./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.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/list-simple/dll2n_prepend_unequal.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 a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 18:16:36,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 18:16:36,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 18:16:36,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 18:16:36,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 18:16:36,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 18:16:36,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 18:16:36,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 18:16:36,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 18:16:36,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 18:16:36,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 18:16:36,453 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 18:16:36,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 18:16:36,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 18:16:36,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 18:16:36,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 18:16:36,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 18:16:36,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 18:16:36,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 18:16:36,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 18:16:36,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 18:16:36,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 18:16:36,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 18:16:36,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 18:16:36,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 18:16:36,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 18:16:36,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 18:16:36,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 18:16:36,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 18:16:36,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 18:16:36,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 18:16:36,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 18:16:36,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 18:16:36,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 18:16:36,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 18:16:36,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 18:16:36,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 18:16:36,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 18:16:36,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 18:16:36,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 18:16:36,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 18:16:36,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-21 18:16:36,518 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 18:16:36,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 18:16:36,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 18:16:36,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 18:16:36,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 18:16:36,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 18:16:36,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 18:16:36,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 18:16:36,521 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 18:16:36,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 18:16:36,522 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 18:16:36,522 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 18:16:36,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 18:16:36,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 18:16:36,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 18:16:36,523 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-21 18:16:36,523 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-21 18:16:36,524 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-21 18:16:36,524 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 18:16:36,524 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 18:16:36,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 18:16:36,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 18:16:36,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 18:16:36,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 18:16:36,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 18:16:36,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:16:36,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 18:16:36,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 18:16:36,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 18:16:36,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 18:16:36,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 18:16:36,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2021-12-21 18:16:36,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 18:16:36,785 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 18:16:36,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 18:16:36,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 18:16:36,789 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 18:16:36,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-12-21 18:16:36,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2567d670b/180e03a100ed4f2caabb95f8a8966f02/FLAG7905831f8 [2021-12-21 18:16:37,310 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 18:16:37,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-12-21 18:16:37,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2567d670b/180e03a100ed4f2caabb95f8a8966f02/FLAG7905831f8 [2021-12-21 18:16:37,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2567d670b/180e03a100ed4f2caabb95f8a8966f02 [2021-12-21 18:16:37,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 18:16:37,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 18:16:37,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 18:16:37,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 18:16:37,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 18:16:37,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:16:37" (1/1) ... [2021-12-21 18:16:37,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f4eef5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:37, skipping insertion in model container [2021-12-21 18:16:37,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 06:16:37" (1/1) ... [2021-12-21 18:16:37,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 18:16:37,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 18:16:37,966 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/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-12-21 18:16:37,973 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:16:37,986 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 18:16:38,034 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/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-12-21 18:16:38,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 18:16:38,059 INFO L208 MainTranslator]: Completed translation [2021-12-21 18:16:38,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38 WrapperNode [2021-12-21 18:16:38,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 18:16:38,063 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 18:16:38,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 18:16:38,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 18:16:38,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,103 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2021-12-21 18:16:38,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 18:16:38,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 18:16:38,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 18:16:38,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 18:16:38,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 18:16:38,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 18:16:38,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 18:16:38,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 18:16:38,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (1/1) ... [2021-12-21 18:16:38,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 18:16:38,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:38,165 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 18:16:38,166 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 18:16:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-21 18:16:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-21 18:16:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 18:16:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 18:16:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 18:16:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 18:16:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 18:16:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 18:16:38,299 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 18:16:38,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 18:16:38,350 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-21 18:16:38,662 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 18:16:38,669 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 18:16:38,671 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 18:16:38,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:16:38 BoogieIcfgContainer [2021-12-21 18:16:38,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 18:16:38,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 18:16:38,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 18:16:38,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 18:16:38,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 06:16:37" (1/3) ... [2021-12-21 18:16:38,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c77ebf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:16:38, skipping insertion in model container [2021-12-21 18:16:38,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 06:16:38" (2/3) ... [2021-12-21 18:16:38,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c77ebf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 06:16:38, skipping insertion in model container [2021-12-21 18:16:38,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 06:16:38" (3/3) ... [2021-12-21 18:16:38,681 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2021-12-21 18:16:38,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 18:16:38,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2021-12-21 18:16:38,731 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 18:16:38,738 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 18:16:38,738 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-12-21 18:16:38,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 2.074074074074074) internal successors, (112), 100 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 18:16:38,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:38,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 18:16:38,758 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:38,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash 33471376, now seen corresponding path program 1 times [2021-12-21 18:16:38,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890342296] [2021-12-21 18:16:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:38,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:38,934 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 18:16:38,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:38,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890342296] [2021-12-21 18:16:38,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890342296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:38,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:38,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:16:38,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611623532] [2021-12-21 18:16:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:38,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:16:38,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:38,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:16:38,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:16:38,964 INFO L87 Difference]: Start difference. First operand has 102 states, 54 states have (on average 2.074074074074074) internal successors, (112), 100 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 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 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 18:16:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:39,147 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2021-12-21 18:16:39,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:16:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-21 18:16:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:39,158 INFO L225 Difference]: With dead ends: 177 [2021-12-21 18:16:39,158 INFO L226 Difference]: Without dead ends: 170 [2021-12-21 18:16:39,159 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 18:16:39,164 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 93 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:39,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 195 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:39,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-21 18:16:39,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 93. [2021-12-21 18:16:39,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 92 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 18:16:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-12-21 18:16:39,207 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 5 [2021-12-21 18:16:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:39,207 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-12-21 18:16:39,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 18:16:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-12-21 18:16:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-21 18:16:39,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:39,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-21 18:16:39,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 18:16:39,208 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:39,209 INFO L85 PathProgramCache]: Analyzing trace with hash 33471377, now seen corresponding path program 1 times [2021-12-21 18:16:39,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:39,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010643277] [2021-12-21 18:16:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:39,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:39,258 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 18:16:39,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:39,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010643277] [2021-12-21 18:16:39,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010643277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:39,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:39,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:16:39,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697642161] [2021-12-21 18:16:39,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:39,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:16:39,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:16:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:16:39,264 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 18:16:39,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:39,387 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2021-12-21 18:16:39,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:16:39,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-12-21 18:16:39,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:39,389 INFO L225 Difference]: With dead ends: 169 [2021-12-21 18:16:39,390 INFO L226 Difference]: Without dead ends: 169 [2021-12-21 18:16:39,391 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 18:16:39,393 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 91 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:39,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 189 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-21 18:16:39,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 90. [2021-12-21 18:16:39,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.8823529411764706) 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 18:16:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-12-21 18:16:39,405 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 5 [2021-12-21 18:16:39,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:39,406 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-12-21 18:16:39,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 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 18:16:39,406 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-12-21 18:16:39,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-21 18:16:39,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:39,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:39,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 18:16:39,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2100113040, now seen corresponding path program 1 times [2021-12-21 18:16:39,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:39,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134804633] [2021-12-21 18:16:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:39,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:39,460 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 18:16:39,460 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:39,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134804633] [2021-12-21 18:16:39,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134804633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:39,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:39,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:16:39,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563477864] [2021-12-21 18:16:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:39,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:16:39,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:16:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:16:39,464 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 18:16:39,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:39,476 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-12-21 18:16:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:16:39,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 18:16:39,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:39,478 INFO L225 Difference]: With dead ends: 100 [2021-12-21 18:16:39,480 INFO L226 Difference]: Without dead ends: 100 [2021-12-21 18:16:39,480 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 18:16:39,481 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:39,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 186 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-21 18:16:39,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2021-12-21 18:16:39,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 90 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 18:16:39,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2021-12-21 18:16:39,488 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 7 [2021-12-21 18:16:39,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:39,488 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2021-12-21 18:16:39,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 18:16:39,489 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2021-12-21 18:16:39,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 18:16:39,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:39,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:39,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 18:16:39,489 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:39,490 INFO L85 PathProgramCache]: Analyzing trace with hash 638916372, now seen corresponding path program 1 times [2021-12-21 18:16:39,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:39,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333327475] [2021-12-21 18:16:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:39,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:39,556 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 18:16:39,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:39,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333327475] [2021-12-21 18:16:39,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333327475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:39,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:39,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 18:16:39,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78588651] [2021-12-21 18:16:39,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:39,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:16:39,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:39,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:16:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:16:39,559 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 18:16:39,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:39,571 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-12-21 18:16:39,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:16:39,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-12-21 18:16:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:39,583 INFO L225 Difference]: With dead ends: 97 [2021-12-21 18:16:39,584 INFO L226 Difference]: Without dead ends: 97 [2021-12-21 18:16:39,584 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 18:16:39,585 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:39,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:39,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-21 18:16:39,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-12-21 18:16:39,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.7894736842105263) 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 18:16:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-12-21 18:16:39,591 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 9 [2021-12-21 18:16:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:39,592 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-12-21 18:16:39,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 18:16:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-12-21 18:16:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-21 18:16:39,592 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:39,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:39,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 18:16:39,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash -763066913, now seen corresponding path program 1 times [2021-12-21 18:16:39,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:39,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754590543] [2021-12-21 18:16:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:39,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:39,652 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 18:16:39,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754590543] [2021-12-21 18:16:39,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754590543] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:39,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136912677] [2021-12-21 18:16:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:39,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:39,655 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 18:16:39,657 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 18:16:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:39,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 18:16:39,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:39,832 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 18:16:39,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:16:39,867 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 18:16:39,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136912677] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:16:39,867 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:16:39,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-21 18:16:39,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039581224] [2021-12-21 18:16:39,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:16:39,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:16:39,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:39,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:16:39,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:16:39,869 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 18:16:39,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:39,884 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2021-12-21 18:16:39,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:16:39,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 14 [2021-12-21 18:16:39,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:39,885 INFO L225 Difference]: With dead ends: 98 [2021-12-21 18:16:39,885 INFO L226 Difference]: Without dead ends: 98 [2021-12-21 18:16:39,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:16:39,886 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 16 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:39,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 186 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-21 18:16:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-21 18:16:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 97 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 18:16:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2021-12-21 18:16:39,891 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 14 [2021-12-21 18:16:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:39,891 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2021-12-21 18:16:39,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 18:16:39,892 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2021-12-21 18:16:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 18:16:39,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:39,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:39,917 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 18:16:40,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:40,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949021, now seen corresponding path program 1 times [2021-12-21 18:16:40,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:40,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483834610] [2021-12-21 18:16:40,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:40,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:40,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:40,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483834610] [2021-12-21 18:16:40,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483834610] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:40,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998829145] [2021-12-21 18:16:40,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:40,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:40,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:40,251 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 18:16:40,252 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 18:16:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:40,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 18:16:40,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:40,423 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 18:16:40,494 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 18:16:40,494 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 18:16:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:40,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:16:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:40,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998829145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:16:40,693 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:16:40,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2021-12-21 18:16:40,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242647762] [2021-12-21 18:16:40,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:16:40,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 18:16:40,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 18:16:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:16:40,697 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 18:16:40,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:40,766 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-12-21 18:16:40,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:16:40,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 18:16:40,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:40,767 INFO L225 Difference]: With dead ends: 110 [2021-12-21 18:16:40,767 INFO L226 Difference]: Without dead ends: 110 [2021-12-21 18:16:40,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:16:40,769 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 93 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:40,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 154 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2021-12-21 18:16:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-21 18:16:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2021-12-21 18:16:40,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 96 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 18:16:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2021-12-21 18:16:40,774 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 16 [2021-12-21 18:16:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:40,774 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2021-12-21 18:16:40,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 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 18:16:40,775 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2021-12-21 18:16:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 18:16:40,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:40,775 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:40,798 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 18:16:40,995 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,SelfDestructingSolverStorable5 [2021-12-21 18:16:40,995 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:40,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949020, now seen corresponding path program 1 times [2021-12-21 18:16:40,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:40,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384787165] [2021-12-21 18:16:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:40,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:41,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:41,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384787165] [2021-12-21 18:16:41,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384787165] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:41,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682607375] [2021-12-21 18:16:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:41,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:41,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:41,118 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 18:16:41,119 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 18:16:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:41,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 18:16:41,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:41,264 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 18:16:41,268 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 18:16:41,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:41,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 18:16:41,342 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 18:16:41,342 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 18:16:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:41,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:16:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:41,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682607375] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:16:41,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:16:41,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-21 18:16:41,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710856086] [2021-12-21 18:16:41,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:16:41,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 18:16:41,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:41,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 18:16:41,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:16:41,600 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 18:16:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:41,727 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-12-21 18:16:41,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:16:41,728 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 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 