./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 23:49:45,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 23:49:45,597 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 23:49:45,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 23:49:45,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 23:49:45,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 23:49:45,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 23:49:45,655 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 23:49:45,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 23:49:45,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 23:49:45,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 23:49:45,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 23:49:45,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 23:49:45,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 23:49:45,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 23:49:45,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 23:49:45,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 23:49:45,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 23:49:45,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 23:49:45,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 23:49:45,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 23:49:45,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 23:49:45,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 23:49:45,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 23:49:45,672 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 23:49:45,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 23:49:45,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 23:49:45,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 23:49:45,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 23:49:45,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 23:49:45,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 23:49:45,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 23:49:45,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 23:49:45,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 23:49:45,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 23:49:45,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 23:49:45,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 23:49:45,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 23:49:45,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 23:49:45,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 23:49:45,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 23:49:45,685 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-06 23:49:45,705 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 23:49:45,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 23:49:45,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 23:49:45,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 23:49:45,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 23:49:45,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 23:49:45,708 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 23:49:45,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 23:49:45,709 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 23:49:45,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 23:49:45,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 23:49:45,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 23:49:45,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 23:49:45,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 23:49:45,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 23:49:45,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:49:45,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 23:49:45,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 23:49:45,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 23:49:45,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 23:49:45,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 23:49:45,713 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 23:49:45,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 23:49:45,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 23:49:45,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 23:49:45,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2021-11-06 23:49:45,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 23:49:45,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 23:49:45,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 23:49:45,905 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 23:49:45,907 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 23:49:45,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2021-11-06 23:49:45,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c63990b/7fe42384c81144d5b4c9a08f0e67651e/FLAGba44e7da6 [2021-11-06 23:49:46,385 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 23:49:46,385 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2021-11-06 23:49:46,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c63990b/7fe42384c81144d5b4c9a08f0e67651e/FLAGba44e7da6 [2021-11-06 23:49:46,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c63990b/7fe42384c81144d5b4c9a08f0e67651e [2021-11-06 23:49:46,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 23:49:46,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 23:49:46,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 23:49:46,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 23:49:46,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 23:49:46,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:46,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a025ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46, skipping insertion in model container [2021-11-06 23:49:46,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:46,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 23:49:46,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 23:49:46,764 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2021-11-06 23:49:46,823 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2021-11-06 23:49:46,823 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2021-11-06 23:49:46,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:49:46,844 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 23:49:46,873 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2021-11-06 23:49:46,921 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2021-11-06 23:49:46,922 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2021-11-06 23:49:46,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:49:46,956 INFO L208 MainTranslator]: Completed translation [2021-11-06 23:49:46,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46 WrapperNode [2021-11-06 23:49:46,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 23:49:46,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 23:49:46,959 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 23:49:46,959 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 23:49:46,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:46,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 23:49:47,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 23:49:47,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 23:49:47,036 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 23:49:47,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 23:49:47,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 23:49:47,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 23:49:47,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 23:49:47,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (1/1) ... [2021-11-06 23:49:47,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:49:47,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:47,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 23:49:47,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 23:49:47,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 23:49:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 23:49:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 23:49:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 23:49:47,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 23:49:47,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 23:49:47,937 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-06 23:49:47,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:47 BoogieIcfgContainer [2021-11-06 23:49:47,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 23:49:47,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 23:49:47,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 23:49:47,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 23:49:47,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:49:46" (1/3) ... [2021-11-06 23:49:47,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206df684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:47, skipping insertion in model container [2021-11-06 23:49:47,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:49:46" (2/3) ... [2021-11-06 23:49:47,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206df684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:49:47, skipping insertion in model container [2021-11-06 23:49:47,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:47" (3/3) ... [2021-11-06 23:49:47,946 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-1.i [2021-11-06 23:49:47,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 23:49:47,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 23:49:48,015 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 23:49:48,020 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 23:49:48,020 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 23:49:48,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 23:49:48,044 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:48,044 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:48,045 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:48,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-06 23:49:48,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:48,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953043978] [2021-11-06 23:49:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:48,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:49:48,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:48,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953043978] [2021-11-06 23:49:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953043978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:48,139 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:48,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 23:49:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758414923] [2021-11-06 23:49:48,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 23:49:48,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:48,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 23:49:48,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:49:48,152 INFO L87 Difference]: Start difference. First operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:48,177 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-11-06 23:49:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 23:49:48,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-06 23:49:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:48,186 INFO L225 Difference]: With dead ends: 361 [2021-11-06 23:49:48,187 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 23:49:48,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:49:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 23:49:48,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 23:49:48,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-06 23:49:48,217 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-06 23:49:48,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:48,218 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-06 23:49:48,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,218 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-06 23:49:48,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 23:49:48,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:48,219 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:48,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 23:49:48,219 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:48,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-06 23:49:48,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:48,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268633945] [2021-11-06 23:49:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:48,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:49:48,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:48,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268633945] [2021-11-06 23:49:48,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268633945] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:48,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:48,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:49:48,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198645839] [2021-11-06 23:49:48,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:49:48,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:49:48,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:49:48,271 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:48,529 INFO L93 Difference]: Finished difference Result 382 states and 501 transitions. [2021-11-06 23:49:48,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:49:48,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-06 23:49:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:48,531 INFO L225 Difference]: With dead ends: 382 [2021-11-06 23:49:48,531 INFO L226 Difference]: Without dead ends: 295 [2021-11-06 23:49:48,532 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:49:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-06 23:49:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 179. [2021-11-06 23:49:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 178 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-06 23:49:48,544 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-06 23:49:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:48,544 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-06 23:49:48,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-06 23:49:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:49:48,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:48,546 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:48,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 23:49:48,546 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-06 23:49:48,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:48,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192342371] [2021-11-06 23:49:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:48,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:48,561 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:48,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107312862] [2021-11-06 23:49:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:48,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:48,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:48,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:48,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 23:49:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:48,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:49:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:49:48,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:48,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192342371] [2021-11-06 23:49:48,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:48,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107312862] [2021-11-06 23:49:48,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107312862] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:48,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:48,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:49:48,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318222585] [2021-11-06 23:49:48,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:49:48,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:49:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:49:48,898 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:48,944 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-11-06 23:49:48,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:49:48,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 23:49:48,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:48,946 INFO L225 Difference]: With dead ends: 375 [2021-11-06 23:49:48,946 INFO L226 Difference]: Without dead ends: 200 [2021-11-06 23:49:48,947 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:49:48,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-06 23:49:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-11-06 23:49:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 1.2893401015228427) internal successors, (254), 198 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-11-06 23:49:48,956 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 62 [2021-11-06 23:49:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:48,956 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-11-06 23:49:48,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-11-06 23:49:48,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:49:48,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:48,958 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:48,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:49,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:49,175 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:49,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:49,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1305568807, now seen corresponding path program 1 times [2021-11-06 23:49:49,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:49,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083706087] [2021-11-06 23:49:49,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:49,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:49,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:49,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439302175] [2021-11-06 23:49:49,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:49,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:49,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:49,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:49,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 23:49:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:49,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:49:49,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:49:49,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:49,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083706087] [2021-11-06 23:49:49,436 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:49,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439302175] [2021-11-06 23:49:49,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439302175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:49,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:49,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:49:49,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221128155] [2021-11-06 23:49:49,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:49:49,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:49,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:49:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:49:49,438 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:49,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:49,485 INFO L93 Difference]: Finished difference Result 386 states and 496 transitions. [2021-11-06 23:49:49,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:49:49,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 23:49:49,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:49,486 INFO L225 Difference]: With dead ends: 386 [2021-11-06 23:49:49,487 INFO L226 Difference]: Without dead ends: 191 [2021-11-06 23:49:49,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:49:49,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-11-06 23:49:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2021-11-06 23:49:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 183 states have (on average 1.273224043715847) internal successors, (233), 184 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2021-11-06 23:49:49,492 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 62 [2021-11-06 23:49:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:49,492 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2021-11-06 23:49:49,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2021-11-06 23:49:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:49:49,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:49,494 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:49,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:49,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-06 23:49:49,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:49,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-06 23:49:49,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:49,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556592505] [2021-11-06 23:49:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:49,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:49,721 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:49,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996430263] [2021-11-06 23:49:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:49,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:49,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:49,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:49,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 23:49:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:49,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:49:49,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:49:50,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:50,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556592505] [2021-11-06 23:49:50,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:50,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996430263] [2021-11-06 23:49:50,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996430263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:50,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:50,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:49:50,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316043332] [2021-11-06 23:49:50,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:49:50,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:50,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:49:50,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:49:50,122 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:50,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:50,189 INFO L93 Difference]: Finished difference Result 479 states and 602 transitions. [2021-11-06 23:49:50,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:49:50,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 23:49:50,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:50,191 INFO L225 Difference]: With dead ends: 479 [2021-11-06 23:49:50,191 INFO L226 Difference]: Without dead ends: 298 [2021-11-06 23:49:50,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:49:50,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-06 23:49:50,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 291. [2021-11-06 23:49:50,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 289 states have (on average 1.2664359861591696) internal successors, (366), 290 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:50,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2021-11-06 23:49:50,198 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 62 [2021-11-06 23:49:50,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:50,198 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2021-11-06 23:49:50,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:50,199 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2021-11-06 23:49:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 23:49:50,199 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:50,199 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:50,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:50,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:50,415 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:50,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-06 23:49:50,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:50,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772457183] [2021-11-06 23:49:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:50,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:50,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:50,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [932495793] [2021-11-06 23:49:50,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:50,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:50,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:50,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:50,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 23:49:50,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:50,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:49:50,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:50,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:49:50,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 23:49:50,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 23:49:50,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:50,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772457183] [2021-11-06 23:49:50,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:50,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932495793] [2021-11-06 23:49:50,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932495793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:50,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:50,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:49:50,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160265317] [2021-11-06 23:49:50,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:49:50,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:50,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:49:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:49:50,738 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:50,927 INFO L93 Difference]: Finished difference Result 379 states and 483 transitions. [2021-11-06 23:49:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:49:50,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 23:49:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:50,929 INFO L225 Difference]: With dead ends: 379 [2021-11-06 23:49:50,929 INFO L226 Difference]: Without dead ends: 375 [2021-11-06 23:49:50,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:49:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-06 23:49:50,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 293. [2021-11-06 23:49:50,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.2646048109965635) internal successors, (368), 292 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 368 transitions. [2021-11-06 23:49:50,943 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 368 transitions. Word has length 69 [2021-11-06 23:49:50,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:50,944 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 368 transitions. [2021-11-06 23:49:50,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:50,945 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 368 transitions. [2021-11-06 23:49:50,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 23:49:50,948 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:50,948 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:50,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:51,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:51,160 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:51,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2000986198, now seen corresponding path program 1 times [2021-11-06 23:49:51,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:51,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792958465] [2021-11-06 23:49:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:51,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:51,171 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:51,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519450514] [2021-11-06 23:49:51,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:51,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:51,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:51,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:51,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 23:49:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:51,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:49:51,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 23:49:51,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:51,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792958465] [2021-11-06 23:49:51,515 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:51,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519450514] [2021-11-06 23:49:51,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519450514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:51,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:51,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 23:49:51,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019490241] [2021-11-06 23:49:51,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:49:51,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:49:51,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:49:51,517 INFO L87 Difference]: Start difference. First operand 293 states and 368 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:51,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:51,562 INFO L93 Difference]: Finished difference Result 483 states and 627 transitions. [2021-11-06 23:49:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:49:51,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-06 23:49:51,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:51,564 INFO L225 Difference]: With dead ends: 483 [2021-11-06 23:49:51,564 INFO L226 Difference]: Without dead ends: 335 [2021-11-06 23:49:51,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:49:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-06 23:49:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 333. [2021-11-06 23:49:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 331 states have (on average 1.2326283987915407) internal successors, (408), 332 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 408 transitions. [2021-11-06 23:49:51,570 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 408 transitions. Word has length 103 [2021-11-06 23:49:51,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:51,571 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 408 transitions. [2021-11-06 23:49:51,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:51,571 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 408 transitions. [2021-11-06 23:49:51,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 23:49:51,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:51,572 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:51,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:51,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:51,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:51,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:51,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1973776046, now seen corresponding path program 1 times [2021-11-06 23:49:51,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:51,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237714631] [2021-11-06 23:49:51,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:51,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:51,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:51,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574224480] [2021-11-06 23:49:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:51,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:51,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:51,819 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:51,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 23:49:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:52,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:49:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 23:49:52,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:52,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237714631] [2021-11-06 23:49:52,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:52,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574224480] [2021-11-06 23:49:52,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574224480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:52,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:52,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:49:52,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591461862] [2021-11-06 23:49:52,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:49:52,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:52,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:49:52,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:49:52,190 INFO L87 Difference]: Start difference. First operand 333 states and 408 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:52,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:52,245 INFO L93 Difference]: Finished difference Result 498 states and 622 transitions. [2021-11-06 23:49:52,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:49:52,245 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-06 23:49:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:52,246 INFO L225 Difference]: With dead ends: 498 [2021-11-06 23:49:52,246 INFO L226 Difference]: Without dead ends: 310 [2021-11-06 23:49:52,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:49:52,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-06 23:49:52,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2021-11-06 23:49:52,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 303 states have (on average 1.2079207920792079) internal successors, (366), 304 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:52,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 366 transitions. [2021-11-06 23:49:52,252 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 366 transitions. Word has length 103 [2021-11-06 23:49:52,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:52,252 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 366 transitions. [2021-11-06 23:49:52,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 366 transitions. [2021-11-06 23:49:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-06 23:49:52,253 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:52,253 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:52,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:52,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:52,463 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:52,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1090927200, now seen corresponding path program 1 times [2021-11-06 23:49:52,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:52,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682440567] [2021-11-06 23:49:52,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:52,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:52,475 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:52,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13870504] [2021-11-06 23:49:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:52,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:52,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:52,476 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:52,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-06 23:49:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:52,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:49:52,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:52,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:49:52,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:52,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682440567] [2021-11-06 23:49:52,894 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:52,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13870504] [2021-11-06 23:49:52,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13870504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 23:49:52,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:52,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 23:49:52,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704249685] [2021-11-06 23:49:52,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:49:52,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 23:49:52,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:49:52,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:49:52,896 INFO L87 Difference]: Start difference. First operand 305 states and 366 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:53,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:49:53,052 INFO L93 Difference]: Finished difference Result 653 states and 790 transitions. [2021-11-06 23:49:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:49:53,053 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-06 23:49:53,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:49:53,054 INFO L225 Difference]: With dead ends: 653 [2021-11-06 23:49:53,054 INFO L226 Difference]: Without dead ends: 396 [2021-11-06 23:49:53,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:49:53,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-06 23:49:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 389. [2021-11-06 23:49:53,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 387 states have (on average 1.2144702842377262) internal successors, (470), 388 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 470 transitions. [2021-11-06 23:49:53,089 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 470 transitions. Word has length 103 [2021-11-06 23:49:53,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:49:53,090 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 470 transitions. [2021-11-06 23:49:53,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:49:53,090 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 470 transitions. [2021-11-06 23:49:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-06 23:49:53,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:49:53,091 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:53,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:53,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:53,304 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:49:53,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:49:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash 541561274, now seen corresponding path program 1 times [2021-11-06 23:49:53,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 23:49:53,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101119803] [2021-11-06 23:49:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:53,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 23:49:53,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 23:49:53,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477044482] [2021-11-06 23:49:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:49:53,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 23:49:53,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:49:53,317 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 23:49:53,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-06 23:49:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:49:53,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-06 23:49:53,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:49:53,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:49:53,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-06 23:49:53,659 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-06 23:49:53,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-06 23:49:53,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:53,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:53,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-06 23:49:54,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-06 23:49:54,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 44 [2021-11-06 23:49:54,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 54 [2021-11-06 23:49:54,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-06 23:49:54,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:54,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2021-11-06 23:49:54,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2021-11-06 23:49:54,591 INFO L354 Elim1Store]: treesize reduction 70, result has 23.1 percent of original size [2021-11-06 23:49:54,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 52 [2021-11-06 23:49:55,835 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-06 23:49:55,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2853 treesize of output 2296 [2021-11-06 23:49:55,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:55,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:55,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-06 23:49:59,719 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-06 23:49:59,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3322 treesize of output 1825 [2021-11-06 23:49:59,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 23:49:59,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101119803] [2021-11-06 23:49:59,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 23:49:59,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477044482] [2021-11-06 23:49:59,759 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-06 23:49:59,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:49:59,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-06 23:49:59,760 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-06 23:49:59,760 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-06 23:49:59,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 23:49:59,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-06 23:49:59,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-06 23:49:59,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-06 23:49:59,982 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:49:59,983 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-06 23:50:00,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:50:00 BoogieIcfgContainer [2021-11-06 23:50:00,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-06 23:50:00,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-06 23:50:00,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-06 23:50:00,011 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-06 23:50:00,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:49:47" (3/4) ... [2021-11-06 23:50:00,015 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-06 23:50:00,015 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-06 23:50:00,015 INFO L168 Benchmark]: Toolchain (without parser) took 13596.56 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 83.2 MB in the beginning and 118.0 MB in the end (delta: -34.8 MB). Peak memory consumption was 56.7 MB. Max. memory is 16.1 GB. [2021-11-06 23:50:00,016 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 75.5 MB. Free memory was 34.8 MB in the beginning and 34.7 MB in the end (delta: 36.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 23:50:00,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 538.04 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 73.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-06 23:50:00,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.75 ms. Allocated memory is still 119.5 MB. Free memory was 73.9 MB in the beginning and 67.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-06 23:50:00,017 INFO L168 Benchmark]: Boogie Preprocessor took 79.88 ms. Allocated memory is still 119.5 MB. Free memory was 67.0 MB in the beginning and 59.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-06 23:50:00,017 INFO L168 Benchmark]: RCFGBuilder took 821.90 ms. Allocated memory is still 119.5 MB. Free memory was 59.8 MB in the beginning and 47.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2021-11-06 23:50:00,018 INFO L168 Benchmark]: TraceAbstraction took 12070.31 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 46.9 MB in the beginning and 118.0 MB in the end (delta: -71.1 MB). Peak memory consumption was 87.0 MB. Max. memory is 16.1 GB. [2021-11-06 23:50:00,018 INFO L168 Benchmark]: Witness Printer took 4.47 ms. Allocated memory is still 211.8 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-06 23:50:00,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 75.5 MB. Free memory was 34.8 MB in the beginning and 34.7 MB in the end (delta: 36.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 538.04 ms. Allocated memory is still 119.5 MB. Free memory was 83.0 MB in the beginning and 73.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.75 ms. Allocated memory is still 119.5 MB. Free memory was 73.9 MB in the beginning and 67.0 MB in the end (delta: 6.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.88 ms. Allocated memory is still 119.5 MB. Free memory was 67.0 MB in the beginning and 59.8 MB in the end (delta: 7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 821.90 ms. Allocated memory is still 119.5 MB. Free memory was 59.8 MB in the beginning and 47.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12070.31 ms. Allocated memory was 119.5 MB in the beginning and 211.8 MB in the end (delta: 92.3 MB). Free memory was 46.9 MB in the beginning and 118.0 MB in the end (delta: -71.1 MB). Peak memory consumption was 87.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.47 ms. Allocated memory is still 211.8 MB. Free memory is still 118.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 730]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 725, overapproximation of bitwiseAnd at line 725. Possible FailurePath: [L713] int i; [L714] example_user_t *user, *tmp, *users=((void *)0); [L715] i=0 [L715] EXPR \read(i) [L715] COND TRUE i<1000 [L716] user = (example_user_t*)malloc(sizeof(example_user_t)) [L717] COND FALSE !(user == ((void *)0)) [L720] EXPR \read(i) [L720] user->id = i [L721] EXPR \read(i) [L721] EXPR \read(i) [L721] user->cookie = i*i [L722] unsigned _ha_hashv; [L722] unsigned _hj_i,_hj_j,_hj_k; [L722] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L722] _ha_hashv = 0xfeedbeefu [L722] EXPR _hj_j = 0x9e3779b9u [L722] _hj_i = _hj_j = 0x9e3779b9u [L722] _hj_k = (unsigned)(sizeof(int)) [L722] COND FALSE !(_hj_k >= 12U) [L722] _ha_hashv += (unsigned)(sizeof(int)) [L722] case 11: [L722] case 10: [L722] case 9: [L722] case 8: [L722] case 7: [L722] case 6: [L722] case 5: [L722] case 4: [L722] EXPR _hj_key[3] [L722] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L722] case 3: [L722] EXPR _hj_key[2] [L722] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L722] case 2: [L722] EXPR _hj_key[1] [L722] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L722] case 1: [L722] EXPR _hj_key[0] [L722] _hj_i += _hj_key[0] [L722] _hj_i -= _hj_j [L722] _hj_i -= _ha_hashv [L722] _hj_i ^= ( _ha_hashv >> 13 ) [L722] _hj_j -= _ha_hashv [L722] _hj_j -= _hj_i [L722] _hj_j ^= ( _hj_i << 8 ) [L722] _ha_hashv -= _hj_i [L722] _ha_hashv -= _hj_j [L722] _ha_hashv ^= ( _hj_j >> 13 ) [L722] _hj_i -= _hj_j [L722] _hj_i -= _ha_hashv [L722] _hj_i ^= ( _ha_hashv >> 12 ) [L722] _hj_j -= _ha_hashv [L722] _hj_j -= _hj_i [L722] _hj_j ^= ( _hj_i << 16 ) [L722] _ha_hashv -= _hj_i [L722] _ha_hashv -= _hj_j [L722] _ha_hashv ^= ( _hj_j >> 5 ) [L722] _hj_i -= _hj_j [L722] _hj_i -= _ha_hashv [L722] _hj_i ^= ( _ha_hashv >> 3 ) [L722] _hj_j -= _ha_hashv [L722] _hj_j -= _hj_i [L722] _hj_j ^= ( _hj_i << 10 ) [L722] _ha_hashv -= _hj_i [L722] _ha_hashv -= _hj_j [L722] _ha_hashv ^= ( _hj_j >> 15 ) [L722] (user)->hh.hashv = (_ha_hashv) [L722] (user)->hh.key = (char*) (&((user)->id)) [L722] (user)->hh.keylen = (unsigned) (sizeof(int)) [L722] COND TRUE !(users) [L722] (user)->hh.next = ((void *)0) [L722] (user)->hh.prev = ((void *)0) [L722] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L722] EXPR (user)->hh.tbl [L722] COND FALSE !(!(user)->hh.tbl) [L722] (user)->hh.tbl [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->tail = &((user)->hh) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->num_buckets = 32U [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->log2_num_buckets = 5U [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->signature = 0xa0111fe1u [L722] EXPR (user)->hh.tbl [L722] EXPR (user)->hh.tbl->buckets [L722] COND FALSE !(!(user)->hh.tbl->buckets) [L722] EXPR (user)->hh.tbl [L722] (user)->hh.tbl->buckets [L722] (users) = (user) [L722] unsigned _ha_bkt; [L722] EXPR (users)->hh.tbl [L722] EXPR (users)->hh.tbl->num_items [L722] (users)->hh.tbl->num_items++ [L722] EXPR (users)->hh.tbl [L722] EXPR (users)->hh.tbl->num_buckets [L722] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L722] EXPR (users)->hh.tbl [L722] EXPR (users)->hh.tbl->buckets [L722] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L722] EXPR _ha_head->count [L722] _ha_head->count++ [L722] EXPR _ha_head->hh_head [L722] (&(user)->hh)->hh_next = _ha_head->hh_head [L722] (&(user)->hh)->hh_prev = ((void *)0) [L722] EXPR _ha_head->hh_head [L722] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L722] _ha_head->hh_head = (&(user)->hh) [L722] EXPR _ha_head->count [L722] EXPR _ha_head->expand_mult [L722] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L722] EXPR (&(user)->hh)->tbl [L722] EXPR (&(user)->hh)->tbl->noexpand [L722] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L722] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L715] EXPR \read(i) [L715] i++ [L715] EXPR \read(i) [L715] COND FALSE !(i<1000) [L724] i=0 [L724] EXPR \read(i) [L724] COND TRUE i<1000 [L725] unsigned _hf_hashv; [L725] unsigned _hj_i,_hj_j,_hj_k; [L725] unsigned const char *_hj_key=(unsigned const char*)(&i); [L725] _hf_hashv = 0xfeedbeefu [L725] EXPR _hj_j = 0x9e3779b9u [L725] _hj_i = _hj_j = 0x9e3779b9u [L725] _hj_k = (unsigned)(sizeof(int)) [L725] COND FALSE !(_hj_k >= 12U) [L725] _hf_hashv += (unsigned)(sizeof(int)) [L725] case 11: [L725] case 10: [L725] case 9: [L725] case 8: [L725] case 7: [L725] case 6: [L725] case 5: [L725] case 4: [L725] EXPR _hj_key[3] [L725] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L725] case 3: [L725] EXPR _hj_key[2] [L725] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L725] case 2: [L725] EXPR _hj_key[1] [L725] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L725] case 1: [L725] EXPR _hj_key[0] [L725] _hj_i += _hj_key[0] [L725] _hj_i -= _hj_j [L725] _hj_i -= _hf_hashv [L725] _hj_i ^= ( _hf_hashv >> 13 ) [L725] _hj_j -= _hf_hashv [L725] _hj_j -= _hj_i [L725] _hj_j ^= ( _hj_i << 8 ) [L725] _hf_hashv -= _hj_i [L725] _hf_hashv -= _hj_j [L725] _hf_hashv ^= ( _hj_j >> 13 ) [L725] _hj_i -= _hj_j [L725] _hj_i -= _hf_hashv [L725] _hj_i ^= ( _hf_hashv >> 12 ) [L725] _hj_j -= _hf_hashv [L725] _hj_j -= _hj_i [L725] _hj_j ^= ( _hj_i << 16 ) [L725] _hf_hashv -= _hj_i [L725] _hf_hashv -= _hj_j [L725] _hf_hashv ^= ( _hj_j >> 5 ) [L725] _hj_i -= _hj_j [L725] _hj_i -= _hf_hashv [L725] _hj_i ^= ( _hf_hashv >> 3 ) [L725] _hj_j -= _hf_hashv [L725] _hj_j -= _hj_i [L725] _hj_j ^= ( _hj_i << 10 ) [L725] _hf_hashv -= _hj_i [L725] _hf_hashv -= _hj_j [L725] _hf_hashv ^= ( _hj_j >> 15 ) [L725] (tmp) = ((void *)0) [L725] COND TRUE \read(*users) [L725] unsigned _hf_bkt; [L725] EXPR (users)->hh.tbl [L725] EXPR (users)->hh.tbl->num_buckets [L725] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L725] EXPR (users)->hh.tbl [L725] EXPR (users)->hh.tbl->buckets [L725] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L725] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L725] (tmp) = ((void *)0) [L725] COND FALSE !((tmp) != ((void *)0)) [L726] COND FALSE !(tmp != ((void *)0)) [L730] reach_error() - UnprovableResult [Line: 734]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 182 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1968 SDtfs, 1143 SDslu, 1958 SDs, 0 SdLazy, 561 SolverSat, 119 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 569 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=389occurred in iteration=9, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 226 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 692 NumberOfCodeBlocks, 692 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 573 ConstructedInterpolants, 0 QuantifiedInterpolants, 1106 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2243 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-06 23:50:00,050 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_OAT_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 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 23:50:01,611 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 23:50:01,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 23:50:01,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 23:50:01,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 23:50:01,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 23:50:01,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 23:50:01,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 23:50:01,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 23:50:01,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 23:50:01,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 23:50:01,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 23:50:01,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 23:50:01,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 23:50:01,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 23:50:01,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 23:50:01,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 23:50:01,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 23:50:01,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 23:50:01,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 23:50:01,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 23:50:01,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 23:50:01,648 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 23:50:01,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 23:50:01,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 23:50:01,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 23:50:01,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 23:50:01,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 23:50:01,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 23:50:01,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 23:50:01,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 23:50:01,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 23:50:01,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 23:50:01,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 23:50:01,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 23:50:01,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 23:50:01,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 23:50:01,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 23:50:01,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 23:50:01,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 23:50:01,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 23:50:01,664 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-06 23:50:01,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 23:50:01,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 23:50:01,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 23:50:01,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 23:50:01,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 23:50:01,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 23:50:01,693 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 23:50:01,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 23:50:01,693 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-06 23:50:01,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-06 23:50:01,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 23:50:01,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 23:50:01,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 23:50:01,694 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 23:50:01,694 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-06 23:50:01,694 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 23:50:01,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 23:50:01,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:50:01,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 23:50:01,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 23:50:01,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 23:50:01,702 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-06 23:50:01,703 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-06 23:50:01,703 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 23:50:01,703 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 23:50:01,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 23:50:01,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 23:50:01,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-06 23:50:01,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c0dee81707c82be8d9645ea65556f17c2a25b7864c310b805b07f657c0bc23 [2021-11-06 23:50:01,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 23:50:01,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 23:50:01,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 23:50:01,963 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 23:50:01,963 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 23:50:01,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2021-11-06 23:50:02,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a2283c3/8e2e936cbbce44b7b3af55bf83863681/FLAG5993cc12f [2021-11-06 23:50:02,393 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 23:50:02,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i [2021-11-06 23:50:02,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a2283c3/8e2e936cbbce44b7b3af55bf83863681/FLAG5993cc12f [2021-11-06 23:50:02,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a2283c3/8e2e936cbbce44b7b3af55bf83863681 [2021-11-06 23:50:02,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 23:50:02,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 23:50:02,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 23:50:02,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 23:50:02,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 23:50:02,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:50:02" (1/1) ... [2021-11-06 23:50:02,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24794688 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:02, skipping insertion in model container [2021-11-06 23:50:02,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:50:02" (1/1) ... [2021-11-06 23:50:02,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 23:50:02,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 23:50:03,109 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2021-11-06 23:50:03,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2021-11-06 23:50:03,230 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2021-11-06 23:50:03,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:50:03,249 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 23:50:03,282 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[33021,33034] [2021-11-06 23:50:03,362 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44124,44137] [2021-11-06 23:50:03,363 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test7-1.i[44245,44258] [2021-11-06 23:50:03,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 23:50:03,393 INFO L208 MainTranslator]: Completed translation [2021-11-06 23:50:03,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03 WrapperNode [2021-11-06 23:50:03,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 23:50:03,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 23:50:03,395 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 23:50:03,395 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 23:50:03,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 23:50:03,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 23:50:03,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 23:50:03,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 23:50:03,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,522 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 23:50:03,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 23:50:03,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 23:50:03,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 23:50:03,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (1/1) ... [2021-11-06 23:50:03,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 23:50:03,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 23:50:03,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 23:50:03,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 23:50:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-06 23:50:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-06 23:50:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 23:50:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 23:50:03,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 23:50:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 23:50:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 23:50:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 23:50:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-06 23:50:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-06 23:50:03,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 23:50:03,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 23:50:06,115 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 23:50:06,115 INFO L299 CfgBuilder]: Removed 73 assume(true) statements. [2021-11-06 23:50:06,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:50:06 BoogieIcfgContainer [2021-11-06 23:50:06,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 23:50:06,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 23:50:06,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 23:50:06,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 23:50:06,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:50:02" (1/3) ... [2021-11-06 23:50:06,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4393794a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:50:06, skipping insertion in model container [2021-11-06 23:50:06,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:50:03" (2/3) ... [2021-11-06 23:50:06,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4393794a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:50:06, skipping insertion in model container [2021-11-06 23:50:06,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:50:06" (3/3) ... [2021-11-06 23:50:06,122 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test7-1.i [2021-11-06 23:50:06,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 23:50:06,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-06 23:50:06,153 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 23:50:06,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 23:50:06,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-06 23:50:06,167 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:06,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-06 23:50:06,170 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:06,170 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:06,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:06,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1366407864, now seen corresponding path program 1 times [2021-11-06 23:50:06,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:06,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819679893] [2021-11-06 23:50:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:06,183 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:06,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:06,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:06,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-06 23:50:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:06,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-06 23:50:06,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:06,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:06,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:06,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819679893] [2021-11-06 23:50:06,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819679893] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:06,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:06,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-06 23:50:06,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357430703] [2021-11-06 23:50:06,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 23:50:06,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 23:50:06,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:50:06,372 INFO L87 Difference]: Start difference. First operand has 182 states, 179 states have (on average 1.7094972067039107) internal successors, (306), 181 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:06,392 INFO L93 Difference]: Finished difference Result 361 states and 609 transitions. [2021-11-06 23:50:06,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 23:50:06,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-06 23:50:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:06,402 INFO L225 Difference]: With dead ends: 361 [2021-11-06 23:50:06,403 INFO L226 Difference]: Without dead ends: 177 [2021-11-06 23:50:06,404 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 23:50:06,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-06 23:50:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-06 23:50:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 176 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 232 transitions. [2021-11-06 23:50:06,429 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 232 transitions. Word has length 8 [2021-11-06 23:50:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:06,429 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 232 transitions. [2021-11-06 23:50:06,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 232 transitions. [2021-11-06 23:50:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-06 23:50:06,430 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:06,430 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:06,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:06,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:06,641 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:06,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1136278917, now seen corresponding path program 1 times [2021-11-06 23:50:06,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:06,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118730587] [2021-11-06 23:50:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:06,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:06,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:06,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:06,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-06 23:50:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:06,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:50:06,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:06,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:50:06,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 23:50:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:06,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:06,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:06,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118730587] [2021-11-06 23:50:06,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118730587] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:06,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:06,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 23:50:06,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358468705] [2021-11-06 23:50:06,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 23:50:06,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:06,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 23:50:06,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:50:06,914 INFO L87 Difference]: Start difference. First operand 177 states and 232 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:10,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:10,385 INFO L93 Difference]: Finished difference Result 468 states and 614 transitions. [2021-11-06 23:50:10,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 23:50:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-06 23:50:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:10,387 INFO L225 Difference]: With dead ends: 468 [2021-11-06 23:50:10,388 INFO L226 Difference]: Without dead ends: 381 [2021-11-06 23:50:10,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 23:50:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-11-06 23:50:10,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 179. [2021-11-06 23:50:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.3220338983050848) internal successors, (234), 178 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2021-11-06 23:50:10,400 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 10 [2021-11-06 23:50:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:10,401 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2021-11-06 23:50:10,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2021-11-06 23:50:10,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:50:10,406 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:10,406 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:10,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:10,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:10,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2095912151, now seen corresponding path program 1 times [2021-11-06 23:50:10,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:10,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213759864] [2021-11-06 23:50:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:10,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:10,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:10,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:10,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-06 23:50:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:50:10,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:10,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:11,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:11,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213759864] [2021-11-06 23:50:11,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213759864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:11,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:11,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-06 23:50:11,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889361820] [2021-11-06 23:50:11,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:50:11,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:11,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:50:11,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:50:11,067 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:11,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:11,148 INFO L93 Difference]: Finished difference Result 363 states and 476 transitions. [2021-11-06 23:50:11,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:50:11,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 23:50:11,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:11,149 INFO L225 Difference]: With dead ends: 363 [2021-11-06 23:50:11,149 INFO L226 Difference]: Without dead ends: 188 [2021-11-06 23:50:11,150 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:50:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-06 23:50:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2021-11-06 23:50:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.2722222222222221) internal successors, (229), 181 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 229 transitions. [2021-11-06 23:50:11,156 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 229 transitions. Word has length 62 [2021-11-06 23:50:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:11,156 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 229 transitions. [2021-11-06 23:50:11,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 229 transitions. [2021-11-06 23:50:11,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-06 23:50:11,157 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:11,157 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:11,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:11,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:11,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:11,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1777715509, now seen corresponding path program 1 times [2021-11-06 23:50:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:11,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535319577] [2021-11-06 23:50:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:11,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:11,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:11,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-06 23:50:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:11,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:50:11,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:11,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:12,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:12,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535319577] [2021-11-06 23:50:12,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1535319577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:12,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:12,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-06 23:50:12,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117494769] [2021-11-06 23:50:12,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 23:50:12,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 23:50:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:50:12,137 INFO L87 Difference]: Start difference. First operand 182 states and 229 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:12,730 INFO L93 Difference]: Finished difference Result 470 states and 590 transitions. [2021-11-06 23:50:12,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:50:12,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-06 23:50:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:12,732 INFO L225 Difference]: With dead ends: 470 [2021-11-06 23:50:12,732 INFO L226 Difference]: Without dead ends: 292 [2021-11-06 23:50:12,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 23:50:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-06 23:50:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 285. [2021-11-06 23:50:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 283 states have (on average 1.265017667844523) internal successors, (358), 284 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:12,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2021-11-06 23:50:12,752 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 62 [2021-11-06 23:50:12,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:12,753 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2021-11-06 23:50:12,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:12,753 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2021-11-06 23:50:12,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-06 23:50:12,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:12,754 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:12,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:12,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:12,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:12,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:12,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1300403396, now seen corresponding path program 1 times [2021-11-06 23:50:12,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:12,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357508181] [2021-11-06 23:50:12,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:12,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:12,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:12,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-06 23:50:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:13,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:50:13,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:13,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 23:50:13,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:13,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357508181] [2021-11-06 23:50:13,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357508181] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:13,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:13,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-06 23:50:13,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699138614] [2021-11-06 23:50:13,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:50:13,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:50:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:50:13,397 INFO L87 Difference]: Start difference. First operand 285 states and 358 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:13,469 INFO L93 Difference]: Finished difference Result 528 states and 673 transitions. [2021-11-06 23:50:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:50:13,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-06 23:50:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:13,470 INFO L225 Difference]: With dead ends: 528 [2021-11-06 23:50:13,470 INFO L226 Difference]: Without dead ends: 288 [2021-11-06 23:50:13,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:50:13,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-06 23:50:13,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-06 23:50:13,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 286 states have (on average 1.2622377622377623) internal successors, (361), 287 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 361 transitions. [2021-11-06 23:50:13,477 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 361 transitions. Word has length 69 [2021-11-06 23:50:13,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:13,478 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 361 transitions. [2021-11-06 23:50:13,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:13,478 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 361 transitions. [2021-11-06 23:50:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-06 23:50:13,491 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:13,491 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:13,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:13,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:13,692 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash 982130832, now seen corresponding path program 1 times [2021-11-06 23:50:13,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:13,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994777837] [2021-11-06 23:50:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:13,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:13,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:13,695 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:13,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-06 23:50:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:13,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:50:13,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 23:50:14,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-06 23:50:14,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:14,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994777837] [2021-11-06 23:50:14,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994777837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:50:14,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:50:14,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-06 23:50:14,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102592553] [2021-11-06 23:50:14,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 23:50:14,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 23:50:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 23:50:14,258 INFO L87 Difference]: Start difference. First operand 288 states and 361 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:14,469 INFO L93 Difference]: Finished difference Result 537 states and 685 transitions. [2021-11-06 23:50:14,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 23:50:14,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-06 23:50:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:14,471 INFO L225 Difference]: With dead ends: 537 [2021-11-06 23:50:14,471 INFO L226 Difference]: Without dead ends: 294 [2021-11-06 23:50:14,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-06 23:50:14,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-06 23:50:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2021-11-06 23:50:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.2568493150684932) internal successors, (367), 293 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:14,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 367 transitions. [2021-11-06 23:50:14,478 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 367 transitions. Word has length 72 [2021-11-06 23:50:14,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:14,478 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 367 transitions. [2021-11-06 23:50:14,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:14,478 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 367 transitions. [2021-11-06 23:50:14,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 23:50:14,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:14,479 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:14,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:14,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:14,690 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:14,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:14,691 INFO L85 PathProgramCache]: Analyzing trace with hash 2058438736, now seen corresponding path program 2 times [2021-11-06 23:50:14,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:14,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915087377] [2021-11-06 23:50:14,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:50:14,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:14,693 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:14,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-06 23:50:14,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:50:14,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:50:14,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:50:14,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:15,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-06 23:50:15,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-06 23:50:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 23:50:15,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-06 23:50:15,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:15,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915087377] [2021-11-06 23:50:15,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915087377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:15,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:15,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-06 23:50:15,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911234164] [2021-11-06 23:50:15,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 23:50:15,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 23:50:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:50:15,165 INFO L87 Difference]: Start difference. First operand 294 states and 367 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:16,888 INFO L93 Difference]: Finished difference Result 448 states and 571 transitions. [2021-11-06 23:50:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-06 23:50:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 23:50:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:16,890 INFO L225 Difference]: With dead ends: 448 [2021-11-06 23:50:16,890 INFO L226 Difference]: Without dead ends: 444 [2021-11-06 23:50:16,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 23:50:16,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-06 23:50:16,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 365. [2021-11-06 23:50:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 1.2754820936639117) internal successors, (463), 364 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:16,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 463 transitions. [2021-11-06 23:50:16,898 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 463 transitions. Word has length 78 [2021-11-06 23:50:16,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:16,898 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 463 transitions. [2021-11-06 23:50:16,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:16,898 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 463 transitions. [2021-11-06 23:50:16,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 23:50:16,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:16,899 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:16,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:17,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:17,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:17,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1224331210, now seen corresponding path program 1 times [2021-11-06 23:50:17,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:17,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100823643] [2021-11-06 23:50:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:17,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:17,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:17,110 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:17,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-06 23:50:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:17,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-06 23:50:17,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 23:50:17,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-06 23:50:18,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:18,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100823643] [2021-11-06 23:50:18,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100823643] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:50:18,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:50:18,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-06 23:50:18,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847283989] [2021-11-06 23:50:18,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-06 23:50:18,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:18,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-06 23:50:18,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-06 23:50:18,149 INFO L87 Difference]: Start difference. First operand 365 states and 463 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:19,416 INFO L93 Difference]: Finished difference Result 697 states and 901 transitions. [2021-11-06 23:50:19,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-06 23:50:19,417 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-06 23:50:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:19,418 INFO L225 Difference]: With dead ends: 697 [2021-11-06 23:50:19,418 INFO L226 Difference]: Without dead ends: 377 [2021-11-06 23:50:19,419 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-06 23:50:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-06 23:50:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-06 23:50:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 375 states have (on average 1.2666666666666666) internal successors, (475), 376 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 475 transitions. [2021-11-06 23:50:19,431 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 475 transitions. Word has length 112 [2021-11-06 23:50:19,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:19,432 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 475 transitions. [2021-11-06 23:50:19,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 475 transitions. [2021-11-06 23:50:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 23:50:19,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:19,433 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:19,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:19,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:19,647 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:19,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:19,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2016870474, now seen corresponding path program 2 times [2021-11-06 23:50:19,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:19,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424035801] [2021-11-06 23:50:19,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:50:19,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:19,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:19,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:19,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-06 23:50:19,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:50:19,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:50:19,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:50:19,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:20,123 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-06 23:50:20,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:20,299 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-06 23:50:20,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:20,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424035801] [2021-11-06 23:50:20,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424035801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:20,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:20,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-06 23:50:20,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096248031] [2021-11-06 23:50:20,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:50:20,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:50:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:50:20,301 INFO L87 Difference]: Start difference. First operand 377 states and 475 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:20,378 INFO L93 Difference]: Finished difference Result 603 states and 784 transitions. [2021-11-06 23:50:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:50:20,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 23:50:20,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:20,380 INFO L225 Difference]: With dead ends: 603 [2021-11-06 23:50:20,380 INFO L226 Difference]: Without dead ends: 389 [2021-11-06 23:50:20,381 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-06 23:50:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-06 23:50:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 386. [2021-11-06 23:50:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 384 states have (on average 1.1979166666666667) internal successors, (460), 385 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:20,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 460 transitions. [2021-11-06 23:50:20,389 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 460 transitions. Word has length 124 [2021-11-06 23:50:20,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:20,389 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 460 transitions. [2021-11-06 23:50:20,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:20,389 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 460 transitions. [2021-11-06 23:50:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-06 23:50:20,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:20,390 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:20,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:20,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:20,599 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:20,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1333208362, now seen corresponding path program 1 times [2021-11-06 23:50:20,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:20,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851477547] [2021-11-06 23:50:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:20,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:20,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:20,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:20,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-06 23:50:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:21,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-06 23:50:21,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:21,503 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 23:50:21,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-06 23:50:22,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:22,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851477547] [2021-11-06 23:50:22,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851477547] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:50:22,501 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:50:22,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-06 23:50:22,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74983267] [2021-11-06 23:50:22,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-06 23:50:22,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-06 23:50:22,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-06 23:50:22,503 INFO L87 Difference]: Start difference. First operand 386 states and 460 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:30,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:30,756 INFO L93 Difference]: Finished difference Result 751 states and 919 transitions. [2021-11-06 23:50:30,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-06 23:50:30,757 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-06 23:50:30,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:30,758 INFO L225 Difference]: With dead ends: 751 [2021-11-06 23:50:30,759 INFO L226 Difference]: Without dead ends: 410 [2021-11-06 23:50:30,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-06 23:50:30,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-06 23:50:30,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2021-11-06 23:50:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.1862745098039216) internal successors, (484), 409 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 484 transitions. [2021-11-06 23:50:30,768 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 484 transitions. Word has length 124 [2021-11-06 23:50:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 484 transitions. [2021-11-06 23:50:30,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 484 transitions. [2021-11-06 23:50:30,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 23:50:30,770 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:30,770 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:30,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:30,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:30,982 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:30,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2039593942, now seen corresponding path program 2 times [2021-11-06 23:50:30,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:30,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349302526] [2021-11-06 23:50:30,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:50:30,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:30,984 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:30,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-06 23:50:31,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-06 23:50:31,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:50:31,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-06 23:50:31,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:31,599 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-06 23:50:31,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-06 23:50:31,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:31,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349302526] [2021-11-06 23:50:31,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349302526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:50:31,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:50:31,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 5 [2021-11-06 23:50:31,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830034433] [2021-11-06 23:50:31,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 23:50:31,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:31,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 23:50:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:50:31,859 INFO L87 Difference]: Start difference. First operand 410 states and 484 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:31,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:50:31,906 INFO L93 Difference]: Finished difference Result 611 states and 731 transitions. [2021-11-06 23:50:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 23:50:31,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-06 23:50:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:50:31,908 INFO L225 Difference]: With dead ends: 611 [2021-11-06 23:50:31,908 INFO L226 Difference]: Without dead ends: 413 [2021-11-06 23:50:31,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:50:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-06 23:50:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 410. [2021-11-06 23:50:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 408 states have (on average 1.1642156862745099) internal successors, (475), 409 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:31,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 475 transitions. [2021-11-06 23:50:31,917 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 475 transitions. Word has length 148 [2021-11-06 23:50:31,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:50:31,917 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 475 transitions. [2021-11-06 23:50:31,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:50:31,917 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 475 transitions. [2021-11-06 23:50:31,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 23:50:31,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:50:31,918 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:50:31,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-06 23:50:32,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:50:32,136 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:50:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:50:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207916, now seen corresponding path program 1 times [2021-11-06 23:50:32,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:50:32,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083609166] [2021-11-06 23:50:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:50:32,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:50:32,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:50:32,138 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:50:32,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-06 23:50:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:50:32,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-06 23:50:32,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:50:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-06 23:50:33,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:50:36,186 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-06 23:50:36,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:50:36,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083609166] [2021-11-06 23:50:36,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083609166] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:50:36,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:50:36,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-06 23:50:36,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677439477] [2021-11-06 23:50:36,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-06 23:50:36,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:50:36,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-06 23:50:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-06 23:50:36,190 INFO L87 Difference]: Start difference. First operand 410 states and 475 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:51:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:51:36,846 INFO L93 Difference]: Finished difference Result 805 states and 961 transitions. [2021-11-06 23:51:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-06 23:51:36,847 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-06 23:51:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:51:36,849 INFO L225 Difference]: With dead ends: 805 [2021-11-06 23:51:36,849 INFO L226 Difference]: Without dead ends: 440 [2021-11-06 23:51:36,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-06 23:51:36,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-06 23:51:36,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2021-11-06 23:51:36,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 438 states have (on average 1.1529680365296804) internal successors, (505), 439 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:51:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 505 transitions. [2021-11-06 23:51:36,865 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 505 transitions. Word has length 148 [2021-11-06 23:51:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:51:36,865 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 505 transitions. [2021-11-06 23:51:36,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:51:36,865 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 505 transitions. [2021-11-06 23:51:36,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-06 23:51:36,866 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:51:36,867 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:51:36,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-06 23:51:37,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:51:37,083 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:51:37,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:51:37,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843980, now seen corresponding path program 2 times [2021-11-06 23:51:37,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:51:37,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009840382] [2021-11-06 23:51:37,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:51:37,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:51:37,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:51:37,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:51:37,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-06 23:51:38,315 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 23:51:38,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:51:38,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-06 23:51:38,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:51:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:51:39,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:51:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:51:43,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:51:43,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009840382] [2021-11-06 23:51:43,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009840382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:51:43,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:51:43,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-06 23:51:43,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475596995] [2021-11-06 23:51:43,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-06 23:51:43,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:51:43,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-06 23:51:43,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-06 23:51:43,298 INFO L87 Difference]: Start difference. First operand 440 states and 505 transitions. Second operand has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:52:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:52:49,750 INFO L93 Difference]: Finished difference Result 868 states and 1027 transitions. [2021-11-06 23:52:49,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-06 23:52:49,751 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-06 23:52:49,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:52:49,752 