./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/forester-heap/sll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ff03de63 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-circular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:14:05,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:14:05,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:14:05,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:14:05,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:14:05,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:14:05,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:14:05,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:14:05,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:14:05,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:14:05,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:14:05,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:14:05,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:14:05,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:14:05,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:14:05,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:14:05,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:14:05,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:14:05,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:14:05,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:14:05,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:14:05,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:14:05,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:14:05,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:14:05,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:14:05,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:14:05,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:14:05,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:14:05,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:14:05,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:14:05,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:14:05,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:14:05,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:14:05,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:14:05,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:14:05,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:14:05,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:14:05,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:14:05,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:14:05,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:14:05,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:14:05,293 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:14:05,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:14:05,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:14:05,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:14:05,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:14:05,318 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:14:05,318 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:14:05,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:14:05,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:14:05,319 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:14:05,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:14:05,319 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:14:05,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:14:05,321 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:14:05,321 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:14:05,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:14:05,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:14:05,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:14:05,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:14:05,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:14:05,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:14:05,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:14:05,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:14:05,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:14:05,322 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:14:05,322 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 [2021-12-21 18:14:05,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:14:05,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:14:05,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:14:05,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:14:05,520 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:14:05,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-circular-1.i [2021-12-21 18:14:05,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37dde28d5/2017c8a47ade4842bd1d03c9c1425d0d/FLAG5933b5470 [2021-12-21 18:14:05,970 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:14:05,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-circular-1.i [2021-12-21 18:14:05,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37dde28d5/2017c8a47ade4842bd1d03c9c1425d0d/FLAG5933b5470 [2021-12-21 18:14:05,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37dde28d5/2017c8a47ade4842bd1d03c9c1425d0d [2021-12-21 18:14:05,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:14:05,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:14:06,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:14:06,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:14:06,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:14:06,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:14:05" (1/1) ... [2021-12-21 18:14:06,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a54acb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06, skipping insertion in model container [2021-12-21 18:14:06,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:14:05" (1/1) ... [2021-12-21 18:14:06,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:14:06,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:14:06,229 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-circular-1.i[22324,22337] [2021-12-21 18:14:06,234 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-circular-1.i[22430,22443] [2021-12-21 18:14:06,236 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-circular-1.i[22555,22568] [2021-12-21 18:14:06,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:14:06,251 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:14:06,279 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-circular-1.i[22324,22337] [2021-12-21 18:14:06,283 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-circular-1.i[22430,22443] [2021-12-21 18:14:06,285 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-circular-1.i[22555,22568] [2021-12-21 18:14:06,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:14:06,307 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:14:06,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06 WrapperNode [2021-12-21 18:14:06,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:14:06,309 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:14:06,309 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:14:06,310 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:14:06,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,326 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,342 INFO L137 Inliner]: procedures = 119, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 119 [2021-12-21 18:14:06,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:14:06,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:14:06,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:14:06,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:14:06,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:14:06,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:14:06,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:14:06,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:14:06,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (1/1) ... [2021-12-21 18:14:06,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:14:06,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:14:06,393 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) [2021-12-21 18:14:06,401 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 [2021-12-21 18:14:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 18:14:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 18:14:06,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:14:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:14:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:14:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 18:14:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:14:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 18:14:06,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:14:06,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:14:06,502 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:14:06,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:14:06,808 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:14:06,812 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:14:06,813 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-21 18:14:06,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:14:06 BoogieIcfgContainer [2021-12-21 18:14:06,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:14:06,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:14:06,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:14:06,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:14:06,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:14:05" (1/3) ... [2021-12-21 18:14:06,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7131cda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:14:06, skipping insertion in model container [2021-12-21 18:14:06,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:06" (2/3) ... [2021-12-21 18:14:06,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7131cda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:14:06, skipping insertion in model container [2021-12-21 18:14:06,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:14:06" (3/3) ... [2021-12-21 18:14:06,823 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2021-12-21 18:14:06,826 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:14:06,826 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-12-21 18:14:06,853 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:14:06,857 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 [2021-12-21 18:14:06,858 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-12-21 18:14:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 101 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:14:06,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:06,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:14:06,873 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-21 18:14:06,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:06,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722690229] [2021-12-21 18:14:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:06,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:07,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:07,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722690229] [2021-12-21 18:14:07,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722690229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:07,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:07,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:14:07,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607612612] [2021-12-21 18:14:07,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:07,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:07,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:07,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:07,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:07,036 INFO L87 Difference]: Start difference. First operand has 102 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 101 states have internal predecessors, (120), 0 states have call successors, (0), 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) [2021-12-21 18:14:07,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:07,129 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-12-21 18:14:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:07,131 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 [2021-12-21 18:14:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:07,137 INFO L225 Difference]: With dead ends: 108 [2021-12-21 18:14:07,138 INFO L226 Difference]: Without dead ends: 106 [2021-12-21 18:14:07,139 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 [2021-12-21 18:14:07,142 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 86 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:07,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 77 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-12-21 18:14:07,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 96. [2021-12-21 18:14:07,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 54 states have (on average 1.8888888888888888) internal successors, (102), 95 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-12-21 18:14:07,172 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 3 [2021-12-21 18:14:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:07,172 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-12-21 18:14:07,173 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) [2021-12-21 18:14:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-12-21 18:14:07,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:14:07,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:07,173 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:14:07,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 18:14:07,174 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:07,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-21 18:14:07,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:07,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340613869] [2021-12-21 18:14:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:07,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:07,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:07,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340613869] [2021-12-21 18:14:07,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340613869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:07,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:07,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:14:07,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089449898] [2021-12-21 18:14:07,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:07,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:07,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:07,222 INFO L87 Difference]: Start difference. First operand 96 states and 102 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) [2021-12-21 18:14:07,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:07,288 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-12-21 18:14:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:07,288 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 [2021-12-21 18:14:07,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:07,292 INFO L225 Difference]: With dead ends: 104 [2021-12-21 18:14:07,292 INFO L226 Difference]: Without dead ends: 104 [2021-12-21 18:14:07,293 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 [2021-12-21 18:14:07,294 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 84 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:07,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 77 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:14:07,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-21 18:14:07,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 92. [2021-12-21 18:14:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 91 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2021-12-21 18:14:07,309 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 3 [2021-12-21 18:14:07,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:07,313 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2021-12-21 18:14:07,313 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) [2021-12-21 18:14:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2021-12-21 18:14:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 18:14:07,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:07,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:07,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 18:14:07,315 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:07,316 INFO L85 PathProgramCache]: Analyzing trace with hash 59263652, now seen corresponding path program 1 times [2021-12-21 18:14:07,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:07,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938922807] [2021-12-21 18:14:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:07,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:07,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:07,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938922807] [2021-12-21 18:14:07,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938922807] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:07,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:07,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:07,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046255422] [2021-12-21 18:14:07,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:07,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:14:07,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:14:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:14:07,365 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:07,445 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2021-12-21 18:14:07,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:14:07,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 18:14:07,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:07,449 INFO L225 Difference]: With dead ends: 90 [2021-12-21 18:14:07,449 INFO L226 Difference]: Without dead ends: 90 [2021-12-21 18:14:07,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:07,455 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 137 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:07,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 52 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:07,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-21 18:14:07,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2021-12-21 18:14:07,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.6111111111111112) internal successors, (87), 80 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2021-12-21 18:14:07,463 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 8 [2021-12-21 18:14:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:07,463 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2021-12-21 18:14:07,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,464 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2021-12-21 18:14:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 18:14:07,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:07,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:07,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 18:14:07,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:07,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 59263653, now seen corresponding path program 1 times [2021-12-21 18:14:07,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:07,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112787418] [2021-12-21 18:14:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:07,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:07,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:07,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112787418] [2021-12-21 18:14:07,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112787418] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:07,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:07,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:07,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319392431] [2021-12-21 18:14:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:07,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:14:07,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:07,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:14:07,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:14:07,522 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:07,613 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2021-12-21 18:14:07,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:14:07,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 18:14:07,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:07,614 INFO L225 Difference]: With dead ends: 101 [2021-12-21 18:14:07,614 INFO L226 Difference]: Without dead ends: 101 [2021-12-21 18:14:07,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:07,622 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 87 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:07,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 97 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:07,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-21 18:14:07,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2021-12-21 18:14:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 86 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-12-21 18:14:07,633 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 8 [2021-12-21 18:14:07,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:07,633 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-12-21 18:14:07,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-12-21 18:14:07,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:14:07,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:07,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:07,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 18:14:07,635 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:07,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash 460324999, now seen corresponding path program 1 times [2021-12-21 18:14:07,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:07,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942946646] [2021-12-21 18:14:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:07,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:07,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:07,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942946646] [2021-12-21 18:14:07,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942946646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:07,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:07,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:14:07,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478438164] [2021-12-21 18:14:07,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:07,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:07,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:07,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:07,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:07,763 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:07,938 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2021-12-21 18:14:07,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-21 18:14:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:07,940 INFO L225 Difference]: With dead ends: 170 [2021-12-21 18:14:07,940 INFO L226 Difference]: Without dead ends: 170 [2021-12-21 18:14:07,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:14:07,941 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 316 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:07,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 295 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:07,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-21 18:14:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 90. [2021-12-21 18:14:07,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 89 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2021-12-21 18:14:07,944 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 12 [2021-12-21 18:14:07,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:07,944 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2021-12-21 18:14:07,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:07,945 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2021-12-21 18:14:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:14:07,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:07,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:07,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 18:14:07,945 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash 467003055, now seen corresponding path program 1 times [2021-12-21 18:14:07,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:07,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555044112] [2021-12-21 18:14:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:07,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:07,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555044112] [2021-12-21 18:14:07,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555044112] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:07,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:07,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:07,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176404988] [2021-12-21 18:14:07,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:07,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:07,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:07,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:07,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:07,987 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:08,106 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-12-21 18:14:08,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:08,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-21 18:14:08,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:08,107 INFO L225 Difference]: With dead ends: 89 [2021-12-21 18:14:08,107 INFO L226 Difference]: Without dead ends: 89 [2021-12-21 18:14:08,107 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 [2021-12-21 18:14:08,107 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 60 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:08,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 183 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:08,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-21 18:14:08,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-21 18:14:08,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 63 states have (on average 1.5238095238095237) internal successors, (96), 88 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2021-12-21 18:14:08,110 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 12 [2021-12-21 18:14:08,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:08,110 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2021-12-21 18:14:08,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,110 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2021-12-21 18:14:08,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:14:08,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:08,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:08,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 18:14:08,111 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:08,111 INFO L85 PathProgramCache]: Analyzing trace with hash 467003056, now seen corresponding path program 1 times [2021-12-21 18:14:08,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:08,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219066566] [2021-12-21 18:14:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:08,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:08,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:08,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219066566] [2021-12-21 18:14:08,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219066566] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:08,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:08,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:08,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916766058] [2021-12-21 18:14:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:08,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:08,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:08,182 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:08,317 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2021-12-21 18:14:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:14:08,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-21 18:14:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:08,318 INFO L225 Difference]: With dead ends: 85 [2021-12-21 18:14:08,318 INFO L226 Difference]: Without dead ends: 85 [2021-12-21 18:14:08,318 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 [2021-12-21 18:14:08,319 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 22 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:08,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 238 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:08,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-21 18:14:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2021-12-21 18:14:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 80 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2021-12-21 18:14:08,321 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 12 [2021-12-21 18:14:08,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:08,322 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2021-12-21 18:14:08,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2021-12-21 18:14:08,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 18:14:08,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:08,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:08,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 18:14:08,323 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:08,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:08,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1385177244, now seen corresponding path program 1 times [2021-12-21 18:14:08,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:08,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399352857] [2021-12-21 18:14:08,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:08,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:08,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:08,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399352857] [2021-12-21 18:14:08,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399352857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:08,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:08,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:08,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057570408] [2021-12-21 18:14:08,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:08,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:08,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:08,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:08,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:08,434 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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) [2021-12-21 18:14:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:08,608 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2021-12-21 18:14:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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 [2021-12-21 18:14:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:08,609 INFO L225 Difference]: With dead ends: 124 [2021-12-21 18:14:08,609 INFO L226 Difference]: Without dead ends: 124 [2021-12-21 18:14:08,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:14:08,610 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 249 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:08,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 202 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-21 18:14:08,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 83. [2021-12-21 18:14:08,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 62 states have (on average 1.467741935483871) internal successors, (91), 82 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) [2021-12-21 18:14:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-12-21 18:14:08,612 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 13 [2021-12-21 18:14:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:08,612 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-12-21 18:14:08,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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) [2021-12-21 18:14:08,612 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-12-21 18:14:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 18:14:08,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:08,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:08,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 18:14:08,613 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:08,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:08,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1385177245, now seen corresponding path program 1 times [2021-12-21 18:14:08,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:08,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250082343] [2021-12-21 18:14:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:08,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:08,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:08,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:08,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250082343] [2021-12-21 18:14:08,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250082343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:08,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:08,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:08,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519704173] [2021-12-21 18:14:08,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:08,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:08,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:08,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:08,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:08,745 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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) [2021-12-21 18:14:08,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:08,952 INFO L93 Difference]: Finished difference Result 158 states and 169 transitions. [2021-12-21 18:14:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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 [2021-12-21 18:14:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:08,953 INFO L225 Difference]: With dead ends: 158 [2021-12-21 18:14:08,953 INFO L226 Difference]: Without dead ends: 158 [2021-12-21 18:14:08,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:08,953 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 277 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:08,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 236 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-21 18:14:08,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 95. [2021-12-21 18:14:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.472972972972973) internal successors, (109), 94 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:08,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2021-12-21 18:14:08,956 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 13 [2021-12-21 18:14:08,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:08,956 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2021-12-21 18:14:08,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 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) [2021-12-21 18:14:08,956 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2021-12-21 18:14:08,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 18:14:08,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:08,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:08,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 18:14:08,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:08,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash -230426379, now seen corresponding path program 1 times [2021-12-21 18:14:08,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:08,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752157197] [2021-12-21 18:14:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:08,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:08,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:09,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:09,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752157197] [2021-12-21 18:14:09,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752157197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:09,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:09,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:14:09,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101867436] [2021-12-21 18:14:09,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:09,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:14:09,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:09,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:14:09,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:14:09,039 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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) [2021-12-21 18:14:09,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:09,277 INFO L93 Difference]: Finished difference Result 143 states and 154 transitions. [2021-12-21 18:14:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:14:09,277 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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 [2021-12-21 18:14:09,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:09,278 INFO L225 Difference]: With dead ends: 143 [2021-12-21 18:14:09,278 INFO L226 Difference]: Without dead ends: 143 [2021-12-21 18:14:09,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-12-21 18:14:09,279 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 251 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:09,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 341 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-21 18:14:09,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 95. [2021-12-21 18:14:09,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 94 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:09,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2021-12-21 18:14:09,287 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 16 [2021-12-21 18:14:09,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:09,287 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2021-12-21 18:14:09,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 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) [2021-12-21 18:14:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2021-12-21 18:14:09,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 18:14:09,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:09,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:09,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 18:14:09,288 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:09,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:09,288 INFO L85 PathProgramCache]: Analyzing trace with hash -230426378, now seen corresponding path program 1 times [2021-12-21 18:14:09,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:09,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217369463] [2021-12-21 18:14:09,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:09,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:09,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:09,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217369463] [2021-12-21 18:14:09,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217369463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:09,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:09,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:09,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961710038] [2021-12-21 18:14:09,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:09,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:09,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:09,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:09,431 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) 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) [2021-12-21 18:14:09,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:09,624 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2021-12-21 18:14:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:14:09,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) 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 [2021-12-21 18:14:09,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:09,625 INFO L225 Difference]: With dead ends: 153 [2021-12-21 18:14:09,625 INFO L226 Difference]: Without dead ends: 153 [2021-12-21 18:14:09,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:14:09,626 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 216 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:09,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 248 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:09,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-12-21 18:14:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 95. [2021-12-21 18:14:09,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 74 states have (on average 1.445945945945946) internal successors, (107), 94 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2021-12-21 18:14:09,628 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 16 [2021-12-21 18:14:09,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:09,628 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2021-12-21 18:14:09,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) 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) [2021-12-21 18:14:09,628 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2021-12-21 18:14:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 18:14:09,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:09,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:09,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 18:14:09,629 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1446702036, now seen corresponding path program 1 times [2021-12-21 18:14:09,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:09,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649004425] [2021-12-21 18:14:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:09,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:09,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649004425] [2021-12-21 18:14:09,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649004425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:09,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:09,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:09,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994947771] [2021-12-21 18:14:09,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:09,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:09,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:09,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:09,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:09,691 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:09,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:09,866 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2021-12-21 18:14:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:09,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-12-21 18:14:09,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:09,867 INFO L225 Difference]: With dead ends: 134 [2021-12-21 18:14:09,867 INFO L226 Difference]: Without dead ends: 134 [2021-12-21 18:14:09,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:14:09,868 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 231 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:09,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 210 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-21 18:14:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 112. [2021-12-21 18:14:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.5164835164835164) internal successors, (138), 111 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) [2021-12-21 18:14:09,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2021-12-21 18:14:09,870 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 17 [2021-12-21 18:14:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:09,870 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2021-12-21 18:14:09,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2021-12-21 18:14:09,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 18:14:09,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:09,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:09,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 18:14:09,873 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1446702037, now seen corresponding path program 1 times [2021-12-21 18:14:09,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:09,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456223395] [2021-12-21 18:14:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:09,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:09,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:09,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456223395] [2021-12-21 18:14:09,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456223395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:09,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:09,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:09,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551735872] [2021-12-21 18:14:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:09,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:09,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:09,990 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:10,177 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2021-12-21 18:14:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-12-21 18:14:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:10,178 INFO L225 Difference]: With dead ends: 152 [2021-12-21 18:14:10,178 INFO L226 Difference]: Without dead ends: 152 [2021-12-21 18:14:10,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:10,179 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 205 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:10,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 199 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-12-21 18:14:10,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 117. [2021-12-21 18:14:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 96 states have (on average 1.4895833333333333) internal successors, (143), 116 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 143 transitions. [2021-12-21 18:14:10,182 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 143 transitions. Word has length 17 [2021-12-21 18:14:10,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:10,182 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 143 transitions. [2021-12-21 18:14:10,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,182 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 143 transitions. [2021-12-21 18:14:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-21 18:14:10,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:10,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:10,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 18:14:10,183 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:10,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:10,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1499460812, now seen corresponding path program 1 times [2021-12-21 18:14:10,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:10,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000297593] [2021-12-21 18:14:10,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:10,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:10,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:10,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:10,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000297593] [2021-12-21 18:14:10,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000297593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:10,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:10,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:14:10,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855355446] [2021-12-21 18:14:10,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:10,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:10,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:10,218 INFO L87 Difference]: Start difference. First operand 117 states and 143 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:10,294 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2021-12-21 18:14:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:14:10,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-12-21 18:14:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:10,295 INFO L225 Difference]: With dead ends: 119 [2021-12-21 18:14:10,295 INFO L226 Difference]: Without dead ends: 119 [2021-12-21 18:14:10,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:10,296 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 17 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:10,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 307 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:14:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-21 18:14:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115. [2021-12-21 18:14:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.4842105263157894) internal successors, (141), 114 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) [2021-12-21 18:14:10,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2021-12-21 18:14:10,298 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 141 transitions. Word has length 17 [2021-12-21 18:14:10,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:10,299 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 141 transitions. [2021-12-21 18:14:10,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,299 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 141 transitions. [2021-12-21 18:14:10,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 18:14:10,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:10,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:10,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 18:14:10,300 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:10,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1296321320, now seen corresponding path program 1 times [2021-12-21 18:14:10,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:10,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788627049] [2021-12-21 18:14:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:10,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:10,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:10,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788627049] [2021-12-21 18:14:10,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788627049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:10,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:10,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:10,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140654281] [2021-12-21 18:14:10,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:10,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:14:10,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:14:10,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:14:10,388 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:10,504 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2021-12-21 18:14:10,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:14:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-21 18:14:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:10,505 INFO L225 Difference]: With dead ends: 146 [2021-12-21 18:14:10,505 INFO L226 Difference]: Without dead ends: 146 [2021-12-21 18:14:10,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:10,505 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 163 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:10,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 248 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:10,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-12-21 18:14:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 116. [2021-12-21 18:14:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 96 states have (on average 1.4791666666666667) internal successors, (142), 115 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) [2021-12-21 18:14:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2021-12-21 18:14:10,507 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 20 [2021-12-21 18:14:10,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:10,508 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2021-12-21 18:14:10,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2021-12-21 18:14:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 18:14:10,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:10,508 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] [2021-12-21 18:14:10,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 18:14:10,508 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:10,509 INFO L85 PathProgramCache]: Analyzing trace with hash -852633064, now seen corresponding path program 1 times [2021-12-21 18:14:10,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:10,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991728543] [2021-12-21 18:14:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:10,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:10,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:10,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991728543] [2021-12-21 18:14:10,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991728543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:10,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:10,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:10,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723206286] [2021-12-21 18:14:10,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:10,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:10,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:10,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:10,527 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:10,532 INFO L93 Difference]: Finished difference Result 119 states and 145 transitions. [2021-12-21 18:14:10,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:10,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-21 18:14:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:10,533 INFO L225 Difference]: With dead ends: 119 [2021-12-21 18:14:10,533 INFO L226 Difference]: Without dead ends: 119 [2021-12-21 18:14:10,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:10,533 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:10,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:14:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-21 