:50:10,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543174777] [2021-12-15 13:50:10,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:50:10,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 13:50:10,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:50:10,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 13:50:10,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:10,846 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:50:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:10,939 INFO L93 Difference]: Finished difference Result 446 states and 551 transitions. [2021-12-15 13:50:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:50:10,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-15 13:50:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:10,941 INFO L225 Difference]: With dead ends: 446 [2021-12-15 13:50:10,941 INFO L226 Difference]: Without dead ends: 292 [2021-12-15 13:50:10,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:10,943 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 81 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:10,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 740 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 13:50:10,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-12-15 13:50:10,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 278. [2021-12-15 13:50:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.2389705882352942) internal successors, (337), 273 states have internal predecessors, (337), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:50:10,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 343 transitions. [2021-12-15 13:50:10,952 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 343 transitions. Word has length 44 [2021-12-15 13:50:10,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:10,953 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 343 transitions. [2021-12-15 13:50:10,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:50:10,953 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 343 transitions. [2021-12-15 13:50:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-15 13:50:10,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:10,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 13:50:10,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-15 13:50:11,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:11,170 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:11,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash -440515753, now seen corresponding path program 1 times [2021-12-15 13:50:11,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:11,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978281773] [2021-12-15 13:50:11,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:11,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:11,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:11,172 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) [2021-12-15 13:50:11,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 13:50:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 13:50:11,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-15 13:50:11,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 13:50:11,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:50:11,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 13:50:11,523 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-12-15 13:50:11,524 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 3 case distinctions, treesize of input 29 treesize of output 36 [2021-12-15 13:50:11,616 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-12-15 13:50:11,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-12-15 13:50:11,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 13:50:11,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 13:50:11,760 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 13:50:11,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978281773] [2021-12-15 13:50:11,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978281773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 13:50:11,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 13:50:11,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 13:50:11,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516683999] [2021-12-15 13:50:11,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 13:50:11,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 13:50:11,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 13:50:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 13:50:11,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 13:50:11,762 INFO L87 Difference]: Start difference. First operand 278 states and 343 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:50:14,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-15 13:50:16,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 13:50:16,494 INFO L93 Difference]: Finished difference Result 505 states and 611 transitions. [2021-12-15 13:50:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 13:50:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-15 13:50:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 13:50:16,496 INFO L225 Difference]: With dead ends: 505 [2021-12-15 13:50:16,496 INFO L226 Difference]: Without dead ends: 362 [2021-12-15 13:50:16,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 13:50:16,497 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 84 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-15 13:50:16,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 589 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 1 Unknown, 21 Unchecked, 4.7s Time] [2021-12-15 13:50:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-15 13:50:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 277. [2021-12-15 13:50:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 271 states have (on average 1.2361623616236161) internal successors, (335), 272 states have internal predecessors, (335), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-15 13:50:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 341 transitions. [2021-12-15 13:50:16,508 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 341 transitions. Word has length 44 [2021-12-15 13:50:16,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 13:50:16,508 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 341 transitions. [2021-12-15 13:50:16,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 13:50:16,508 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 341 transitions. [2021-12-15 13:50:16,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-15 13:50:16,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 13:50:16,510 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1] [2021-12-15 13:50:16,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:16,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:16,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 13:50:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 13:50:16,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1692574547, now seen corresponding path program 1 times [2021-12-15 13:50:16,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 13:50:16,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893032234] [2021-12-15 13:50:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 13:50:16,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 13:50:16,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 13:50:16,729 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) [2021-12-15 13:50:16,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 13:50:16,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 13:50:17,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 13:50:17,035 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-15 13:50:17,038 INFO L158 Benchmark]: Toolchain (without parser) took 20804.56ms. Allocated memory was 52.4MB in the beginning and 111.1MB in the end (delta: 58.7MB). Free memory was 27.3MB in the beginning and 40.4MB in the end (delta: -13.1MB). Peak memory consumption was 42.0MB. Max. memory is 16.1GB. [2021-12-15 13:50:17,038 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 13:50:17,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 790.69ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 27.0MB in the beginning and 35.1MB in the end (delta: -8.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2021-12-15 13:50:17,039 INFO L158 Benchmark]: Boogie Procedure Inliner took 258.33ms. Allocated memory is still 73.4MB. Free memory was 35.1MB in the beginning and 47.7MB in the end (delta: -12.6MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-12-15 13:50:17,039 INFO L158 Benchmark]: Boogie Preprocessor took 156.74ms. Allocated memory is still 73.4MB. Free memory was 47.7MB in the beginning and 40.0MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 13:50:17,039 INFO L158 Benchmark]: RCFGBuilder took 6828.77ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 40.0MB in the beginning and 82.8MB in the end (delta: -42.7MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-12-15 13:50:17,039 INFO L158 Benchmark]: TraceAbstraction took 12759.89ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 40.4MB in the end (delta: 41.8MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. [2021-12-15 13:50:17,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 52.4MB. Free memory is still 34.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 790.69ms. Allocated memory was 52.4MB in the beginning and 73.4MB in the end (delta: 21.0MB). Free memory was 27.0MB in the beginning and 35.1MB in the end (delta: -8.1MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 258.33ms. Allocated memory is still 73.4MB. Free memory was 35.1MB in the beginning and 47.7MB in the end (delta: -12.6MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 156.74ms. Allocated memory is still 73.4MB. Free memory was 47.7MB in the beginning and 40.0MB in the end (delta: 7.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 6828.77ms. Allocated memory was 73.4MB in the beginning and 111.1MB in the end (delta: 37.7MB). Free memory was 40.0MB in the beginning and 82.8MB in the end (delta: -42.7MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12759.89ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 40.4MB in the end (delta: 41.8MB). Peak memory consumption was 40.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-15 13:50:17,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable