./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version c3fed411 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/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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 valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 05:43:00,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 05:43:00,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 05:43:00,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 05:43:00,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 05:43:00,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 05:43:00,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 05:43:00,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 05:43:00,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 05:43:00,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 05:43:00,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 05:43:00,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 05:43:00,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 05:43:00,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 05:43:00,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 05:43:00,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 05:43:00,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 05:43:00,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 05:43:00,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 05:43:00,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 05:43:00,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 05:43:00,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 05:43:00,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 05:43:00,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 05:43:00,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 05:43:00,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 05:43:00,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 05:43:00,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 05:43:00,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 05:43:00,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 05:43:00,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 05:43:00,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 05:43:00,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 05:43:00,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 05:43:00,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 05:43:00,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 05:43:00,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 05:43:00,279 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 05:43:00,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 05:43:00,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 05:43:00,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 05:43:00,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-12-16 05:43:00,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 05:43:00,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 05:43:00,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 05:43:00,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 05:43:00,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 05:43:00,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 05:43:00,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 05:43:00,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 05:43:00,307 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 05:43:00,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 05:43:00,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 05:43:00,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 05:43:00,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 05:43:00,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 05:43:00,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 05:43:00,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 05:43:00,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 05:43:00,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:43:00,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 05:43:00,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 05:43:00,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 05:43:00,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 05:43:00,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 05:43:00,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 503a3e49b44041609ec1bba765b53912c88abb90ff278e61e68e863904faf4bb [2021-12-16 05:43:00,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 05:43:00,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 05:43:00,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 05:43:00,519 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 05:43:00,533 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 05:43:00,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2021-12-16 05:43:00,611 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa554b3b/87061f273b844839aa4b7e513334395a/FLAGb8c25a5d0 [2021-12-16 05:43:00,981 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 05:43:00,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i [2021-12-16 05:43:01,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa554b3b/87061f273b844839aa4b7e513334395a/FLAGb8c25a5d0 [2021-12-16 05:43:01,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3aa554b3b/87061f273b844839aa4b7e513334395a [2021-12-16 05:43:01,367 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 05:43:01,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 05:43:01,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 05:43:01,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 05:43:01,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 05:43:01,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed8e75c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01, skipping insertion in model container [2021-12-16 05:43:01,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 05:43:01,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 05:43:01,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2021-12-16 05:43:01,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2021-12-16 05:43:01,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2021-12-16 05:43:01,655 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2021-12-16 05:43:01,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:43:01,666 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 05:43:01,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22534,22547] [2021-12-16 05:43:01,699 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22606,22619] [2021-12-16 05:43:01,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22746,22759] [2021-12-16 05:43:01,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-rb-sentinel-2.i[22820,22833] [2021-12-16 05:43:01,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 05:43:01,719 INFO L208 MainTranslator]: Completed translation [2021-12-16 05:43:01,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01 WrapperNode [2021-12-16 05:43:01,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 05:43:01,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 05:43:01,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 05:43:01,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 05:43:01,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,750 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 134 [2021-12-16 05:43:01,751 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 05:43:01,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 05:43:01,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 05:43:01,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 05:43:01,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 05:43:01,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 05:43:01,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 05:43:01,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 05:43:01,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (1/1) ... [2021-12-16 05:43:01,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 05:43:01,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:01,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 05:43:01,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 05:43:01,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 05:43:01,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 05:43:01,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 05:43:01,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 05:43:01,950 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 05:43:01,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 05:43:02,200 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 05:43:02,205 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 05:43:02,205 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-12-16 05:43:02,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:02 BoogieIcfgContainer [2021-12-16 05:43:02,207 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 05:43:02,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 05:43:02,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 05:43:02,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 05:43:02,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 05:43:01" (1/3) ... [2021-12-16 05:43:02,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c62b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:02, skipping insertion in model container [2021-12-16 05:43:02,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 05:43:01" (2/3) ... [2021-12-16 05:43:02,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c62b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 05:43:02, skipping insertion in model container [2021-12-16 05:43:02,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 05:43:02" (3/3) ... [2021-12-16 05:43:02,213 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2021-12-16 05:43:02,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 05:43:02,217 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2021-12-16 05:43:02,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 05:43:02,264 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 05:43:02,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2021-12-16 05:43:02,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 05:43:02,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:02,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 05:43:02,288 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:02,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:02,292 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-16 05:43:02,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:02,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928311333] [2021-12-16 05:43:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:02,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:02,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:02,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928311333] [2021-12-16 05:43:02,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928311333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:02,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:02,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:02,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227368190] [2021-12-16 05:43:02,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:02,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:02,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:02,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,444 INFO L87 Difference]: Start difference. First operand has 133 states, 71 states have (on average 2.1549295774647885) internal successors, (153), 132 states have internal predecessors, (153), 0 states have call successors, (0), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:02,589 INFO L93 Difference]: Finished difference Result 161 states and 168 transitions. [2021-12-16 05:43:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:02,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-16 05:43:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:02,598 INFO L225 Difference]: With dead ends: 161 [2021-12-16 05:43:02,599 INFO L226 Difference]: Without dead ends: 159 [2021-12-16 05:43:02,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,603 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 114 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:02,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 100 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-12-16 05:43:02,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 133. [2021-12-16 05:43:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 74 states have (on average 1.9054054054054055) internal successors, (141), 132 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 141 transitions. [2021-12-16 05:43:02,648 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 141 transitions. Word has length 3 [2021-12-16 05:43:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:02,648 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 141 transitions. [2021-12-16 05:43:02,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 141 transitions. [2021-12-16 05:43:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-16 05:43:02,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:02,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-16 05:43:02,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 05:43:02,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:02,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:02,652 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-16 05:43:02,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:02,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651656752] [2021-12-16 05:43:02,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:02,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:02,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651656752] [2021-12-16 05:43:02,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651656752] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:02,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:02,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:02,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570001067] [2021-12-16 05:43:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:02,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:02,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:02,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:02,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,727 INFO L87 Difference]: Start difference. First operand 133 states and 141 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:02,799 INFO L93 Difference]: Finished difference Result 130 states and 137 transitions. [2021-12-16 05:43:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2021-12-16 05:43:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:02,803 INFO L225 Difference]: With dead ends: 130 [2021-12-16 05:43:02,803 INFO L226 Difference]: Without dead ends: 130 [2021-12-16 05:43:02,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,804 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 126 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:02,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 73 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-16 05:43:02,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-16 05:43:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 74 states have (on average 1.8513513513513513) internal successors, (137), 129 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 137 transitions. [2021-12-16 05:43:02,815 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 137 transitions. Word has length 3 [2021-12-16 05:43:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:02,816 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 137 transitions. [2021-12-16 05:43:02,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,816 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 137 transitions. [2021-12-16 05:43:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 05:43:02,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:02,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 05:43:02,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 05:43:02,817 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash 889446152, now seen corresponding path program 1 times [2021-12-16 05:43:02,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803905606] [2021-12-16 05:43:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:02,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:02,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:02,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803905606] [2021-12-16 05:43:02,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803905606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:02,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:02,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:02,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404977055] [2021-12-16 05:43:02,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:02,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:02,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:02,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,848 INFO L87 Difference]: Start difference. First operand 130 states and 137 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:02,907 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2021-12-16 05:43:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:02,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-16 05:43:02,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:02,908 INFO L225 Difference]: With dead ends: 127 [2021-12-16 05:43:02,908 INFO L226 Difference]: Without dead ends: 127 [2021-12-16 05:43:02,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,909 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 102 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:02,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 82 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:02,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-16 05:43:02,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2021-12-16 05:43:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 75 states have (on average 1.7733333333333334) internal successors, (133), 124 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 133 transitions. [2021-12-16 05:43:02,914 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 133 transitions. Word has length 6 [2021-12-16 05:43:02,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:02,914 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 133 transitions. [2021-12-16 05:43:02,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:02,915 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 133 transitions. [2021-12-16 05:43:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 05:43:02,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:02,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 05:43:02,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 05:43:02,915 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:02,916 INFO L85 PathProgramCache]: Analyzing trace with hash 889446153, now seen corresponding path program 1 times [2021-12-16 05:43:02,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:02,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202590879] [2021-12-16 05:43:02,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:02,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:02,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:02,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202590879] [2021-12-16 05:43:02,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202590879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:02,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:02,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:02,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135878959] [2021-12-16 05:43:02,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:02,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:02,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:02,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:02,949 INFO L87 Difference]: Start difference. First operand 125 states and 133 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:03,018 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2021-12-16 05:43:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:03,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-12-16 05:43:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:03,019 INFO L225 Difference]: With dead ends: 143 [2021-12-16 05:43:03,019 INFO L226 Difference]: Without dead ends: 143 [2021-12-16 05:43:03,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:03,020 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 101 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:03,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 91 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-16 05:43:03,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 130. [2021-12-16 05:43:03,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 82 states have (on average 1.6829268292682926) internal successors, (138), 129 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-12-16 05:43:03,025 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 6 [2021-12-16 05:43:03,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:03,025 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-12-16 05:43:03,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,025 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-12-16 05:43:03,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 05:43:03,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:03,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:03,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 05:43:03,026 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:03,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 171980525, now seen corresponding path program 1 times [2021-12-16 05:43:03,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:03,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119589557] [2021-12-16 05:43:03,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:03,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:03,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119589557] [2021-12-16 05:43:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119589557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:03,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:03,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 05:43:03,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292749155] [2021-12-16 05:43:03,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:03,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:43:03,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:43:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 05:43:03,111 INFO L87 Difference]: Start difference. First operand 130 states and 138 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:03,210 INFO L93 Difference]: Finished difference Result 134 states and 144 transitions. [2021-12-16 05:43:03,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:43:03,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 05:43:03,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:03,211 INFO L225 Difference]: With dead ends: 134 [2021-12-16 05:43:03,211 INFO L226 Difference]: Without dead ends: 134 [2021-12-16 05:43:03,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:43:03,212 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 161 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:03,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 74 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:03,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-16 05:43:03,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 121. [2021-12-16 05:43:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 84 states have (on average 1.5595238095238095) internal successors, (131), 120 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 131 transitions. [2021-12-16 05:43:03,216 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 131 transitions. Word has length 11 [2021-12-16 05:43:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:03,217 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 131 transitions. [2021-12-16 05:43:03,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,217 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 131 transitions. [2021-12-16 05:43:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 05:43:03,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:03,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:03,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 05:43:03,218 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:03,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:03,218 INFO L85 PathProgramCache]: Analyzing trace with hash 171980526, now seen corresponding path program 1 times [2021-12-16 05:43:03,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:03,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478096573] [2021-12-16 05:43:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:03,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:03,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:03,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478096573] [2021-12-16 05:43:03,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478096573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:03,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:03,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 05:43:03,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413527604] [2021-12-16 05:43:03,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:03,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 05:43:03,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 05:43:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:43:03,301 INFO L87 Difference]: Start difference. First operand 121 states and 131 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:03,474 INFO L93 Difference]: Finished difference Result 154 states and 164 transitions. [2021-12-16 05:43:03,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 05:43:03,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 05:43:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:03,475 INFO L225 Difference]: With dead ends: 154 [2021-12-16 05:43:03,476 INFO L226 Difference]: Without dead ends: 154 [2021-12-16 05:43:03,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:43:03,477 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 183 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:03,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 124 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:03,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-12-16 05:43:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 128. [2021-12-16 05:43:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 92 states have (on average 1.5108695652173914) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-12-16 05:43:03,481 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 11 [2021-12-16 05:43:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:03,481 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-12-16 05:43:03,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-12-16 05:43:03,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 05:43:03,482 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:03,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:03,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 05:43:03,482 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:03,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:03,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2064509497, now seen corresponding path program 1 times [2021-12-16 05:43:03,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:03,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201809495] [2021-12-16 05:43:03,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:03,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:03,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:03,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201809495] [2021-12-16 05:43:03,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201809495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:03,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:03,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:03,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499846068] [2021-12-16 05:43:03,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:03,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:43:03,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:03,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:43:03,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:43:03,517 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-12-16 05:43:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:03,636 INFO L93 Difference]: Finished difference Result 167 states and 177 transitions. [2021-12-16 05:43:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:43:03,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 13 [2021-12-16 05:43:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:03,638 INFO L225 Difference]: With dead ends: 167 [2021-12-16 05:43:03,638 INFO L226 Difference]: Without dead ends: 167 [2021-12-16 05:43:03,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 05:43:03,639 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 230 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:03,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 129 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-16 05:43:03,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2021-12-16 05:43:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 94 states have (on average 1.4893617021276595) internal successors, (140), 128 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-12-16 05:43:03,643 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 13 [2021-12-16 05:43:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:03,643 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-12-16 05:43:03,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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) [2021-12-16 05:43:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-12-16 05:43:03,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 05:43:03,644 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:03,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:03,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 05:43:03,644 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:03,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:03,645 INFO L85 PathProgramCache]: Analyzing trace with hash -264176465, now seen corresponding path program 1 times [2021-12-16 05:43:03,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:03,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145027225] [2021-12-16 05:43:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:03,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:03,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:03,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145027225] [2021-12-16 05:43:03,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145027225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:03,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:03,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:03,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137944785] [2021-12-16 05:43:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:03,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:43:03,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:43:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:03,689 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:03,830 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2021-12-16 05:43:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:43:03,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-12-16 05:43:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:03,831 INFO L225 Difference]: With dead ends: 129 [2021-12-16 05:43:03,831 INFO L226 Difference]: Without dead ends: 129 [2021-12-16 05:43:03,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:43:03,832 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 47 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:03,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 264 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:03,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-16 05:43:03,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2021-12-16 05:43:03,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.4787234042553192) internal successors, (139), 127 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2021-12-16 05:43:03,834 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 15 [2021-12-16 05:43:03,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:03,834 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2021-12-16 05:43:03,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2021-12-16 05:43:03,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 05:43:03,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:03,835 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:03,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 05:43:03,835 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:03,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:03,835 INFO L85 PathProgramCache]: Analyzing trace with hash -264176464, now seen corresponding path program 1 times [2021-12-16 05:43:03,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:03,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288642387] [2021-12-16 05:43:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:03,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:03,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:03,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288642387] [2021-12-16 05:43:03,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288642387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:03,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:03,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:03,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461674248] [2021-12-16 05:43:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:03,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:43:03,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:43:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:03,888 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:04,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:04,048 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-12-16 05:43:04,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 05:43:04,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2021-12-16 05:43:04,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:04,049 INFO L225 Difference]: With dead ends: 130 [2021-12-16 05:43:04,049 INFO L226 Difference]: Without dead ends: 130 [2021-12-16 05:43:04,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:43:04,049 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 18 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:04,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 307 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:04,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-16 05:43:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 123. [2021-12-16 05:43:04,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 94 states have (on average 1.425531914893617) internal successors, (134), 122 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) [2021-12-16 05:43:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-12-16 05:43:04,052 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 15 [2021-12-16 05:43:04,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:04,052 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-12-16 05:43:04,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-12-16 05:43:04,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 05:43:04,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:04,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:04,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 05:43:04,053 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:04,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:04,053 INFO L85 PathProgramCache]: Analyzing trace with hash -125261441, now seen corresponding path program 1 times [2021-12-16 05:43:04,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707457863] [2021-12-16 05:43:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:04,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:04,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707457863] [2021-12-16 05:43:04,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707457863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:04,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:04,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 05:43:04,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006449643] [2021-12-16 05:43:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:04,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 05:43:04,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 05:43:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:43:04,153 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:04,307 INFO L93 Difference]: Finished difference Result 184 states and 200 transitions. [2021-12-16 05:43:04,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 05:43:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 05:43:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:04,308 INFO L225 Difference]: With dead ends: 184 [2021-12-16 05:43:04,308 INFO L226 Difference]: Without dead ends: 184 [2021-12-16 05:43:04,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-16 05:43:04,309 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 390 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:04,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 228 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:04,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-12-16 05:43:04,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 130. [2021-12-16 05:43:04,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 129 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:04,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-12-16 05:43:04,312 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 16 [2021-12-16 05:43:04,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:04,312 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-12-16 05:43:04,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-12-16 05:43:04,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 05:43:04,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:04,313 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:04,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 05:43:04,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:04,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash -926362969, now seen corresponding path program 1 times [2021-12-16 05:43:04,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:04,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371160384] [2021-12-16 05:43:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:04,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:04,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:04,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:04,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371160384] [2021-12-16 05:43:04,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371160384] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:04,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471670566] [2021-12-16 05:43:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:04,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:04,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:04,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:43:04,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 05:43:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:04,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-16 05:43:04,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:04,585 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 [2021-12-16 05:43:04,591 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 [2021-12-16 05:43:04,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:43:04,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:43:04,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:43:04,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:43:04,763 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 [2021-12-16 05:43:04,768 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 [2021-12-16 05:43:04,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:04,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:04,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:04,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471670566] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:04,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:04,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 12 [2021-12-16 05:43:04,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029185536] [2021-12-16 05:43:04,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:04,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 05:43:04,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:04,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 05:43:04,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-16 05:43:04,912 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:05,161 INFO L93 Difference]: Finished difference Result 181 states and 197 transitions. [2021-12-16 05:43:05,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 05:43:05,162 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-12-16 05:43:05,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:05,162 INFO L225 Difference]: With dead ends: 181 [2021-12-16 05:43:05,162 INFO L226 Difference]: Without dead ends: 181 [2021-12-16 05:43:05,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-12-16 05:43:05,163 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 313 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:05,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [313 Valid, 260 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 05:43:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-16 05:43:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 137. [2021-12-16 05:43:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 108 states have (on average 1.3888888888888888) internal successors, (150), 136 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2021-12-16 05:43:05,166 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 23 [2021-12-16 05:43:05,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:05,166 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2021-12-16 05:43:05,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,166 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2021-12-16 05:43:05,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 05:43:05,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:05,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:05,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 05:43:05,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-16 05:43:05,384 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:05,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:05,385 INFO L85 PathProgramCache]: Analyzing trace with hash -968381222, now seen corresponding path program 1 times [2021-12-16 05:43:05,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:05,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385155731] [2021-12-16 05:43:05,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:05,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:05,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:05,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:05,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385155731] [2021-12-16 05:43:05,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385155731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:05,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:05,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:05,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733557524] [2021-12-16 05:43:05,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:05,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 05:43:05,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:05,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 05:43:05,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 05:43:05,470 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:05,564 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2021-12-16 05:43:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 05:43:05,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2021-12-16 05:43:05,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:05,565 INFO L225 Difference]: With dead ends: 141 [2021-12-16 05:43:05,565 INFO L226 Difference]: Without dead ends: 141 [2021-12-16 05:43:05,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:05,566 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 9 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:05,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 296 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:05,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-16 05:43:05,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 136. [2021-12-16 05:43:05,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 135 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 147 transitions. [2021-12-16 05:43:05,568 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 147 transitions. Word has length 23 [2021-12-16 05:43:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:05,568 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 147 transitions. [2021-12-16 05:43:05,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,569 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 147 transitions. [2021-12-16 05:43:05,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 05:43:05,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:05,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:05,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 05:43:05,570 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:05,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:05,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136957, now seen corresponding path program 1 times [2021-12-16 05:43:05,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:05,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89230915] [2021-12-16 05:43:05,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:05,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:05,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:05,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89230915] [2021-12-16 05:43:05,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89230915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:05,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:05,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:05,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651846573] [2021-12-16 05:43:05,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:05,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:43:05,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:43:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:05,606 INFO L87 Difference]: Start difference. First operand 136 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:05,726 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2021-12-16 05:43:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:43:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-16 05:43:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:05,727 INFO L225 Difference]: With dead ends: 136 [2021-12-16 05:43:05,727 INFO L226 Difference]: Without dead ends: 136 [2021-12-16 05:43:05,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:43:05,728 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 41 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:05,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 261 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:05,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-16 05:43:05,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2021-12-16 05:43:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 107 states have (on average 1.3644859813084111) internal successors, (146), 134 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2021-12-16 05:43:05,731 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 24 [2021-12-16 05:43:05,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:05,731 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2021-12-16 05:43:05,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2021-12-16 05:43:05,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-16 05:43:05,732 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:05,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:05,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 05:43:05,732 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:05,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1747136958, now seen corresponding path program 1 times [2021-12-16 05:43:05,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:05,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85992959] [2021-12-16 05:43:05,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:05,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:05,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:05,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85992959] [2021-12-16 05:43:05,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85992959] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:05,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:05,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 05:43:05,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558066560] [2021-12-16 05:43:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:05,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 05:43:05,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:05,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 05:43:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 05:43:05,782 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:05,893 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-12-16 05:43:05,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 05:43:05,894 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-16 05:43:05,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:05,894 INFO L225 Difference]: With dead ends: 133 [2021-12-16 05:43:05,894 INFO L226 Difference]: Without dead ends: 133 [2021-12-16 05:43:05,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 05:43:05,895 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 9 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:05,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 315 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:05,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-16 05:43:05,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 126. [2021-12-16 05:43:05,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.3333333333333333) internal successors, (136), 125 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2021-12-16 05:43:05,898 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 24 [2021-12-16 05:43:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:05,898 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2021-12-16 05:43:05,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:05,898 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2021-12-16 05:43:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-16 05:43:05,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:05,899 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:05,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 05:43:05,899 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:05,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:05,899 INFO L85 PathProgramCache]: Analyzing trace with hash 59031534, now seen corresponding path program 1 times [2021-12-16 05:43:05,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:05,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507503468] [2021-12-16 05:43:05,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:05,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:06,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507503468] [2021-12-16 05:43:06,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507503468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:06,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780978529] [2021-12-16 05:43:06,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:06,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:06,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:43:06,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 05:43:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:06,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-16 05:43:06,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:06,259 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 [2021-12-16 05:43:06,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:43:06,322 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:06,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:06,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:43:06,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:43:06,360 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 11 treesize of output 7 [2021-12-16 05:43:06,389 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 16 treesize of output 8 [2021-12-16 05:43:06,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:06,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:06,471 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 19 treesize of output 7 [2021-12-16 05:43:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:06,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:06,497 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:06,536 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:06,541 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_533 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:06,548 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 Int) (v_ArrVal_533 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_528)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:06,611 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_528 Int) (|v_ULTIMATE.start_main_~end~0#1.offset_56| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_6| Int) (v_ArrVal_533 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_6|))) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_56|) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_56| v_ArrVal_528)) |v_ULTIMATE.start_main_#t~malloc4#1.base_6| v_ArrVal_533) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK))) is different from false [2021-12-16 05:43:06,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:06,624 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:06,624 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2021-12-16 05:43:06,628 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 36 treesize of output 24 [2021-12-16 05:43:06,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 05:43:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:06,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780978529] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:06,648 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:06,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 31 [2021-12-16 05:43:06,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695926684] [2021-12-16 05:43:06,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:06,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-16 05:43:06,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-16 05:43:06,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=541, Unknown=5, NotChecked=260, Total=930 [2021-12-16 05:43:06,650 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:07,290 INFO L93 Difference]: Finished difference Result 305 states and 329 transitions. [2021-12-16 05:43:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 05:43:07,290 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-16 05:43:07,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:07,291 INFO L225 Difference]: With dead ends: 305 [2021-12-16 05:43:07,291 INFO L226 Difference]: Without dead ends: 305 [2021-12-16 05:43:07,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=260, Invalid=945, Unknown=5, NotChecked=350, Total=1560 [2021-12-16 05:43:07,292 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 397 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 1867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 989 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:07,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 800 Invalid, 1867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 814 Invalid, 0 Unknown, 989 Unchecked, 0.4s Time] [2021-12-16 05:43:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-16 05:43:07,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 141. [2021-12-16 05:43:07,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 117 states have (on average 1.3076923076923077) internal successors, (153), 140 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 153 transitions. [2021-12-16 05:43:07,295 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 153 transitions. Word has length 26 [2021-12-16 05:43:07,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:07,295 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 153 transitions. [2021-12-16 05:43:07,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.032258064516129) internal successors, (63), 31 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 153 transitions. [2021-12-16 05:43:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 05:43:07,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:07,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:07,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:07,507 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,SelfDestructingSolverStorable14 [2021-12-16 05:43:07,507 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:07,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash 500584872, now seen corresponding path program 1 times [2021-12-16 05:43:07,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:07,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320255749] [2021-12-16 05:43:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:07,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:07,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:07,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:07,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320255749] [2021-12-16 05:43:07,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320255749] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:07,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:07,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:07,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534498757] [2021-12-16 05:43:07,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:07,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:07,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:07,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:07,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:07,532 INFO L87 Difference]: Start difference. First operand 141 states and 153 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:07,555 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2021-12-16 05:43:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:07,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-16 05:43:07,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:07,556 INFO L225 Difference]: With dead ends: 142 [2021-12-16 05:43:07,556 INFO L226 Difference]: Without dead ends: 142 [2021-12-16 05:43:07,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:07,557 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:07,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 101 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:43:07,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-12-16 05:43:07,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-12-16 05:43:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 141 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2021-12-16 05:43:07,559 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 29 [2021-12-16 05:43:07,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:07,560 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2021-12-16 05:43:07,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,560 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2021-12-16 05:43:07,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 05:43:07,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:07,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:07,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 05:43:07,561 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:07,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1324652277, now seen corresponding path program 1 times [2021-12-16 05:43:07,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:07,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747597406] [2021-12-16 05:43:07,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:07,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:07,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:07,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747597406] [2021-12-16 05:43:07,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747597406] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:07,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418181140] [2021-12-16 05:43:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:07,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:07,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:43:07,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 05:43:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:07,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 05:43:07,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:07,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:43:07,734 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 19 treesize of output 7 [2021-12-16 05:43:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:07,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 05:43:07,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418181140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:07,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 05:43:07,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-16 05:43:07,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609926175] [2021-12-16 05:43:07,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:07,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 05:43:07,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 05:43:07,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 05:43:07,749 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:07,813 INFO L93 Difference]: Finished difference Result 150 states and 161 transitions. [2021-12-16 05:43:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 05:43:07,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-12-16 05:43:07,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:07,816 INFO L225 Difference]: With dead ends: 150 [2021-12-16 05:43:07,817 INFO L226 Difference]: Without dead ends: 150 [2021-12-16 05:43:07,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-16 05:43:07,817 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 6 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:07,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 229 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 05:43:07,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-12-16 05:43:07,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2021-12-16 05:43:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 121 states have (on average 1.2892561983471074) internal successors, (156), 144 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 156 transitions. [2021-12-16 05:43:07,820 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 156 transitions. Word has length 31 [2021-12-16 05:43:07,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:07,820 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 156 transitions. [2021-12-16 05:43:07,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:07,820 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 156 transitions. [2021-12-16 05:43:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 05:43:07,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:07,821 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:07,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:08,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:08,037 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:08,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:08,037 INFO L85 PathProgramCache]: Analyzing trace with hash 797716084, now seen corresponding path program 1 times [2021-12-16 05:43:08,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:08,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556435185] [2021-12-16 05:43:08,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:08,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:08,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:08,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556435185] [2021-12-16 05:43:08,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556435185] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:08,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815171637] [2021-12-16 05:43:08,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:08,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:08,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:08,146 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) [2021-12-16 05:43:08,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 05:43:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:08,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-16 05:43:08,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:08,267 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 [2021-12-16 05:43:08,271 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 [2021-12-16 05:43:08,298 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-16 05:43:08,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:43:08,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:43:08,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:43:08,453 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 [2021-12-16 05:43:08,458 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 [2021-12-16 05:43:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:08,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:08,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815171637] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:08,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:08,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 14 [2021-12-16 05:43:08,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617850299] [2021-12-16 05:43:08,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:08,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 05:43:08,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 05:43:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-16 05:43:08,718 INFO L87 Difference]: Start difference. First operand 145 states and 156 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:09,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:09,119 INFO L93 Difference]: Finished difference Result 199 states and 213 transitions. [2021-12-16 05:43:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 05:43:09,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-12-16 05:43:09,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:09,120 INFO L225 Difference]: With dead ends: 199 [2021-12-16 05:43:09,120 INFO L226 Difference]: Without dead ends: 199 [2021-12-16 05:43:09,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2021-12-16 05:43:09,120 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 292 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:09,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 361 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 05:43:09,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2021-12-16 05:43:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 156. [2021-12-16 05:43:09,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 132 states have (on average 1.2803030303030303) internal successors, (169), 155 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:09,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 169 transitions. [2021-12-16 05:43:09,123 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 169 transitions. Word has length 32 [2021-12-16 05:43:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:09,123 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 169 transitions. [2021-12-16 05:43:09,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 169 transitions. [2021-12-16 05:43:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 05:43:09,124 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:09,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:09,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:09,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-16 05:43:09,324 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:09,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1040605566, now seen corresponding path program 1 times [2021-12-16 05:43:09,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:09,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170026878] [2021-12-16 05:43:09,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:09,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-16 05:43:09,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:09,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170026878] [2021-12-16 05:43:09,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170026878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 05:43:09,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 05:43:09,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 05:43:09,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126033182] [2021-12-16 05:43:09,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 05:43:09,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 05:43:09,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:09,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 05:43:09,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:09,358 INFO L87 Difference]: Start difference. First operand 156 states and 169 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:09,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:09,376 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2021-12-16 05:43:09,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 05:43:09,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2021-12-16 05:43:09,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:09,377 INFO L225 Difference]: With dead ends: 155 [2021-12-16 05:43:09,378 INFO L226 Difference]: Without dead ends: 155 [2021-12-16 05:43:09,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 05:43:09,378 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:09,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 05:43:09,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-16 05:43:09,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-16 05:43:09,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 132 states have (on average 1.2651515151515151) internal successors, (167), 154 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:09,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 167 transitions. [2021-12-16 05:43:09,381 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 167 transitions. Word has length 33 [2021-12-16 05:43:09,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:09,381 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 167 transitions. [2021-12-16 05:43:09,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:09,381 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 167 transitions. [2021-12-16 05:43:09,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 05:43:09,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:09,382 INFO L514 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] [2021-12-16 05:43:09,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 05:43:09,382 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:09,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:09,382 INFO L85 PathProgramCache]: Analyzing trace with hash 248148312, now seen corresponding path program 1 times [2021-12-16 05:43:09,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:09,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018337964] [2021-12-16 05:43:09,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:09,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:09,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:09,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:09,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018337964] [2021-12-16 05:43:09,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018337964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:09,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212462973] [2021-12-16 05:43:09,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:09,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:09,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:09,504 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) [2021-12-16 05:43:09,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 05:43:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:09,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-16 05:43:09,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:09,598 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 [2021-12-16 05:43:09,662 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-16 05:43:09,663 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 [2021-12-16 05:43:09,701 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 11 treesize of output 7 [2021-12-16 05:43:09,812 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 05:43:09,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-16 05:43:09,848 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 05:43:09,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2021-12-16 05:43:09,962 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 25 treesize of output 13 [2021-12-16 05:43:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:10,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:10,101 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_818 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_818) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) 1)) is different from false [2021-12-16 05:43:10,108 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:10,108 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-16 05:43:10,113 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:10,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-16 05:43:10,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-16 05:43:12,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:12,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212462973] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:12,438 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:12,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2021-12-16 05:43:12,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273377972] [2021-12-16 05:43:12,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:12,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-16 05:43:12,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:12,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-16 05:43:12,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=630, Unknown=8, NotChecked=52, Total=812 [2021-12-16 05:43:12,439 INFO L87 Difference]: Start difference. First operand 155 states and 167 transitions. Second operand has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 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) [2021-12-16 05:43:12,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:12,956 INFO L93 Difference]: Finished difference Result 225 states and 242 transitions. [2021-12-16 05:43:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 05:43:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 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 33 [2021-12-16 05:43:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:12,957 INFO L225 Difference]: With dead ends: 225 [2021-12-16 05:43:12,957 INFO L226 Difference]: Without dead ends: 225 [2021-12-16 05:43:12,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=217, Invalid=900, Unknown=9, NotChecked=64, Total=1190 [2021-12-16 05:43:12,958 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 426 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 626 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:12,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 582 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 836 Invalid, 0 Unknown, 626 Unchecked, 0.4s Time] [2021-12-16 05:43:12,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-16 05:43:12,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 163. [2021-12-16 05:43:12,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 140 states have (on average 1.2642857142857142) internal successors, (177), 162 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:12,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2021-12-16 05:43:12,962 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 33 [2021-12-16 05:43:12,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:12,962 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2021-12-16 05:43:12,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7142857142857144) internal successors, (76), 29 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) [2021-12-16 05:43:12,962 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2021-12-16 05:43:12,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 05:43:12,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:12,963 INFO L514 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] [2021-12-16 05:43:12,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:13,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:13,171 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:13,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:13,172 INFO L85 PathProgramCache]: Analyzing trace with hash 248148313, now seen corresponding path program 1 times [2021-12-16 05:43:13,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:13,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942969728] [2021-12-16 05:43:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:13,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:13,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:13,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942969728] [2021-12-16 05:43:13,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942969728] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:13,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317688309] [2021-12-16 05:43:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:13,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:13,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:13,354 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) [2021-12-16 05:43:13,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 05:43:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:13,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-16 05:43:13,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:13,455 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 [2021-12-16 05:43:13,524 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:13,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:13,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-16 05:43:13,564 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 [2021-12-16 05:43:13,571 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 11 treesize of output 7 [2021-12-16 05:43:13,673 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 05:43:13,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-16 05:43:13,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-16 05:43:13,692 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 05:43:13,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-12-16 05:43:13,744 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 05:43:13,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2021-12-16 05:43:13,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2021-12-16 05:43:13,879 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 25 treesize of output 13 [2021-12-16 05:43:13,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-16 05:43:13,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:13,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:14,054 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_923 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4))) (forall ((v_ArrVal_924 (Array Int Int)) (v_ArrVal_923 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_924) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-12-16 05:43:14,087 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_924 (Array Int Int)) (v_ArrVal_923 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_924) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_923 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)))) is different from false [2021-12-16 05:43:14,094 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_924 (Array Int Int)) (v_ArrVal_923 (Array Int Int))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_924) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (forall ((v_ArrVal_923 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_923) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) 4)))) is different from false [2021-12-16 05:43:14,105 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:14,106 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2021-12-16 05:43:14,111 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:14,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2021-12-16 05:43:14,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-16 05:43:14,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:14,135 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2021-12-16 05:43:14,140 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:14,140 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2021-12-16 05:43:14,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:14,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-12-16 05:43:14,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:14,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-16 05:43:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:14,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317688309] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:14,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:14,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2021-12-16 05:43:14,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565538125] [2021-12-16 05:43:14,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:14,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 05:43:14,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:14,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 05:43:14,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=720, Unknown=3, NotChecked=168, Total=992 [2021-12-16 05:43:14,251 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:15,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:15,389 INFO L93 Difference]: Finished difference Result 232 states and 250 transitions. [2021-12-16 05:43:15,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 05:43:15,389 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 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 33 [2021-12-16 05:43:15,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:15,390 INFO L225 Difference]: With dead ends: 232 [2021-12-16 05:43:15,390 INFO L226 Difference]: Without dead ends: 232 [2021-12-16 05:43:15,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=317, Invalid=1672, Unknown=3, NotChecked=264, Total=2256 [2021-12-16 05:43:15,391 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 355 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 1559 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 2192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 569 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:15,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 903 Invalid, 2192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1559 Invalid, 0 Unknown, 569 Unchecked, 0.6s Time] [2021-12-16 05:43:15,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-16 05:43:15,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 166. [2021-12-16 05:43:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 143 states have (on average 1.2587412587412588) internal successors, (180), 165 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 180 transitions. [2021-12-16 05:43:15,394 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 180 transitions. Word has length 33 [2021-12-16 05:43:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:15,394 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 180 transitions. [2021-12-16 05:43:15,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.935483870967742) internal successors, (91), 32 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 180 transitions. [2021-12-16 05:43:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-16 05:43:15,394 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:15,394 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:15,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-16 05:43:15,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:15,604 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:15,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:15,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1639111831, now seen corresponding path program 1 times [2021-12-16 05:43:15,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:15,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049969178] [2021-12-16 05:43:15,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:15,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049969178] [2021-12-16 05:43:16,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049969178] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095522811] [2021-12-16 05:43:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:16,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:16,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:16,055 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) [2021-12-16 05:43:16,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 05:43:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:16,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-16 05:43:16,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:16,171 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 [2021-12-16 05:43:16,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:43:16,240 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:16,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:16,268 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 11 treesize of output 7 [2021-12-16 05:43:16,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:43:16,274 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 21 treesize of output 20 [2021-12-16 05:43:16,316 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 16 treesize of output 8 [2021-12-16 05:43:16,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:16,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:16,394 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:16,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:16,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-16 05:43:16,424 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 16 treesize of output 18 [2021-12-16 05:43:16,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-16 05:43:16,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:16,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:16,521 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 19 treesize of output 7 [2021-12-16 05:43:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:16,547 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1074 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:16,553 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1074 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem8#1.base| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:16,558 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1074 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:16,564 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1074 (Array Int Int)) (v_ArrVal_1072 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1072) |c_ULTIMATE.start_main_#t~malloc7#1.base| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:16,601 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (v_ArrVal_1074 (Array Int Int)) (v_ArrVal_1072 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1072) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK))) is different from false [2021-12-16 05:43:16,704 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-16 05:43:16,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-16 05:43:16,714 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1067 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (v_ArrVal_1074 (Array Int Int)) (v_ArrVal_1072 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~end~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1067)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1072) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK))) is different from false [2021-12-16 05:43:16,867 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_72| Int) (v_ArrVal_1067 Int) (|v_ULTIMATE.start_main_#t~malloc7#1.base_6| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_12| Int) (v_ArrVal_1074 (Array Int Int)) (v_ArrVal_1072 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_12|))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_ArrVal_1067)) |v_ULTIMATE.start_main_#t~malloc4#1.base_12| v_ArrVal_1072) |v_ULTIMATE.start_main_#t~malloc7#1.base_6| v_ArrVal_1074) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK) (= |c_ULTIMATE.start_main_~list~0#1.base| |v_ULTIMATE.start_main_#t~malloc7#1.base_6|) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_72|))) is different from false [2021-12-16 05:43:16,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:16,881 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:16,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2021-12-16 05:43:16,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:16,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-12-16 05:43:16,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 05:43:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:16,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095522811] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:16,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:16,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 43 [2021-12-16 05:43:16,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173945337] [2021-12-16 05:43:16,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:16,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-16 05:43:16,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:16,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-16 05:43:16,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1063, Unknown=17, NotChecked=518, Total=1806 [2021-12-16 05:43:16,930 INFO L87 Difference]: Start difference. First operand 166 states and 180 transitions. Second operand has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:17,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:17,892 INFO L93 Difference]: Finished difference Result 434 states and 470 transitions. [2021-12-16 05:43:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 05:43:17,893 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 states have internal predecessors, (82), 0 states have call successors, (0), 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 33 [2021-12-16 05:43:17,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:17,894 INFO L225 Difference]: With dead ends: 434 [2021-12-16 05:43:17,894 INFO L226 Difference]: Without dead ends: 434 [2021-12-16 05:43:17,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=428, Invalid=2033, Unknown=17, NotChecked=714, Total=3192 [2021-12-16 05:43:17,895 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 688 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2083 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:17,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1006 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1124 Invalid, 0 Unknown, 2083 Unchecked, 0.5s Time] [2021-12-16 05:43:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-12-16 05:43:17,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 181. [2021-12-16 05:43:17,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 158 states have (on average 1.240506329113924) internal successors, (196), 180 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:17,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 196 transitions. [2021-12-16 05:43:17,898 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 196 transitions. Word has length 33 [2021-12-16 05:43:17,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:17,898 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 196 transitions. [2021-12-16 05:43:17,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.9069767441860466) internal successors, (82), 43 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:17,899 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 196 transitions. [2021-12-16 05:43:17,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 05:43:17,899 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:17,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:17,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:18,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:18,107 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:18,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:18,108 INFO L85 PathProgramCache]: Analyzing trace with hash 705439333, now seen corresponding path program 1 times [2021-12-16 05:43:18,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:18,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250991203] [2021-12-16 05:43:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:18,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:18,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:18,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:18,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250991203] [2021-12-16 05:43:18,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250991203] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:18,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052172235] [2021-12-16 05:43:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:18,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:18,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:18,271 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) [2021-12-16 05:43:18,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 05:43:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:18,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 05:43:18,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:18,437 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-12-16 05:43:18,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2021-12-16 05:43:18,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-16 05:43:18,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-16 05:43:18,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:18,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-16 05:43:19,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052172235] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:19,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:19,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2021-12-16 05:43:19,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540834595] [2021-12-16 05:43:19,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:19,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 05:43:19,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 05:43:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-16 05:43:19,119 INFO L87 Difference]: Start difference. First operand 181 states and 196 transitions. Second operand has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:19,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:19,337 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2021-12-16 05:43:19,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 05:43:19,337 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-12-16 05:43:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:19,338 INFO L225 Difference]: With dead ends: 217 [2021-12-16 05:43:19,338 INFO L226 Difference]: Without dead ends: 182 [2021-12-16 05:43:19,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-12-16 05:43:19,339 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 157 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:19,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 523 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 311 Invalid, 0 Unknown, 296 Unchecked, 0.1s Time] [2021-12-16 05:43:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-16 05:43:19,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 157. [2021-12-16 05:43:19,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 156 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 169 transitions. [2021-12-16 05:43:19,345 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 169 transitions. Word has length 35 [2021-12-16 05:43:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:19,345 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 169 transitions. [2021-12-16 05:43:19,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.785714285714286) internal successors, (95), 15 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 169 transitions. [2021-12-16 05:43:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-16 05:43:19,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:19,346 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:19,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:19,562 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,SelfDestructingSolverStorable22 [2021-12-16 05:43:19,563 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1173956707, now seen corresponding path program 2 times [2021-12-16 05:43:19,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:19,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928870486] [2021-12-16 05:43:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:19,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:19,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928870486] [2021-12-16 05:43:19,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928870486] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966377114] [2021-12-16 05:43:19,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:43:19,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:19,939 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:43:19,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 05:43:20,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 05:43:20,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:43:20,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 46 conjunts are in the unsatisfiable core [2021-12-16 05:43:20,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:20,086 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 [2021-12-16 05:43:20,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-16 05:43:20,164 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:20,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:20,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 05:43:20,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-16 05:43:20,193 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 11 treesize of output 7 [2021-12-16 05:43:20,232 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 16 treesize of output 8 [2021-12-16 05:43:20,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:20,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:20,310 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:20,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:20,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-12-16 05:43:20,333 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 16 treesize of output 18 [2021-12-16 05:43:20,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2021-12-16 05:43:20,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:20,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-12-16 05:43:20,442 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 19 treesize of output 7 [2021-12-16 05:43:20,445 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:20,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:20,468 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1288 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:20,480 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1288 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_#t~mem5#1.base| v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:20,483 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1288 (Array Int Int))) (= (select (select (store |c_#memory_int| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:20,491 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1288 (Array Int Int)) (v_ArrVal_1285 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1285) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK)) is different from false [2021-12-16 05:43:20,534 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc4#1.base_15| Int) (v_ArrVal_1288 (Array Int Int)) (v_ArrVal_1285 (Array Int Int))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1285) |v_ULTIMATE.start_main_#t~malloc4#1.base_15| v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_15|))))) is different from false [2021-12-16 05:43:20,623 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-16 05:43:20,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2021-12-16 05:43:20,631 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_#t~malloc4#1.base_15| Int) (v_ArrVal_1288 (Array Int Int)) (v_ArrVal_1278 Int) (v_ArrVal_1285 (Array Int Int))) (or (= |v_ULTIMATE.start_main_#t~malloc4#1.base_15| |c_ULTIMATE.start_main_~end~0#1.base|) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1278)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1285) |v_ULTIMATE.start_main_#t~malloc4#1.base_15| v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK))) is different from false [2021-12-16 05:43:20,736 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_81| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_17| Int) (|v_ULTIMATE.start_main_#t~malloc4#1.base_15| Int) (v_ArrVal_1288 (Array Int Int)) (v_ArrVal_1278 Int) (v_ArrVal_1285 (Array Int Int))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc4#1.base_17|))) (= |v_ULTIMATE.start_main_#t~malloc4#1.base_15| |c_ULTIMATE.start_main_~list~0#1.base|) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_81|) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_81| v_ArrVal_1278)) |v_ULTIMATE.start_main_#t~malloc4#1.base_17| v_ArrVal_1285) |v_ULTIMATE.start_main_#t~malloc4#1.base_15| v_ArrVal_1288) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)) ~unnamed1~0~BLACK))) is different from false [2021-12-16 05:43:20,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:20,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-16 05:43:20,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 34 [2021-12-16 05:43:20,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:20,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-12-16 05:43:20,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-16 05:43:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-16 05:43:20,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966377114] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 05:43:20,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 05:43:20,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 44 [2021-12-16 05:43:20,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225530743] [2021-12-16 05:43:20,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 05:43:20,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-16 05:43:20,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 05:43:20,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-16 05:43:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1124, Unknown=17, NotChecked=532, Total=1892 [2021-12-16 05:43:20,809 INFO L87 Difference]: Start difference. First operand 157 states and 169 transitions. Second operand has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 05:43:21,529 INFO L93 Difference]: Finished difference Result 381 states and 410 transitions. [2021-12-16 05:43:21,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-16 05:43:21,530 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 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 36 [2021-12-16 05:43:21,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 05:43:21,531 INFO L225 Difference]: With dead ends: 381 [2021-12-16 05:43:21,531 INFO L226 Difference]: Without dead ends: 381 [2021-12-16 05:43:21,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=432, Invalid=2029, Unknown=17, NotChecked=714, Total=3192 [2021-12-16 05:43:21,532 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 620 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 2994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2120 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 05:43:21,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 859 Invalid, 2994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 751 Invalid, 0 Unknown, 2120 Unchecked, 0.4s Time] [2021-12-16 05:43:21,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-12-16 05:43:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 165. [2021-12-16 05:43:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 142 states have (on average 1.2535211267605635) internal successors, (178), 164 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 178 transitions. [2021-12-16 05:43:21,535 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 178 transitions. Word has length 36 [2021-12-16 05:43:21,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 05:43:21,535 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 178 transitions. [2021-12-16 05:43:21,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1136363636363638) internal successors, (93), 44 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 05:43:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 178 transitions. [2021-12-16 05:43:21,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 05:43:21,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 05:43:21,536 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 05:43:21,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 05:43:21,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-16 05:43:21,736 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 57 more)] === [2021-12-16 05:43:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 05:43:21,737 INFO L85 PathProgramCache]: Analyzing trace with hash 283994547, now seen corresponding path program 2 times [2021-12-16 05:43:21,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 05:43:21,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867746501] [2021-12-16 05:43:21,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 05:43:21,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 05:43:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 05:43:21,946 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:21,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 05:43:21,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867746501] [2021-12-16 05:43:21,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867746501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 05:43:21,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995132636] [2021-12-16 05:43:21,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 05:43:21,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 05:43:21,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 05:43:21,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 05:43:21,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 05:43:22,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 05:43:22,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 05:43:22,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-16 05:43:22,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 05:43:22,146 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 [2021-12-16 05:43:22,216 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 05:43:22,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-16 05:43:22,247 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 [2021-12-16 05:43:22,252 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 11 treesize of output 7 [2021-12-16 05:43:22,365 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-16 05:43:22,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 21 [2021-12-16 05:43:22,378 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-16 05:43:22,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2021-12-16 05:43:22,463 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-16 05:43:22,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2021-12-16 05:43:22,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2021-12-16 05:43:22,785 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-16 05:43:22,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2021-12-16 05:43:22,791 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-16 05:43:22,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-16 05:43:22,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 05:43:22,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 05:43:39,266 WARN L227 SmtUtils]: Spent 9.00s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-16 05:43:39,290 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 1388 treesize of output 1380 [2021-12-16 05:43:39,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-16 05:43:40,588 INFO L354 Elim1Store]: treesize reduction 591, result has 51.0 percent of original size [2021-12-16 05:43:40,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 15 new quantified variables, introduced 92 case distinctions, treesize of input 548382 treesize of output 506952