18:14:10,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-21 18:14:10,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 99 states have (on average 1.4646464646464648) internal successors, (145), 118 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-12-21 18:14:10,536 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 20 [2021-12-21 18:14:10,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:10,536 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-12-21 18:14:10,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-12-21 18:14:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:14:10,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:10,537 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] [2021-12-21 18:14:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 18:14:10,537 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:10,537 INFO L85 PathProgramCache]: Analyzing trace with hash -661774329, now seen corresponding path program 1 times [2021-12-21 18:14:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:10,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697956003] [2021-12-21 18:14:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:10,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:10,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:10,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:10,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697956003] [2021-12-21 18:14:10,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697956003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:10,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:10,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:14:10,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206484848] [2021-12-21 18:14:10,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:10,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:14:10,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:10,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:14:10,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:10,566 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:10,633 INFO L93 Difference]: Finished difference Result 118 states and 142 transitions. [2021-12-21 18:14:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:14:10,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-12-21 18:14:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:10,634 INFO L225 Difference]: With dead ends: 118 [2021-12-21 18:14:10,634 INFO L226 Difference]: Without dead ends: 118 [2021-12-21 18:14:10,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:10,635 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 29 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:10,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 157 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-12-21 18:14:10,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2021-12-21 18:14:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.4343434343434343) internal successors, (142), 117 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) [2021-12-21 18:14:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2021-12-21 18:14:10,637 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 21 [2021-12-21 18:14:10,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:10,638 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2021-12-21 18:14:10,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,638 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2021-12-21 18:14:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:14:10,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:10,638 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] [2021-12-21 18:14:10,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 18:14:10,639 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:10,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:10,639 INFO L85 PathProgramCache]: Analyzing trace with hash -661774328, now seen corresponding path program 1 times [2021-12-21 18:14:10,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:10,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894807509] [2021-12-21 18:14:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:10,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:10,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:10,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894807509] [2021-12-21 18:14:10,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894807509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:10,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:10,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 18:14:10,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382153532] [2021-12-21 18:14:10,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:10,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 18:14:10,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 18:14:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:10,740 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:10,999 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2021-12-21 18:14:10,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 18:14:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-12-21 18:14:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:11,000 INFO L225 Difference]: With dead ends: 138 [2021-12-21 18:14:11,000 INFO L226 Difference]: Without dead ends: 138 [2021-12-21 18:14:11,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-21 18:14:11,001 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 171 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:11,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 393 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-12-21 18:14:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 118. [2021-12-21 18:14:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 117 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) [2021-12-21 18:14:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2021-12-21 18:14:11,003 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 21 [2021-12-21 18:14:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:11,003 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2021-12-21 18:14:11,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:11,003 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2021-12-21 18:14:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:14:11,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:11,003 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] [2021-12-21 18:14:11,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 18:14:11,003 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2015766217, now seen corresponding path program 1 times [2021-12-21 18:14:11,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:11,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253092412] [2021-12-21 18:14:11,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:11,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:11,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:11,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253092412] [2021-12-21 18:14:11,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253092412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:11,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:11,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:11,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378385695] [2021-12-21 18:14:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:11,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:11,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:11,026 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:11,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:11,033 INFO L93 Difference]: Finished difference Result 185 states and 212 transitions. [2021-12-21 18:14:11,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:11,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2021-12-21 18:14:11,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:11,035 INFO L225 Difference]: With dead ends: 185 [2021-12-21 18:14:11,035 INFO L226 Difference]: Without dead ends: 185 [2021-12-21 18:14:11,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:11,036 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 60 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:11,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 145 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:14:11,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-21 18:14:11,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 131. [2021-12-21 18:14:11,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 112 states have (on average 1.3928571428571428) internal successors, (156), 130 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) [2021-12-21 18:14:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 156 transitions. [2021-12-21 18:14:11,039 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 156 transitions. Word has length 21 [2021-12-21 18:14:11,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:11,040 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 156 transitions. [2021-12-21 18:14:11,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:11,040 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 156 transitions. [2021-12-21 18:14:11,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:14:11,040 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:11,040 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] [2021-12-21 18:14:11,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 18:14:11,041 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr45ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:11,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -224265605, now seen corresponding path program 1 times [2021-12-21 18:14:11,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:11,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345440055] [2021-12-21 18:14:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:11,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:11,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:11,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:11,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:11,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345440055] [2021-12-21 18:14:11,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345440055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:11,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:11,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 18:14:11,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376154569] [2021-12-21 18:14:11,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:11,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:14:11,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:11,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:14:11,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:14:11,149 INFO L87 Difference]: Start difference. First operand 131 states and 156 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:11,339 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2021-12-21 18:14:11,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:11,340 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-21 18:14:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:11,340 INFO L225 Difference]: With dead ends: 149 [2021-12-21 18:14:11,341 INFO L226 Difference]: Without dead ends: 149 [2021-12-21 18:14:11,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:14:11,341 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 196 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:11,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 335 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-12-21 18:14:11,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 131. [2021-12-21 18:14:11,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 112 states have (on average 1.3839285714285714) internal successors, (155), 130 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:11,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 155 transitions. [2021-12-21 18:14:11,343 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 155 transitions. Word has length 22 [2021-12-21 18:14:11,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:11,343 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 155 transitions. [2021-12-21 18:14:11,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 155 transitions. [2021-12-21 18:14:11,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 18:14:11,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:11,344 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] [2021-12-21 18:14:11,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 18:14:11,344 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash -350969464, now seen corresponding path program 1 times [2021-12-21 18:14:11,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793232311] [2021-12-21 18:14:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:11,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:11,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:11,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793232311] [2021-12-21 18:14:11,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793232311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:11,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:11,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:11,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934481990] [2021-12-21 18:14:11,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:11,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:11,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:11,374 INFO L87 Difference]: Start difference. First operand 131 states and 155 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2021-12-21 18:14:11,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:11,467 INFO L93 Difference]: Finished difference Result 134 states and 157 transitions. [2021-12-21 18:14:11,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 18:14:11,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 [2021-12-21 18:14:11,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:11,467 INFO L225 Difference]: With dead ends: 134 [2021-12-21 18:14:11,468 INFO L226 Difference]: Without dead ends: 134 [2021-12-21 18:14:11,468 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 [2021-12-21 18:14:11,468 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 73 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:11,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 154 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-21 18:14:11,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-12-21 18:14:11,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 113 states have (on average 1.3805309734513274) internal successors, (156), 131 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) [2021-12-21 18:14:11,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 156 transitions. [2021-12-21 18:14:11,471 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 156 transitions. Word has length 23 [2021-12-21 18:14:11,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:11,471 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 156 transitions. [2021-12-21 18:14:11,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2021-12-21 18:14:11,471 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 156 transitions. [2021-12-21 18:14:11,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 18:14:11,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:11,472 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] [2021-12-21 18:14:11,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 18:14:11,472 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash -350969463, now seen corresponding path program 1 times [2021-12-21 18:14:11,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:11,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599843117] [2021-12-21 18:14:11,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:11,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:11,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:11,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599843117] [2021-12-21 18:14:11,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599843117] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:14:11,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596802569] [2021-12-21 18:14:11,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:11,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:14:11,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:14:11,612 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) [2021-12-21 18:14:11,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 18:14:11,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:11,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 18:14:11,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:11,842 INFO L387 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 23 treesize of output 15 [2021-12-21 18:14:11,845 INFO L387 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 28 treesize of output 16 [2021-12-21 18:14:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:11,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:11,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596802569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:11,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 18:14:11,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2021-12-21 18:14:11,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594244267] [2021-12-21 18:14:11,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:11,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:11,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:11,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:11,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:14:11,872 INFO L87 Difference]: Start difference. First operand 132 states and 156 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2021-12-21 18:14:12,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:12,013 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2021-12-21 18:14:12,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 18:14:12,014 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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 [2021-12-21 18:14:12,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:12,014 INFO L225 Difference]: With dead ends: 132 [2021-12-21 18:14:12,014 INFO L226 Difference]: Without dead ends: 132 [2021-12-21 18:14:12,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-12-21 18:14:12,015 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 61 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:12,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 165 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-21 18:14:12,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-12-21 18:14:12,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 113 states have (on average 1.345132743362832) internal successors, (152), 130 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2021-12-21 18:14:12,017 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 23 [2021-12-21 18:14:12,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:12,017 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2021-12-21 18:14:12,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 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) [2021-12-21 18:14:12,017 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2021-12-21 18:14:12,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 18:14:12,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:12,017 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] [2021-12-21 18:14:12,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:12,227 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,SelfDestructingSolverStorable21 [2021-12-21 18:14:12,227 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:12,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:12,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1019044192, now seen corresponding path program 1 times [2021-12-21 18:14:12,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:12,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606554068] [2021-12-21 18:14:12,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:12,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:12,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:12,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:12,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606554068] [2021-12-21 18:14:12,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606554068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:12,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:12,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 18:14:12,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949263657] [2021-12-21 18:14:12,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:12,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 18:14:12,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:12,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 18:14:12,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 18:14:12,354 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-12-21 18:14:12,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:12,638 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2021-12-21 18:14:12,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 18:14:12,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 [2021-12-21 18:14:12,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:12,639 INFO L225 Difference]: With dead ends: 144 [2021-12-21 18:14:12,639 INFO L226 Difference]: Without dead ends: 144 [2021-12-21 18:14:12,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2021-12-21 18:14:12,640 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 134 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:12,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 432 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:12,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-21 18:14:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130. [2021-12-21 18:14:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 112 states have (on average 1.3392857142857142) internal successors, (150), 129 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) [2021-12-21 18:14:12,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 150 transitions. [2021-12-21 18:14:12,642 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 150 transitions. Word has length 24 [2021-12-21 18:14:12,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:12,642 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 150 transitions. [2021-12-21 18:14:12,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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) [2021-12-21 18:14:12,642 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 150 transitions. [2021-12-21 18:14:12,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 18:14:12,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:12,642 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] [2021-12-21 18:14:12,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 18:14:12,643 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:12,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:12,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1710834765, now seen corresponding path program 1 times [2021-12-21 18:14:12,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:12,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411533721] [2021-12-21 18:14:12,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:12,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:12,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:12,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411533721] [2021-12-21 18:14:12,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411533721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:14:12,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232990413] [2021-12-21 18:14:12,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:12,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:14:12,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:14:12,754 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) [2021-12-21 18:14:12,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 18:14:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:12,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-21 18:14:12,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:12,839 INFO L387 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 [2021-12-21 18:14:12,891 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:14:12,892 INFO L387 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 [2021-12-21 18:14:12,923 INFO L387 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 [2021-12-21 18:14:13,010 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:13,010 INFO L387 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 30 treesize of output 28 [2021-12-21 18:14:13,045 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:13,046 INFO L387 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 30 treesize of output 28 [2021-12-21 18:14:13,099 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:13,099 INFO L387 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 27 treesize of output 28 [2021-12-21 18:14:13,121 INFO L387 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 24 treesize of output 12 [2021-12-21 18:14:13,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:13,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:14:13,140 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_551 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_551) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-12-21 18:14:13,172 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_551 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_551) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-12-21 18:14:13,178 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_551 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_551) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 0))) is different from false [2021-12-21 18:14:13,187 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:13,187 INFO L387 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 19 treesize of output 20 [2021-12-21 18:14:13,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:13,199 INFO L387 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 33 treesize of output 36 [2021-12-21 18:14:13,201 INFO L387 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 20 treesize of output 18 [2021-12-21 18:14:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-21 18:14:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232990413] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:14:13,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:14:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 25 [2021-12-21 18:14:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894938812] [2021-12-21 18:14:13,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:14:13,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-21 18:14:13,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-21 18:14:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=401, Unknown=3, NotChecked=126, Total=600 [2021-12-21 18:14:13,319 INFO L87 Difference]: Start difference. First operand 130 states and 150 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2021-12-21 18:14:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:13,923 INFO L93 Difference]: Finished difference Result 235 states and 263 transitions. [2021-12-21 18:14:13,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 18:14:13,924 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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 24 [2021-12-21 18:14:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:13,924 INFO L225 Difference]: With dead ends: 235 [2021-12-21 18:14:13,924 INFO L226 Difference]: Without dead ends: 235 [2021-12-21 18:14:13,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=804, Unknown=3, NotChecked=186, Total=1190 [2021-12-21 18:14:13,925 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 220 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 1499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 469 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:13,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 859 Invalid, 1499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 999 Invalid, 0 Unknown, 469 Unchecked, 0.4s Time] [2021-12-21 18:14:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-21 18:14:13,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 152. [2021-12-21 18:14:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 134 states have (on average 1.3059701492537314) internal successors, (175), 151 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 175 transitions. [2021-12-21 18:14:13,928 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 175 transitions. Word has length 24 [2021-12-21 18:14:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:13,928 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 175 transitions. [2021-12-21 18:14:13,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 25 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) [2021-12-21 18:14:13,928 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 175 transitions. [2021-12-21 18:14:13,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 18:14:13,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:13,929 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] [2021-12-21 18:14:13,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:14,139 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,SelfDestructingSolverStorable23 [2021-12-21 18:14:14,139 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:14,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:14,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2020763981, now seen corresponding path program 1 times [2021-12-21 18:14:14,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:14,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334482287] [2021-12-21 18:14:14,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:14,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:14,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:14,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334482287] [2021-12-21 18:14:14,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334482287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:14:14,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822370444] [2021-12-21 18:14:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:14,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:14:14,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:14:14,250 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) [2021-12-21 18:14:14,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 18:14:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:14,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 18:14:14,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:14,406 INFO L387 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 17 [2021-12-21 18:14:14,408 INFO L387 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 21 treesize of output 13 [2021-12-21 18:14:14,439 INFO L387 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 [2021-12-21 18:14:14,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:14,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:14,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822370444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:14,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 18:14:14,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2021-12-21 18:14:14,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346097283] [2021-12-21 18:14:14,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:14,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:14:14,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:14,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:14:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-21 18:14:14,455 INFO L87 Difference]: Start difference. First operand 152 states and 175 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:14,657 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2021-12-21 18:14:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2021-12-21 18:14:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:14,659 INFO L225 Difference]: With dead ends: 170 [2021-12-21 18:14:14,659 INFO L226 Difference]: Without dead ends: 170 [2021-12-21 18:14:14,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-12-21 18:14:14,660 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 32 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:14,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 304 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:14,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-21 18:14:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2021-12-21 18:14:14,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 164 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 190 transitions. [2021-12-21 18:14:14,662 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 190 transitions. Word has length 25 [2021-12-21 18:14:14,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:14,663 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 190 transitions. [2021-12-21 18:14:14,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:14,663 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 190 transitions. [2021-12-21 18:14:14,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 18:14:14,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:14,663 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:14,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:14,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:14:14,879 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:14,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1496266000, now seen corresponding path program 1 times [2021-12-21 18:14:14,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:14,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339435766] [2021-12-21 18:14:14,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:14,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:14,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:14:14,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339435766] [2021-12-21 18:14:14,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339435766] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:14:14,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012652918] [2021-12-21 18:14:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:14,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:14:14,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:14:14,980 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) [2021-12-21 18:14:14,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 18:14:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:15,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 18:14:15,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:15,072 INFO L387 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 [2021-12-21 18:14:15,132 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:14:15,132 INFO L387 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 [2021-12-21 18:14:15,165 INFO L387 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 [2021-12-21 18:14:15,261 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:15,261 INFO L387 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 [2021-12-21 18:14:15,293 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:15,293 INFO L387 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 [2021-12-21 18:14:15,343 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:15,344 INFO L387 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 [2021-12-21 18:14:15,366 INFO L387 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 [2021-12-21 18:14:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:15,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:14:15,466 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_678 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_678) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) 1)) is different from false [2021-12-21 18:14:15,496 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:15,497 INFO L387 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 [2021-12-21 18:14:15,502 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:15,502 INFO L387 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 [2021-12-21 18:14:15,506 INFO L387 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 [2021-12-21 18:14:17,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:17,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012652918] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:14:17,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:14:17,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-12-21 18:14:17,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939485766] [2021-12-21 18:14:17,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:14:17,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-21 18:14:17,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:14:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-21 18:14:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=477, Unknown=15, NotChecked=46, Total=650 [2021-12-21 18:14:17,800 INFO L87 Difference]: Start difference. First operand 165 states and 190 transitions. Second operand has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:18,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:18,044 INFO L93 Difference]: Finished difference Result 200 states and 233 transitions. [2021-12-21 18:14:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 18:14:18,045 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-21 18:14:18,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:18,045 INFO L225 Difference]: With dead ends: 200 [2021-12-21 18:14:18,045 INFO L226 Difference]: Without dead ends: 200 [2021-12-21 18:14:18,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=227, Invalid=818, Unknown=15, NotChecked=62, Total=1122 [2021-12-21 18:14:18,046 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 126 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 503 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:18,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 579 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 269 Invalid, 0 Unknown, 503 Unchecked, 0.1s Time] [2021-12-21 18:14:18,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-21 18:14:18,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 167. [2021-12-21 18:14:18,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 149 states have (on average 1.2953020134228188) internal successors, (193), 166 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:18,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 193 transitions. [2021-12-21 18:14:18,049 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 193 transitions. Word has length 25 [2021-12-21 18:14:18,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:18,049 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 193 transitions. [2021-12-21 18:14:18,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.72) internal successors, (68), 26 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:18,049 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 193 transitions. [2021-12-21 18:14:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 18:14:18,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:18,049 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] [2021-12-21 18:14:18,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:18,250 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,SelfDestructingSolverStorable25 [2021-12-21 18:14:18,250 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:18,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1496265999, now seen corresponding path program 1 times [2021-12-21 18:14:18,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:14:18,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149770125] [2021-12-21 18:14:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:18,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:14:18,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:18,279 ERROR L253 erpolLogProxyWrapper]: Interpolant 9 not inductive [2021-12-21 18:14:18,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-21 18:14:18,298 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:284) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:327) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-21 18:14:18,304 INFO L158 Benchmark]: Toolchain (without parser) took 12305.83ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 58.4MB in the beginning and 69.3MB in the end (delta: -10.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2021-12-21 18:14:18,305 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 18:14:18,305 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.86ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 63.1MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 18:14:18,305 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.57ms. Allocated memory is still 94.4MB. Free memory was 63.1MB in the beginning and 61.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:14:18,305 INFO L158 Benchmark]: Boogie Preprocessor took 24.97ms. Allocated memory is still 94.4MB. Free memory was 61.1MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 18:14:18,305 INFO L158 Benchmark]: RCFGBuilder took 445.18ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 42.2MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-21 18:14:18,305 INFO L158 Benchmark]: TraceAbstraction took 11488.55ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 41.8MB in the beginning and 69.3MB in the end (delta: -27.5MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2021-12-21 18:14:18,307 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 66.1MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.86ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 63.1MB in the end (delta: -4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.57ms. Allocated memory is still 94.4MB. Free memory was 63.1MB in the beginning and 61.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.97ms. Allocated memory is still 94.4MB. Free memory was 61.1MB in the beginning and 59.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 445.18ms. Allocated memory is still 94.4MB. Free memory was 59.3MB in the beginning and 42.2MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11488.55ms. Allocated memory was 94.4MB in the beginning and 144.7MB in the end (delta: 50.3MB). Free memory was 41.8MB in the beginning and 69.3MB in the end (delta: -27.5MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-21 18:14:18,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/forester-heap/sll-circular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:14:19,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:14:19,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:14:19,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:14:19,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:14:19,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:14:19,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:14:19,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:14:19,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:14:19,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:14:19,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:14:19,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:14:19,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:14:19,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:14:19,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:14:19,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:14:19,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:14:19,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:14:19,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:14:19,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:14:19,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:14:19,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:14:19,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:14:19,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:14:19,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:14:19,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:14:19,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:14:19,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:14:19,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:14:19,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:14:19,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:14:19,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:14:19,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:14:19,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:14:19,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:14:19,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:14:19,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:14:19,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:14:19,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:14:19,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:14:19,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:14:19,981 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-21 18:14:20,002 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:14:20,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:14:20,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:14:20,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:14:20,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:14:20,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:14:20,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:14:20,006 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:14:20,006 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:14:20,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:14:20,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:14:20,007 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:14:20,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:14:20,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:14:20,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:14:20,007 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 18:14:20,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:14:20,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:14:20,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:14:20,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:14:20,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:14:20,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:14:20,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:14:20,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:14:20,010 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 18:14:20,010 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 18:14:20,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:14:20,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 18:14:20,010 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c54160550402a2cf6139371c972b70bfa4a53acf207c90f67eed3e784812b38 [2021-12-21 18:14:20,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:14:20,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:14:20,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:14:20,264 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:14:20,264 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:14:20,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-circular-1.i [2021-12-21 18:14:20,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4085c260b/10d19234e73840008cca9ce8abedd07d/FLAGba7b8aa5e [2021-12-21 18:14:20,675 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:14:20,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-circular-1.i [2021-12-21 18:14:20,692 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4085c260b/10d19234e73840008cca9ce8abedd07d/FLAGba7b8aa5e [2021-12-21 18:14:21,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4085c260b/10d19234e73840008cca9ce8abedd07d [2021-12-21 18:14:21,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:14:21,059 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:14:21,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:14:21,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:14:21,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:14:21,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287d2802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21, skipping insertion in model container [2021-12-21 18:14:21,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:14:21,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:14:21,261 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-circular-1.i[22324,22337] [2021-12-21 18:14:21,281 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-circular-1.i[22430,22443] [2021-12-21 18:14:21,284 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-circular-1.i[22555,22568] [2021-12-21 18:14:21,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:14:21,294 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:14:21,317 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-circular-1.i[22324,22337] [2021-12-21 18:14:21,318 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-circular-1.i[22430,22443] [2021-12-21 18:14:21,319 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-circular-1.i[22555,22568] [2021-12-21 18:14:21,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:14:21,344 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:14:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21 WrapperNode [2021-12-21 18:14:21,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:14:21,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:14:21,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:14:21,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:14:21,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,375 INFO L137 Inliner]: procedures = 122, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 118 [2021-12-21 18:14:21,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:14:21,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:14:21,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:14:21,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:14:21,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:14:21,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:14:21,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:14:21,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:14:21,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (1/1) ... [2021-12-21 18:14:21,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:14:21,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:14:21,421 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) [2021-12-21 18:14:21,439 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 [2021-12-21 18:14:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-21 18:14:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:14:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:14:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:14:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 18:14:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:14:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-21 18:14:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 18:14:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:14:21,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:14:21,551 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:14:21,552 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:14:21,852 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:14:21,856 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:14:21,856 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-12-21 18:14:21,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:14:21 BoogieIcfgContainer [2021-12-21 18:14:21,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:14:21,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:14:21,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:14:21,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:14:21,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:14:21" (1/3) ... [2021-12-21 18:14:21,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7175e4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:14:21, skipping insertion in model container [2021-12-21 18:14:21,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:14:21" (2/3) ... [2021-12-21 18:14:21,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7175e4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:14:21, skipping insertion in model container [2021-12-21 18:14:21,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:14:21" (3/3) ... [2021-12-21 18:14:21,863 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-1.i [2021-12-21 18:14:21,866 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:14:21,867 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-12-21 18:14:21,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:14:21,899 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 [2021-12-21 18:14:21,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-12-21 18:14:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 53 states have (on average 2.2264150943396226) internal successors, (118), 99 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:14:21,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:21,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:14:21,923 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:21,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:21,930 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-21 18:14:21,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:21,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755633067] [2021-12-21 18:14:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:21,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:21,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:21,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:21,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 18:14:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:22,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 18:14:22,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:22,073 INFO L387 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 [2021-12-21 18:14:22,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:22,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:22,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755633067] [2021-12-21 18:14:22,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755633067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:22,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:22,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:14:22,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923040676] [2021-12-21 18:14:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:22,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:22,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:22,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:22,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:22,117 INFO L87 Difference]: Start difference. First operand has 100 states, 53 states have (on average 2.2264150943396226) internal successors, (118), 99 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-12-21 18:14:22,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:22,264 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2021-12-21 18:14:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:22,265 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 [2021-12-21 18:14:22,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:22,274 INFO L225 Difference]: With dead ends: 106 [2021-12-21 18:14:22,275 INFO L226 Difference]: Without dead ends: 104 [2021-12-21 18:14:22,276 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 [2021-12-21 18:14:22,279 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 84 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:22,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 75 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:22,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-21 18:14:22,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2021-12-21 18:14:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 52 states have (on average 1.9230769230769231) internal successors, (100), 93 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:22,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2021-12-21 18:14:22,311 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 3 [2021-12-21 18:14:22,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:22,311 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2021-12-21 18:14:22,311 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) [2021-12-21 18:14:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2021-12-21 18:14:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-21 18:14:22,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:22,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-21 18:14:22,321 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 18:14:22,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:22,512 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:22,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:22,513 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-21 18:14:22,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:22,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509930672] [2021-12-21 18:14:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:22,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:22,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:22,515 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:22,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 18:14:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:14:22,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:22,567 INFO L387 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 [2021-12-21 18:14:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:22,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:22,575 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:22,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509930672] [2021-12-21 18:14:22,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509930672] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:22,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:22,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:14:22,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44945236] [2021-12-21 18:14:22,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:22,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:22,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:22,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:22,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:22,584 INFO L87 Difference]: Start difference. First operand 94 states and 100 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) [2021-12-21 18:14:22,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:22,707 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2021-12-21 18:14:22,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:22,708 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 [2021-12-21 18:14:22,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:22,709 INFO L225 Difference]: With dead ends: 102 [2021-12-21 18:14:22,709 INFO L226 Difference]: Without dead ends: 102 [2021-12-21 18:14:22,709 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 [2021-12-21 18:14:22,710 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 82 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:22,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 75 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-21 18:14:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2021-12-21 18:14:22,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 52 states have (on average 1.8461538461538463) internal successors, (96), 89 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-12-21 18:14:22,715 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 3 [2021-12-21 18:14:22,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:22,715 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-12-21 18:14:22,715 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) [2021-12-21 18:14:22,715 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-12-21 18:14:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 18:14:22,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:22,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:22,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:22,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:22,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027163, now seen corresponding path program 1 times [2021-12-21 18:14:22,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:22,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035346362] [2021-12-21 18:14:22,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:22,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:22,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:22,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:22,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 18:14:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:22,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:14:22,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:22,978 INFO L387 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 [2021-12-21 18:14:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:22,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:22,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:22,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035346362] [2021-12-21 18:14:22,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035346362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:22,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:22,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:22,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176881196] [2021-12-21 18:14:22,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:22,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:14:22,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:22,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:14:22,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:14:22,996 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:23,147 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2021-12-21 18:14:23,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:14:23,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-21 18:14:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:23,148 INFO L225 Difference]: With dead ends: 88 [2021-12-21 18:14:23,149 INFO L226 Difference]: Without dead ends: 88 [2021-12-21 18:14:23,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:23,149 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 134 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:23,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 50 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:23,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-21 18:14:23,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2021-12-21 18:14:23,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.6346153846153846) internal successors, (85), 78 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:23,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2021-12-21 18:14:23,158 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 7 [2021-12-21 18:14:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:23,158 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2021-12-21 18:14:23,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2021-12-21 18:14:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 18:14:23,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:23,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:23,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:23,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:23,360 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:23,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1803027164, now seen corresponding path program 1 times [2021-12-21 18:14:23,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:23,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893469378] [2021-12-21 18:14:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:23,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:23,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:23,362 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:23,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 18:14:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:23,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 18:14:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:23,415 INFO L387 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 [2021-12-21 18:14:23,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:23,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:23,465 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:23,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893469378] [2021-12-21 18:14:23,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893469378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:23,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:23,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:23,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274549548] [2021-12-21 18:14:23,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:23,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:14:23,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:14:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:14:23,467 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:23,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:23,635 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2021-12-21 18:14:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:14:23,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-12-21 18:14:23,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:23,637 INFO L225 Difference]: With dead ends: 98 [2021-12-21 18:14:23,637 INFO L226 Difference]: Without dead ends: 98 [2021-12-21 18:14:23,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:23,637 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 84 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:23,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 93 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:23,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-21 18:14:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-12-21 18:14:23,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 83 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) [2021-12-21 18:14:23,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2021-12-21 18:14:23,642 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 7 [2021-12-21 18:14:23,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:23,642 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2021-12-21 18:14:23,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:23,642 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2021-12-21 18:14:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 18:14:23,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:23,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:23,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:23,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:23,847 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:23,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash 399103166, now seen corresponding path program 1 times [2021-12-21 18:14:23,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:23,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406257653] [2021-12-21 18:14:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:23,848 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:23,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:23,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:23,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 18:14:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:23,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 18:14:23,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:23,937 INFO L387 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 [2021-12-21 18:14:23,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:23,976 INFO L387 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 [2021-12-21 18:14:24,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:24,041 INFO L387 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 [2021-12-21 18:14:24,075 INFO L387 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 [2021-12-21 18:14:24,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:24,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:24,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406257653] [2021-12-21 18:14:24,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406257653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:24,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:24,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:14:24,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601604992] [2021-12-21 18:14:24,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:24,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:14:24,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:24,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:14:24,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:24,092 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) 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) [2021-12-21 18:14:24,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:24,371 INFO L93 Difference]: Finished difference Result 167 states and 178 transitions. [2021-12-21 18:14:24,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:24,372 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) 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 [2021-12-21 18:14:24,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:24,373 INFO L225 Difference]: With dead ends: 167 [2021-12-21 18:14:24,373 INFO L226 Difference]: Without dead ends: 167 [2021-12-21 18:14:24,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:24,374 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 228 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:24,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 287 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:24,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-12-21 18:14:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 87. [2021-12-21 18:14:24,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 60 states have (on average 1.5666666666666667) internal successors, (94), 86 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:24,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2021-12-21 18:14:24,378 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 11 [2021-12-21 18:14:24,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:24,378 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2021-12-21 18:14:24,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) 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) [2021-12-21 18:14:24,378 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2021-12-21 18:14:24,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 18:14:24,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:24,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:24,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:24,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:24,588 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:24,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash 406735527, now seen corresponding path program 1 times [2021-12-21 18:14:24,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:24,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925702393] [2021-12-21 18:14:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:24,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:24,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:24,589 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:24,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-21 18:14:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-21 18:14:24,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:24,651 INFO L387 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 [2021-12-21 18:14:24,662 INFO L387 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 [2021-12-21 18:14:24,678 INFO L387 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 17 treesize of output 9 [2021-12-21 18:14:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:24,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:24,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:24,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925702393] [2021-12-21 18:14:24,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925702393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:24,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:24,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:24,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912973188] [2021-12-21 18:14:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:24,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:24,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:24,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:24,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:24,694 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-12-21 18:14:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:24,937 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2021-12-21 18:14:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:24,937 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 [2021-12-21 18:14:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:24,938 INFO L225 Difference]: With dead ends: 86 [2021-12-21 18:14:24,938 INFO L226 Difference]: Without dead ends: 86 [2021-12-21 18:14:24,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:24,939 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 58 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:24,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 170 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-21 18:14:24,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-12-21 18:14:24,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.55) internal successors, (93), 85 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) [2021-12-21 18:14:24,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 93 transitions. [2021-12-21 18:14:24,944 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 93 transitions. Word has length 11 [2021-12-21 18:14:24,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:24,944 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 93 transitions. [2021-12-21 18:14:24,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-12-21 18:14:24,944 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 93 transitions. [2021-12-21 18:14:24,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-21 18:14:24,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:24,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:24,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:25,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:25,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash 406735528, now seen corresponding path program 1 times [2021-12-21 18:14:25,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:25,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547270630] [2021-12-21 18:14:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:25,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:25,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:25,152 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:25,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-21 18:14:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:25,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-21 18:14:25,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:25,217 INFO L387 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 [2021-12-21 18:14:25,235 INFO L387 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 [2021-12-21 18:14:25,240 INFO L387 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 [2021-12-21 18:14:25,267 INFO L387 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 17 treesize of output 9 [2021-12-21 18:14:25,271 INFO L387 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 [2021-12-21 18:14:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:25,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:25,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:25,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547270630] [2021-12-21 18:14:25,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547270630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:25,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:25,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:25,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575332727] [2021-12-21 18:14:25,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:25,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:25,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:25,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:25,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:25,297 INFO L87 Difference]: Start difference. First operand 86 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-12-21 18:14:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:25,603 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2021-12-21 18:14:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:14:25,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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 [2021-12-21 18:14:25,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:25,604 INFO L225 Difference]: With dead ends: 82 [2021-12-21 18:14:25,604 INFO L226 Difference]: Without dead ends: 82 [2021-12-21 18:14:25,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:25,605 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 20 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:25,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 225 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:25,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-21 18:14:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2021-12-21 18:14:25,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 77 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:25,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2021-12-21 18:14:25,608 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 11 [2021-12-21 18:14:25,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:25,608 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2021-12-21 18:14:25,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 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) [2021-12-21 18:14:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2021-12-21 18:14:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:14:25,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:25,608 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:25,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:25,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:25,811 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash -512699581, now seen corresponding path program 1 times [2021-12-21 18:14:25,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:25,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51390093] [2021-12-21 18:14:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:25,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:25,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:25,813 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:25,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-21 18:14:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:25,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 18:14:25,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:25,885 INFO L387 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 [2021-12-21 18:14:25,899 INFO L387 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 [2021-12-21 18:14:25,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:25,931 INFO L387 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 [2021-12-21 18:14:25,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:25,979 INFO L387 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 [2021-12-21 18:14:25,996 INFO L387 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 [2021-12-21 18:14:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:26,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:26,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51390093] [2021-12-21 18:14:26,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51390093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:26,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:26,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:14:26,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808593518] [2021-12-21 18:14:26,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:26,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:14:26,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:26,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:14:26,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:26,011 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:26,261 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2021-12-21 18:14:26,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:14:26,261 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-21 18:14:26,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:26,262 INFO L225 Difference]: With dead ends: 128 [2021-12-21 18:14:26,262 INFO L226 Difference]: Without dead ends: 128 [2021-12-21 18:14:26,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:26,262 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 193 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:26,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 143 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:26,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-21 18:14:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 80. [2021-12-21 18:14:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.4915254237288136) internal successors, (88), 79 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2021-12-21 18:14:26,266 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 12 [2021-12-21 18:14:26,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:26,266 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2021-12-21 18:14:26,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2021-12-21 18:14:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-21 18:14:26,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:26,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:26,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:26,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:26,468 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:26,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:26,468 INFO L85 PathProgramCache]: Analyzing trace with hash -512699580, now seen corresponding path program 1 times [2021-12-21 18:14:26,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:26,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2034627575] [2021-12-21 18:14:26,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:26,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:26,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:26,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:26,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-21 18:14:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:26,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 18:14:26,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:26,547 INFO L387 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 [2021-12-21 18:14:26,564 INFO L387 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 [2021-12-21 18:14:26,569 INFO L387 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 [2021-12-21 18:14:26,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:26,598 INFO L387 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 [2021-12-21 18:14:26,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:26,605 INFO L387 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 [2021-12-21 18:14:26,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:26,669 INFO L387 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 [2021-12-21 18:14:26,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:26,675 INFO L387 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 [2021-12-21 18:14:26,687 INFO L387 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 [2021-12-21 18:14:26,689 INFO L387 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 [2021-12-21 18:14:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:26,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:26,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:26,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2034627575] [2021-12-21 18:14:26,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2034627575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:26,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:26,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:14:26,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162080565] [2021-12-21 18:14:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:26,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:14:26,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:14:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:26,721 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:27,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:27,076 INFO L93 Difference]: Finished difference Result 155 states and 166 transitions. [2021-12-21 18:14:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:14:27,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-12-21 18:14:27,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:27,077 INFO L225 Difference]: With dead ends: 155 [2021-12-21 18:14:27,077 INFO L226 Difference]: Without dead ends: 155 [2021-12-21 18:14:27,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:27,078 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 162 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:27,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 226 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 18:14:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-21 18:14:27,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 92. [2021-12-21 18:14:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 91 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 106 transitions. [2021-12-21 18:14:27,081 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 106 transitions. Word has length 12 [2021-12-21 18:14:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:27,081 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 106 transitions. [2021-12-21 18:14:27,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 106 transitions. [2021-12-21 18:14:27,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 18:14:27,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:27,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:27,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:27,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:27,291 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash -929437396, now seen corresponding path program 1 times [2021-12-21 18:14:27,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:27,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010419466] [2021-12-21 18:14:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:27,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:27,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:27,293 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:27,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-21 18:14:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:27,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-21 18:14:27,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:27,389 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-21 18:14:27,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 21 [2021-12-21 18:14:27,396 INFO L387 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 [2021-12-21 18:14:27,419 INFO L387 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 [2021-12-21 18:14:27,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:27,451 INFO L387 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 [2021-12-21 18:14:27,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:27,529 INFO L387 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 [2021-12-21 18:14:27,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:14:27,697 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 18:14:27,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:14:27,835 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:14:27,835 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 13 [2021-12-21 18:14:27,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:27,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:27,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:27,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010419466] [2021-12-21 18:14:27,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010419466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:27,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:27,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:14:27,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531205108] [2021-12-21 18:14:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:27,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 18:14:27,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 18:14:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:27,868 INFO L87 Difference]: Start difference. First operand 92 states and 106 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2021-12-21 18:14:28,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:28,171 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2021-12-21 18:14:28,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:28,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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 [2021-12-21 18:14:28,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:28,172 INFO L225 Difference]: With dead ends: 97 [2021-12-21 18:14:28,172 INFO L226 Difference]: Without dead ends: 97 [2021-12-21 18:14:28,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:14:28,173 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 63 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:28,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 277 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 111 Invalid, 0 Unknown, 150 Unchecked, 0.2s Time] [2021-12-21 18:14:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-21 18:14:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2021-12-21 18:14:28,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 91 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2021-12-21 18:14:28,175 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 15 [2021-12-21 18:14:28,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:28,175 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2021-12-21 18:14:28,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 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) [2021-12-21 18:14:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2021-12-21 18:14:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 18:14:28,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:28,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:28,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:28,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:28,385 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:28,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -929437395, now seen corresponding path program 1 times [2021-12-21 18:14:28,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:28,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282287004] [2021-12-21 18:14:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:28,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:28,387 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:28,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-21 18:14:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:28,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-21 18:14:28,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:28,477 INFO L387 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 [2021-12-21 18:14:28,491 INFO L387 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 [2021-12-21 18:14:28,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:28,511 INFO L387 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 [2021-12-21 18:14:28,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:28,558 INFO L387 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 [2021-12-21 18:14:28,720 INFO L353 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-12-21 18:14:28,720 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 35 [2021-12-21 18:14:28,735 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:14:28,736 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 29 [2021-12-21 18:14:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:28,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:28,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:28,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282287004] [2021-12-21 18:14:28,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282287004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:28,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:28,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:14:28,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179883144] [2021-12-21 18:14:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:28,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:14:28,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:14:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:14:28,787 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2021-12-21 18:14:29,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:29,084 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2021-12-21 18:14:29,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:14:29,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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 [2021-12-21 18:14:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:29,086 INFO L225 Difference]: With dead ends: 96 [2021-12-21 18:14:29,086 INFO L226 Difference]: Without dead ends: 96 [2021-12-21 18:14:29,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:29,086 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 37 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:29,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 276 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 130 Unchecked, 0.3s Time] [2021-12-21 18:14:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-21 18:14:29,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 92. [2021-12-21 18:14:29,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 91 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:29,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2021-12-21 18:14:29,088 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 15 [2021-12-21 18:14:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:29,088 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2021-12-21 18:14:29,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 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) [2021-12-21 18:14:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2021-12-21 18:14:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 18:14:29,089 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:29,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:29,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:29,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:29,296 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:29,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:29,296 INFO L85 PathProgramCache]: Analyzing trace with hash -448678999, now seen corresponding path program 1 times [2021-12-21 18:14:29,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:29,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290926884] [2021-12-21 18:14:29,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:29,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:29,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:29,298 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:29,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-21 18:14:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:29,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 18:14:29,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:29,378 INFO L387 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 [2021-12-21 18:14:29,388 INFO L387 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 [2021-12-21 18:14:29,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:29,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:29,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:29,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290926884] [2021-12-21 18:14:29,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290926884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:29,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:29,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:14:29,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621409037] [2021-12-21 18:14:29,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:29,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:29,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:29,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:29,406 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 6 states, 6 states have (on average 2.5) 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) [2021-12-21 18:14:29,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:29,576 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2021-12-21 18:14:29,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:14:29,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) 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 [2021-12-21 18:14:29,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:29,577 INFO L225 Difference]: With dead ends: 94 [2021-12-21 18:14:29,577 INFO L226 Difference]: Without dead ends: 94 [2021-12-21 18:14:29,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:29,578 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 16 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:29,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:14:29,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-21 18:14:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2021-12-21 18:14:29,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.457142857142857) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:29,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-12-21 18:14:29,580 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 15 [2021-12-21 18:14:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:29,580 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-12-21 18:14:29,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) 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) [2021-12-21 18:14:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-12-21 18:14:29,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 18:14:29,580 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:29,580 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:29,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:29,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:29,787 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:29,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1252196987, now seen corresponding path program 1 times [2021-12-21 18:14:29,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:29,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061837562] [2021-12-21 18:14:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:29,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:29,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:29,789 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:29,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-21 18:14:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:29,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 18:14:29,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:29,881 INFO L387 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 17 treesize of output 9 [2021-12-21 18:14:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:29,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:29,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:29,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061837562] [2021-12-21 18:14:29,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061837562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:29,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:29,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:14:29,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733991701] [2021-12-21 18:14:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:29,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:14:29,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:29,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:14:29,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:29,896 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-12-21 18:14:30,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:30,256 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2021-12-21 18:14:30,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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 [2021-12-21 18:14:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:30,257 INFO L225 Difference]: With dead ends: 127 [2021-12-21 18:14:30,257 INFO L226 Difference]: Without dead ends: 127 [2021-12-21 18:14:30,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:30,257 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 172 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:30,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 162 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 18:14:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-21 18:14:30,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 91. [2021-12-21 18:14:30,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 90 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2021-12-21 18:14:30,259 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 16 [2021-12-21 18:14:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:30,259 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2021-12-21 18:14:30,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-12-21 18:14:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2021-12-21 18:14:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 18:14:30,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:30,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:30,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:30,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:30,461 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:30,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:30,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1252196988, now seen corresponding path program 1 times [2021-12-21 18:14:30,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:30,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326840498] [2021-12-21 18:14:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:30,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:30,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:30,463 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:30,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-21 18:14:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:30,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 18:14:30,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:30,612 INFO L387 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 23 treesize of output 15 [2021-12-21 18:14:30,614 INFO L387 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 34 treesize of output 18 [2021-12-21 18:14:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:30,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:30,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:30,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326840498] [2021-12-21 18:14:30,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326840498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:30,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:30,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 18:14:30,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820381343] [2021-12-21 18:14:30,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:30,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:14:30,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:14:30,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:30,683 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-12-21 18:14:31,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:31,483 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2021-12-21 18:14:31,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:31,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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 [2021-12-21 18:14:31,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:31,485 INFO L225 Difference]: With dead ends: 126 [2021-12-21 18:14:31,485 INFO L226 Difference]: Without dead ends: 126 [2021-12-21 18:14:31,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:14:31,485 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 158 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:31,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 177 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 18:14:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-12-21 18:14:31,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 90. [2021-12-21 18:14:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.4366197183098592) internal successors, (102), 89 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:31,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2021-12-21 18:14:31,487 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 16 [2021-12-21 18:14:31,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:31,487 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2021-12-21 18:14:31,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 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) [2021-12-21 18:14:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2021-12-21 18:14:31,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 18:14:31,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:31,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:31,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:31,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:31,689 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:31,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:31,689 INFO L85 PathProgramCache]: Analyzing trace with hash 770466058, now seen corresponding path program 1 times [2021-12-21 18:14:31,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:31,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486484395] [2021-12-21 18:14:31,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:31,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:31,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:31,696 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:31,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-21 18:14:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:31,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-21 18:14:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:31,785 INFO L387 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 [2021-12-21 18:14:31,788 INFO L387 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 [2021-12-21 18:14:31,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:31,804 INFO L387 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 [2021-12-21 18:14:31,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:31,809 INFO L387 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 [2021-12-21 18:14:31,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:31,865 INFO L387 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 [2021-12-21 18:14:31,869 INFO L387 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 [2021-12-21 18:14:31,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:31,878 INFO L387 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 [2021-12-21 18:14:31,905 INFO L387 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 [2021-12-21 18:14:31,908 INFO L387 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 [2021-12-21 18:14:31,943 INFO L387 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 [2021-12-21 18:14:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:31,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:31,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:31,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486484395] [2021-12-21 18:14:31,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486484395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:31,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:31,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 18:14:31,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877257324] [2021-12-21 18:14:31,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:31,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:14:31,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:14:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:14:31,958 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:32,301 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2021-12-21 18:14:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:14:32,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2021-12-21 18:14:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:32,302 INFO L225 Difference]: With dead ends: 132 [2021-12-21 18:14:32,302 INFO L226 Difference]: Without dead ends: 132 [2021-12-21 