INFO L225 Difference]: With dead ends: 868 [2021-11-06 23:52:49,752 INFO L226 Difference]: Without dead ends: 473 [2021-11-06 23:52:49,754 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-06 23:52:49,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-06 23:52:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2021-11-06 23:52:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1422505307855626) internal successors, (538), 472 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:52:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 538 transitions. [2021-11-06 23:52:49,774 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 538 transitions. Word has length 178 [2021-11-06 23:52:49,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:52:49,774 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 538 transitions. [2021-11-06 23:52:49,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:52:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 538 transitions. [2021-11-06 23:52:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-06 23:52:49,776 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:52:49,776 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:52:49,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-06 23:52:49,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:52:49,987 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:52:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:52:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1145284768, now seen corresponding path program 3 times [2021-11-06 23:52:49,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:52:49,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459819498] [2021-11-06 23:52:49,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-06 23:52:49,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:52:49,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:52:49,989 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:52:49,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-06 23:52:50,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-06 23:52:50,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:52:50,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 23:52:50,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:52:51,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-06 23:52:51,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:52:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-06 23:52:51,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:52:51,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459819498] [2021-11-06 23:52:51,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459819498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-06 23:52:51,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-06 23:52:51,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-06 23:52:51,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374175862] [2021-11-06 23:52:51,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 23:52:51,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:52:51,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 23:52:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 23:52:51,768 INFO L87 Difference]: Start difference. First operand 473 states and 538 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:52:54,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:52:54,982 INFO L93 Difference]: Finished difference Result 983 states and 1122 transitions. [2021-11-06 23:52:54,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 23:52:54,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-06 23:52:54,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:52:54,985 INFO L225 Difference]: With dead ends: 983 [2021-11-06 23:52:54,985 INFO L226 Difference]: Without dead ends: 555 [2021-11-06 23:52:54,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 23:52:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2021-11-06 23:52:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 548. [2021-11-06 23:52:55,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 546 states have (on average 1.1446886446886446) internal successors, (625), 547 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:52:55,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 625 transitions. [2021-11-06 23:52:55,007 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 625 transitions. Word has length 211 [2021-11-06 23:52:55,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:52:55,007 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 625 transitions. [2021-11-06 23:52:55,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:52:55,007 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 625 transitions. [2021-11-06 23:52:55,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-06 23:52:55,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:52:55,009 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:52:55,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-06 23:52:55,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:52:55,221 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:52:55,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:52:55,222 INFO L85 PathProgramCache]: Analyzing trace with hash 670931834, now seen corresponding path program 1 times [2021-11-06 23:52:55,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:52:55,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632268377] [2021-11-06 23:52:55,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 23:52:55,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:52:55,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:52:55,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:52:55,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-06 23:52:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 23:52:56,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-06 23:52:56,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:52:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:52:59,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:53:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:53:10,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:53:10,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632268377] [2021-11-06 23:53:10,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632268377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:53:10,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:53:10,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-06 23:53:10,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860652679] [2021-11-06 23:53:10,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-06 23:53:10,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:53:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-06 23:53:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-06 23:53:10,733 INFO L87 Difference]: Start difference. First operand 548 states and 625 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:56:38,707 WARN L860 $PredicateComparison]: unable to prove that (and (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv37 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv7 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv46 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv35 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv40 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv29 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv43 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv31 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv42 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv5 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv54 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv16 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv41 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv45 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv14 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv6 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv3 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv23 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv53 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv36 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv30 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv47 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv15 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv8 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv50 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv4 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv39 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv63 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv12 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv17 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv62 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv52 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv38 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv11 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv57 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv25 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv55 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv2 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv61 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv18 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv19 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv34 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv10 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv51 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv24 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv58 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv48 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv28 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv49 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv33 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv20 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv1 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv56 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv44 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv13 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv32 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv21 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv60 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv26 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv27 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233| (_ bv9 32)) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv22 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|) (bvult (bvadd (_ bv59 32) |c_ULTIMATE.start_#Ultimate.C_memset_#t~loopctr233|) |c_ULTIMATE.start_#Ultimate.C_memset_#amount|)) is different from true [2021-11-06 23:58:30,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 23:58:30,215 INFO L93 Difference]: Finished difference Result 1003 states and 1217 transitions. [2021-11-06 23:58:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-06 23:58:30,217 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-06 23:58:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 23:58:30,219 INFO L225 Difference]: With dead ends: 1003 [2021-11-06 23:58:30,219 INFO L226 Difference]: Without dead ends: 614 [2021-11-06 23:58:30,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1933 ImplicationChecksByTransitivity, 214.4s TimeCoverageRelationStatistics Valid=12742, Invalid=25091, Unknown=1, NotChecked=386, Total=38220 [2021-11-06 23:58:30,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-11-06 23:58:30,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2021-11-06 23:58:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 612 states have (on average 1.1290849673202614) internal successors, (691), 613 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:58:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 691 transitions. [2021-11-06 23:58:30,278 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 691 transitions. Word has length 218 [2021-11-06 23:58:30,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 23:58:30,279 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 691 transitions. [2021-11-06 23:58:30,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 23:58:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 691 transitions. [2021-11-06 23:58:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-06 23:58:30,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 23:58:30,285 INFO L513 BasicCegarLoop]: trace histogram [130, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 23:58:30,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-06 23:58:30,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-06 23:58:30,499 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-06 23:58:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 23:58:30,500 INFO L85 PathProgramCache]: Analyzing trace with hash 249759226, now seen corresponding path program 2 times [2021-11-06 23:58:30,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-06 23:58:30,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407124271] [2021-11-06 23:58:30,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-06 23:58:30,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-06 23:58:30,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-06 23:58:30,502 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-06 23:58:30,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-06 23:58:32,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-06 23:58:32,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-06 23:58:32,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 133 conjunts are in the unsatisfiable core [2021-11-06 23:58:32,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 23:58:43,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:58:43,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-06 23:59:31,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9507 backedges. 2 proven. 8515 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-06 23:59:31,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-06 23:59:31,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407124271] [2021-11-06 23:59:31,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407124271] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-06 23:59:31,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 23:59:31,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133] total 264 [2021-11-06 23:59:31,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541282559] [2021-11-06 23:59:31,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2021-11-06 23:59:31,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-06 23:59:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2021-11-06 23:59:31,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17686, Invalid=51746, Unknown=0, NotChecked=0, Total=69432 [2021-11-06 23:59:31,472 INFO L87 Difference]: Start difference. First operand 614 states and 691 transitions. Second operand has 264 states, 264 states have (on average 1.4128787878787878) internal successors, (373), 264 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15