18:14:32,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:14:32,302 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 205 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:32,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 344 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 18:14:32,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-12-21 18:14:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 90. [2021-12-21 18:14:32,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.4225352112676057) internal successors, (101), 89 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2021-12-21 18:14:32,308 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 18 [2021-12-21 18:14:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:32,308 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2021-12-21 18:14:32,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2021-12-21 18:14:32,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 18:14:32,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:32,308 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:32,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:32,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:32,509 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:32,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1441667505, now seen corresponding path program 1 times [2021-12-21 18:14:32,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:32,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916024715] [2021-12-21 18:14:32,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:32,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:32,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:32,511 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:32,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-21 18:14:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:32,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 18:14:32,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:32,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:32,590 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:32,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916024715] [2021-12-21 18:14:32,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916024715] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:32,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:32,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:32,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168127139] [2021-12-21 18:14:32,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:32,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:32,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:32,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:32,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:32,592 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:32,599 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2021-12-21 18:14:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:32,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-21 18:14:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:32,600 INFO L225 Difference]: With dead ends: 92 [2021-12-21 18:14:32,600 INFO L226 Difference]: Without dead ends: 92 [2021-12-21 18:14:32,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:32,600 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:32,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 144 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:14:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-21 18:14:32,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-12-21 18:14:32,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 73 states have (on average 1.4109589041095891) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-12-21 18:14:32,603 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 19 [2021-12-21 18:14:32,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:32,603 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-12-21 18:14:32,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,603 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-12-21 18:14:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 18:14:32,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:32,604 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:14:32,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:32,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:32,810 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:32,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:32,810 INFO L85 PathProgramCache]: Analyzing trace with hash -740864340, now seen corresponding path program 1 times [2021-12-21 18:14:32,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:32,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306835599] [2021-12-21 18:14:32,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:32,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:32,812 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:32,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-21 18:14:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:32,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 18:14:32,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:32,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:32,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:32,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306835599] [2021-12-21 18:14:32,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306835599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:32,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:32,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:14:32,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022141746] [2021-12-21 18:14:32,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:32,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:14:32,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:14:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:32,905 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:32,927 INFO L93 Difference]: Finished difference Result 158 states and 173 transitions. [2021-12-21 18:14:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:14:32,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2021-12-21 18:14:32,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:32,928 INFO L225 Difference]: With dead ends: 158 [2021-12-21 18:14:32,929 INFO L226 Difference]: Without dead ends: 158 [2021-12-21 18:14:32,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:14:32,929 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 60 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:32,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 141 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:14:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-21 18:14:32,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 103. [2021-12-21 18:14:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.380952380952381) internal successors, (116), 102 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-12-21 18:14:32,932 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 19 [2021-12-21 18:14:32,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:32,932 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-12-21 18:14:32,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:32,932 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-12-21 18:14:32,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 18:14:32,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:32,933 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] [2021-12-21 18:14:32,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:33,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:33,135 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:33,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:33,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1741972818, now seen corresponding path program 1 times [2021-12-21 18:14:33,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:33,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712478202] [2021-12-21 18:14:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:33,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:33,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:33,137 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:33,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-21 18:14:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:33,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:14:33,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:33,247 INFO L387 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 17 treesize of output 9 [2021-12-21 18:14:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:33,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:33,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712478202] [2021-12-21 18:14:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712478202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:33,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:33,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:14:33,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78554497] [2021-12-21 18:14:33,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:33,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:14:33,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:33,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:14:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:33,261 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:33,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:33,432 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2021-12-21 18:14:33,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:14:33,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-21 18:14:33,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:33,433 INFO L225 Difference]: With dead ends: 102 [2021-12-21 18:14:33,433 INFO L226 Difference]: Without dead ends: 102 [2021-12-21 18:14:33,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:33,433 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 27 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:33,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 149 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-21 18:14:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2021-12-21 18:14:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 101 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2021-12-21 18:14:33,435 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 20 [2021-12-21 18:14:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:33,435 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2021-12-21 18:14:33,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:33,436 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2021-12-21 18:14:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 18:14:33,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:33,436 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] [2021-12-21 18:14:33,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:33,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:33,636 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1741972817, now seen corresponding path program 1 times [2021-12-21 18:14:33,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:33,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839699735] [2021-12-21 18:14:33,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:33,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:33,638 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:33,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-21 18:14:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:33,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 18:14:33,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:33,794 INFO L387 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 23 treesize of output 15 [2021-12-21 18:14:33,796 INFO L387 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 34 treesize of output 18 [2021-12-21 18:14:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:33,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:33,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:33,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839699735] [2021-12-21 18:14:33,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839699735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:33,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:33,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:14:33,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31385143] [2021-12-21 18:14:33,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:33,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:14:33,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:14:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:14:33,823 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:34,149 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-12-21 18:14:34,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 18:14:34,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-21 18:14:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:34,150 INFO L225 Difference]: With dead ends: 101 [2021-12-21 18:14:34,150 INFO L226 Difference]: Without dead ends: 101 [2021-12-21 18:14:34,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:14:34,150 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 24 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:34,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 152 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 18:14:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-21 18:14:34,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-12-21 18:14:34,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 100 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:34,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2021-12-21 18:14:34,152 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 20 [2021-12-21 18:14:34,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:34,152 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2021-12-21 18:14:34,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:34,152 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2021-12-21 18:14:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:14:34,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:34,153 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] [2021-12-21 18:14:34,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:34,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:34,359 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:34,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:34,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1226162375, now seen corresponding path program 1 times [2021-12-21 18:14:34,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:34,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960461115] [2021-12-21 18:14:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:34,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:34,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:34,361 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:34,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-21 18:14:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:34,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:14:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:34,464 INFO L387 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 [2021-12-21 18:14:34,493 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:14:34,493 INFO L387 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 [2021-12-21 18:14:34,516 INFO L387 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 [2021-12-21 18:14:34,590 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:34,591 INFO L387 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 30 treesize of output 28 [2021-12-21 18:14:34,613 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:34,613 INFO L387 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 30 treesize of output 28 [2021-12-21 18:14:34,649 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:34,649 INFO L387 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 27 treesize of output 28 [2021-12-21 18:14:34,671 INFO L387 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 24 treesize of output 12 [2021-12-21 18:14:34,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:34,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:14:34,718 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_479 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_479) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-12-21 18:14:34,766 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_479 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_479) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-12-21 18:14:34,772 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_479 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_479) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv0 32)))) is different from false [2021-12-21 18:14:34,782 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:34,782 INFO L387 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 19 treesize of output 20 [2021-12-21 18:14:34,815 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:34,816 INFO L387 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 33 treesize of output 36 [2021-12-21 18:14:34,819 INFO L387 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 20 treesize of output 18 [2021-12-21 18:14:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-21 18:14:34,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:34,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960461115] [2021-12-21 18:14:34,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960461115] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:14:34,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 18:14:34,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-12-21 18:14:34,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708535335] [2021-12-21 18:14:34,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 18:14:34,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-21 18:14:34,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:34,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-21 18:14:34,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=147, Unknown=3, NotChecked=78, Total=272 [2021-12-21 18:14:34,918 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:35,566 INFO L93 Difference]: Finished difference Result 198 states and 217 transitions. [2021-12-21 18:14:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 18:14:35,566 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 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 21 [2021-12-21 18:14:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:35,568 INFO L225 Difference]: With dead ends: 198 [2021-12-21 18:14:35,568 INFO L226 Difference]: Without dead ends: 198 [2021-12-21 18:14:35,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=290, Unknown=3, NotChecked=114, Total=506 [2021-12-21 18:14:35,568 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 209 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:35,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 509 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 443 Invalid, 0 Unknown, 520 Unchecked, 0.5s Time] [2021-12-21 18:14:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-21 18:14:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 120. [2021-12-21 18:14:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 103 states have (on average 1.3009708737864079) internal successors, (134), 119 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) [2021-12-21 18:14:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2021-12-21 18:14:35,582 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 21 [2021-12-21 18:14:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:35,583 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2021-12-21 18:14:35,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:35,583 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2021-12-21 18:14:35,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:14:35,584 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:35,584 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] [2021-12-21 18:14:35,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:35,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:35,791 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:35,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:35,792 INFO L85 PathProgramCache]: Analyzing trace with hash 960368175, now seen corresponding path program 1 times [2021-12-21 18:14:35,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:35,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303006160] [2021-12-21 18:14:35,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:35,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:35,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:35,793 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:35,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-21 18:14:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:35,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 18:14:35,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:35,907 INFO L387 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 17 treesize of output 9 [2021-12-21 18:14:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:35,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:35,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:35,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303006160] [2021-12-21 18:14:35,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303006160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:35,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:35,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:35,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684696282] [2021-12-21 18:14:35,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:35,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:35,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:35,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:35,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:35,920 INFO L87 Difference]: Start difference. First operand 120 states and 134 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:36,162 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2021-12-21 18:14:36,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 18:14:36,162 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-21 18:14:36,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:36,163 INFO L225 Difference]: With dead ends: 122 [2021-12-21 18:14:36,163 INFO L226 Difference]: Without dead ends: 122 [2021-12-21 18:14:36,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:36,164 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 65 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:36,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 139 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:14:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-21 18:14:36,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-12-21 18:14:36,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 120 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) [2021-12-21 18:14:36,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2021-12-21 18:14:36,168 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 22 [2021-12-21 18:14:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:36,168 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2021-12-21 18:14:36,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:36,168 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2021-12-21 18:14:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:14:36,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:36,168 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] [2021-12-21 18:14:36,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:36,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:36,375 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:36,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash 960368176, now seen corresponding path program 1 times [2021-12-21 18:14:36,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:36,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447858236] [2021-12-21 18:14:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:36,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:36,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:36,377 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:36,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-21 18:14:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:36,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 18:14:36,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:36,533 INFO L387 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 23 treesize of output 15 [2021-12-21 18:14:36,535 INFO L387 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 34 treesize of output 18 [2021-12-21 18:14:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:36,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:14:36,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447858236] [2021-12-21 18:14:36,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447858236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:14:36,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:14:36,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 18:14:36,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565157996] [2021-12-21 18:14:36,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:14:36,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 18:14:36,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:36,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 18:14:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:14:36,599 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:37,195 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2021-12-21 18:14:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 18:14:37,196 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-12-21 18:14:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:37,196 INFO L225 Difference]: With dead ends: 122 [2021-12-21 18:14:37,196 INFO L226 Difference]: Without dead ends: 122 [2021-12-21 18:14:37,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:14:37,197 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 57 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:37,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 151 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 18:14:37,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-21 18:14:37,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2021-12-21 18:14:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 104 states have (on average 1.2980769230769231) internal successors, (135), 120 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 135 transitions. [2021-12-21 18:14:37,199 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 135 transitions. Word has length 22 [2021-12-21 18:14:37,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:37,199 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 135 transitions. [2021-12-21 18:14:37,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 135 transitions. [2021-12-21 18:14:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:14:37,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:37,200 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] [2021-12-21 18:14:37,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-12-21 18:14:37,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:37,407 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:37,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:37,407 INFO L85 PathProgramCache]: Analyzing trace with hash -643667878, now seen corresponding path program 1 times [2021-12-21 18:14:37,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:37,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775881983] [2021-12-21 18:14:37,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:37,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:37,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:37,409 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:37,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-21 18:14:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:37,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-21 18:14:37,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:37,505 INFO L387 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 [2021-12-21 18:14:37,546 INFO L353 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-12-21 18:14:37,546 INFO L387 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 24 [2021-12-21 18:14:37,586 INFO L387 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 [2021-12-21 18:14:37,682 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:37,683 INFO L387 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 [2021-12-21 18:14:37,711 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:37,711 INFO L387 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 [2021-12-21 18:14:37,753 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:37,753 INFO L387 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 [2021-12-21 18:14:37,771 INFO L387 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 [2021-12-21 18:14:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:37,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:14:37,946 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_566 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_566) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) is different from false [2021-12-21 18:14:37,956 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:37,956 INFO L387 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 [2021-12-21 18:14:37,964 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:37,964 INFO L387 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 [2021-12-21 18:14:37,968 INFO L387 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 [2021-12-21 18:14:56,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:56,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:56,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775881983] [2021-12-21 18:14:56,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775881983] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:14:56,734 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 18:14:56,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-12-21 18:14:56,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064638101] [2021-12-21 18:14:56,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 18:14:56,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-21 18:14:56,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:56,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-21 18:14:56,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=262, Unknown=10, NotChecked=34, Total=380 [2021-12-21 18:14:56,736 INFO L87 Difference]: Start difference. First operand 121 states and 135 transitions. Second operand has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:14:57,035 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2021-12-21 18:14:57,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 18:14:57,036 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 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 22 [2021-12-21 18:14:57,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:14:57,036 INFO L225 Difference]: With dead ends: 123 [2021-12-21 18:14:57,037 INFO L226 Difference]: Without dead ends: 123 [2021-12-21 18:14:57,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=123, Invalid=377, Unknown=10, NotChecked=42, Total=552 [2021-12-21 18:14:57,045 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 49 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 283 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:14:57,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 436 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 283 Unchecked, 0.2s Time] [2021-12-21 18:14:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-12-21 18:14:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-12-21 18:14:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 122 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) [2021-12-21 18:14:57,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2021-12-21 18:14:57,048 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 22 [2021-12-21 18:14:57,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:14:57,048 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2021-12-21 18:14:57,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.263157894736842) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:14:57,048 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2021-12-21 18:14:57,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:14:57,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:14:57,049 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] [2021-12-21 18:14:57,056 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-12-21 18:14:57,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:14:57,255 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:14:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:14:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash -643667877, now seen corresponding path program 1 times [2021-12-21 18:14:57,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:14:57,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088142794] [2021-12-21 18:14:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:14:57,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:14:57,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:14:57,257 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:14:57,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-12-21 18:14:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:14:57,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-21 18:14:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:14:57,368 INFO L387 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 [2021-12-21 18:14:57,396 INFO L387 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 [2021-12-21 18:14:57,409 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:14:57,410 INFO L387 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 [2021-12-21 18:14:57,432 INFO L387 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 [2021-12-21 18:14:57,439 INFO L387 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 [2021-12-21 18:14:57,530 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:57,530 INFO L387 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 [2021-12-21 18:14:57,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:14:57,540 INFO L387 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 14 treesize of output 16 [2021-12-21 18:14:57,566 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-21 18:14:57,566 INFO L387 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 [2021-12-21 18:14:57,570 INFO L387 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 [2021-12-21 18:14:57,585 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:57,585 INFO L387 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 [2021-12-21 18:14:57,640 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:14:57,640 INFO L387 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 [2021-12-21 18:14:57,643 INFO L387 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 [2021-12-21 18:14:57,673 INFO L387 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 [2021-12-21 18:14:57,676 INFO L387 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 [2021-12-21 18:14:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:14:57,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:14:57,882 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_618 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_618) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_617 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_618 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_618) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_617) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-21 18:14:57,950 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_618 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_618) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_617 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_618 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_618) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_617) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-12-21 18:14:57,973 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_617 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_618 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_618) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_617) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (forall ((v_ArrVal_618 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_618) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32)))))) is different from false [2021-12-21 18:14:57,993 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:57,993 INFO L387 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 30 [2021-12-21 18:14:58,007 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:58,007 INFO L387 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 44 treesize of output 43 [2021-12-21 18:14:58,015 INFO L387 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 15 treesize of output 11 [2021-12-21 18:14:58,053 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:58,053 INFO L387 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 [2021-12-21 18:14:58,061 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:14:58,061 INFO L387 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 [2021-12-21 18:14:58,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:14:58,068 INFO L387 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 [2021-12-21 18:14:58,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:14:58,074 INFO L387 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 [2021-12-21 18:14:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-21 18:14:58,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:14:58,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088142794] [2021-12-21 18:14:58,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088142794] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:14:58,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 18:14:58,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-12-21 18:14:58,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727537629] [2021-12-21 18:14:58,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 18:14:58,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 18:14:58,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:14:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 18:14:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=201, Unknown=3, NotChecked=90, Total=342 [2021-12-21 18:14:58,189 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:15:00,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:15:00,554 INFO L93 Difference]: Finished difference Result 192 states and 211 transitions. [2021-12-21 18:15:00,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 18:15:00,555 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 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 22 [2021-12-21 18:15:00,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:15:00,555 INFO L225 Difference]: With dead ends: 192 [2021-12-21 18:15:00,555 INFO L226 Difference]: Without dead ends: 192 [2021-12-21 18:15:00,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=616, Unknown=3, NotChecked=162, Total=930 [2021-12-21 18:15:00,556 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 238 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 440 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:15:00,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 506 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 779 Invalid, 0 Unknown, 440 Unchecked, 1.2s Time] [2021-12-21 18:15:00,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-12-21 18:15:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 126. [2021-12-21 18:15:00,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 109 states have (on average 1.311926605504587) internal successors, (143), 125 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:15:00,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 143 transitions. [2021-12-21 18:15:00,558 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 143 transitions. Word has length 22 [2021-12-21 18:15:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:15:00,558 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 143 transitions. [2021-12-21 18:15:00,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:15:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 143 transitions. [2021-12-21 18:15:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-21 18:15:00,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:15:00,559 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] [2021-12-21 18:15:00,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-12-21 18:15:00,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:15:00,766 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:15:00,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:15:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 977716951, now seen corresponding path program 1 times [2021-12-21 18:15:00,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:15:00,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278865033] [2021-12-21 18:15:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:15:00,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:15:00,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:15:00,768 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:15:00,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-12-21 18:15:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:15:00,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-21 18:15:00,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:15:00,882 INFO L387 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 [2021-12-21 18:15:00,893 INFO L387 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 [2021-12-21 18:15:00,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:15:00,911 INFO L387 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 [2021-12-21 18:15:00,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:15:00,969 INFO L387 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 [2021-12-21 18:15:00,975 INFO L387 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 [2021-12-21 18:15:01,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:15:01,111 INFO L387 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 18:15:01,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:15:01,437 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:15:01,437 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 37 [2021-12-21 18:15:01,445 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-21 18:15:01,445 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 36 [2021-12-21 18:15:01,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:15:01,534 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:15:01,534 INFO L387 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 26 treesize of output 13 [2021-12-21 18:15:01,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:15:01,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:15:01,595 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:15:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278865033] [2021-12-21 18:15:01,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278865033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:15:01,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:15:01,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-21 18:15:01,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623103554] [2021-12-21 18:15:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:15:01,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 18:15:01,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:15:01,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 18:15:01,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:15:01,597 INFO L87 Difference]: Start difference. First operand 126 states and 143 transitions. Second operand has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) [2021-12-21 18:15:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:15:04,018 INFO L93 Difference]: Finished difference Result 136 states and 154 transitions. [2021-12-21 18:15:04,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 18:15:04,019 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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 [2021-12-21 18:15:04,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:15:04,019 INFO L225 Difference]: With dead ends: 136 [2021-12-21 18:15:04,019 INFO L226 Difference]: Without dead ends: 136 [2021-12-21 18:15:04,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=57, Invalid=248, Unknown=1, NotChecked=0, Total=306 [2021-12-21 18:15:04,020 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 34 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:15:04,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 369 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 155 Unchecked, 0.2s Time] [2021-12-21 18:15:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-21 18:15:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2021-12-21 18:15:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 115 states have (on average 1.3043478260869565) internal successors, (150), 131 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) [2021-12-21 18:15:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2021-12-21 18:15:04,022 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 23 [2021-12-21 18:15:04,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:15:04,022 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2021-12-21 18:15:04,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 14 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) [2021-12-21 18:15:04,022 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2021-12-21 18:15:04,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 18:15:04,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:15:04,022 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] [2021-12-21 18:15:04,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-12-21 18:15:04,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:15:04,233 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:15:04,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:15:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash -504150028, now seen corresponding path program 1 times [2021-12-21 18:15:04,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:15:04,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278666261] [2021-12-21 18:15:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:15:04,234 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:15:04,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:15:04,235 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:15:04,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-12-21 18:15:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:15:04,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 18:15:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:15:04,411 INFO L387 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 17 [2021-12-21 18:15:04,412 INFO L387 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 21 treesize of output 13 [2021-12-21 18:15:04,444 INFO L387 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 [2021-12-21 18:15:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:15:04,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:15:04,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 18:15:04,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278666261] [2021-12-21 18:15:04,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278666261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:15:04,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:15:04,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 18:15:04,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499072817] [2021-12-21 18:15:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:15:04,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:15:04,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 18:15:04,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:15:04,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:15:04,458 INFO L87 Difference]: Start difference. First operand 132 states and 150 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-12-21 18:15:04,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:15:04,902 INFO L93 Difference]: Finished difference Result 143 states and 161 transitions. [2021-12-21 18:15:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:15:04,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 [2021-12-21 18:15:04,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:15:04,903 INFO L225 Difference]: With dead ends: 143 [2021-12-21 18:15:04,903 INFO L226 Difference]: Without dead ends: 143 [2021-12-21 18:15:04,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:15:04,903 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 29 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:15:04,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 283 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 18:15:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-21 18:15:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-12-21 18:15:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 139 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:15:04,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2021-12-21 18:15:04,905 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 24 [2021-12-21 18:15:04,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:15:04,905 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2021-12-21 18:15:04,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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) [2021-12-21 18:15:04,906 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2021-12-21 18:15:04,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 18:15:04,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:15:04,906 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] [2021-12-21 18:15:04,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-12-21 18:15:05,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 18:15:05,113 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 42 more)] === [2021-12-21 18:15:05,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:15:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1519298741, now seen corresponding path program 1 times [2021-12-21 18:15:05,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 18:15:05,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582244687] [2021-12-21 18:15:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:15:05,113 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 18:15:05,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 18:15:05,114 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 18:15:05,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-12-21 18:15:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:15:05,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-21 18:15:05,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:15:05,239 INFO L353 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-12-21 18:15:05,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 21 [2021-12-21 18:15:05,298 INFO L353 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2021-12-21 18:15:05,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 29 [2021-12-21 18:15:05,330 INFO L387 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 [2021-12-21 18:15:05,338 INFO L387 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 6 treesize of output 5 [2021-12-21 18:15:05,442 INFO L353 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-21 18:15:05,443 INFO L387 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 [2021-12-21 18:15:05,451 INFO L387 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 14 treesize of output 16 [2021-12-21 18:15:05,500 INFO L353 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-12-21 18:15:05,500 INFO L387 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-12-21 18:15:05,508 INFO L387 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 14 treesize of output 16 [2021-12-21 18:15:05,574 INFO L353 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2021-12-21 18:15:05,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 48 [2021-12-21 18:15:05,578 INFO L387 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 26 treesize of output 28 [2021-12-21 18:15:05,606 INFO L387 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 23 treesize of output 15 [2021-12-21 18:15:05,754 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-21 18:15:05,754 INFO L387 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 14 [2021-12-21 18:15:05,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:15:05,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:15:06,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_718 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_718)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)))) (_ bv1 1)))) is different from false [2021-12-21 18:15:06,902 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_718 (_ BitVec 32))) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base| (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem4#1.base|) |c_ULTIMATE.start_main_#t~mem4#1.offset| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem4#1.offset|) v_ArrVal_718)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem4#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))))) is different from false [2021-12-21 18:15:06,925 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_718 (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (select (let ((.cse0 (store |c_#memory_$Pointer$.base| .cse1 (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (store (select |c_#memory_$Pointer$.base| .cse1) .cse2 |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) .cse2) v_ArrVal_718))))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_719) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (_ bv1 1)))) is different from false [2021-12-21 18:15:07,158 INFO L353 Elim1Store]: treesize reduction 63, result has 51.5 percent of original size [2021-12-21 18:15:07,159 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 57479 treesize of output 54685 [2021-12-21 18:15:09,521 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:15:09,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 51462 treesize of output 51316 [2021-12-21 18:15:09,732 INFO L387 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 56881 treesize of output 56373 [2021-12-21 18:15:09,981 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:15:09,982 INFO L387 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 56373 treesize of output 48965 [2021-12-21 18:15:10,205 INFO L387 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 48957 treesize of output 48449