18:16:41,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:41,728 INFO L225 Difference]: With dead ends: 108 [2021-12-21 18:16:41,728 INFO L226 Difference]: Without dead ends: 108 [2021-12-21 18:16:41,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:16:41,729 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 201 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:41,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 70 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 117 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2021-12-21 18:16:41,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-21 18:16:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-12-21 18:16:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.728813559322034) 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 18:16:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-12-21 18:16:41,734 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 16 [2021-12-21 18:16:41,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:41,735 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-12-21 18:16:41,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 18:16:41,735 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-12-21 18:16:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:16:41,735 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:41,736 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:41,763 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 18:16:41,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:41,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957328, now seen corresponding path program 2 times [2021-12-21 18:16:41,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:41,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290800310] [2021-12-21 18:16:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:41,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:42,011 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:42,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290800310] [2021-12-21 18:16:42,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290800310] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:42,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979846343] [2021-12-21 18:16:42,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 18:16:42,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:42,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:42,013 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 18:16:42,013 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 18:16:42,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 18:16:42,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 18:16:42,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 18:16:42,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:42,112 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 18:16:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:42,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:16:42,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979846343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:42,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 18:16:42,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-12-21 18:16:42,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860688073] [2021-12-21 18:16:42,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:42,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:16:42,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:42,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:16:42,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:16:42,120 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 18:16:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:42,165 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-12-21 18:16:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:16:42,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 18:16:42,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:42,166 INFO L225 Difference]: With dead ends: 105 [2021-12-21 18:16:42,166 INFO L226 Difference]: Without dead ends: 105 [2021-12-21 18:16:42,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:16:42,167 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 73 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:42,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 68 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-21 18:16:42,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2021-12-21 18:16:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.6779661016949152) internal successors, (99), 92 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 18:16:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-12-21 18:16:42,171 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 21 [2021-12-21 18:16:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:42,172 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-12-21 18:16:42,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 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 18:16:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-12-21 18:16:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-21 18:16:42,172 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:42,173 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:42,198 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 18:16:42,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:42,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:42,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:42,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957327, now seen corresponding path program 1 times [2021-12-21 18:16:42,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:42,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546932330] [2021-12-21 18:16:42,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:42,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:42,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:42,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:42,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546932330] [2021-12-21 18:16:42,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546932330] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:42,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152145859] [2021-12-21 18:16:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:42,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:42,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:42,458 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:16:42,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 18:16:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:42,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 18:16:42,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:42,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:16:42,618 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:42,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152145859] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:16:42,619 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:16:42,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-12-21 18:16:42,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528974677] [2021-12-21 18:16:42,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:16:42,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:16:42,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:16:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 18:16:42,621 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 18:16:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:42,644 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2021-12-21 18:16:42,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 18:16:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 18:16:42,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:42,646 INFO L225 Difference]: With dead ends: 93 [2021-12-21 18:16:42,646 INFO L226 Difference]: Without dead ends: 93 [2021-12-21 18:16:42,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 18:16:42,648 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 165 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:42,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 87 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:42,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-21 18:16:42,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-12-21 18:16:42,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 92 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 18:16:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2021-12-21 18:16:42,660 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 21 [2021-12-21 18:16:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:42,660 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2021-12-21 18:16:42,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 18:16:42,660 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2021-12-21 18:16:42,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 18:16:42,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:42,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:42,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 18:16:42,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:42,886 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash 2020822092, now seen corresponding path program 1 times [2021-12-21 18:16:42,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:42,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376429933] [2021-12-21 18:16:42,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:42,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:42,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:42,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376429933] [2021-12-21 18:16:42,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376429933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:42,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:42,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 18:16:42,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68593582] [2021-12-21 18:16:42,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:42,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 18:16:42,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:42,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 18:16:42,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 18:16:42,934 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 18:16:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:42,975 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2021-12-21 18:16:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 18:16:42,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 22 [2021-12-21 18:16:42,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:42,977 INFO L225 Difference]: With dead ends: 90 [2021-12-21 18:16:42,977 INFO L226 Difference]: Without dead ends: 90 [2021-12-21 18:16:42,977 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 18:16:42,978 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 73 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:42,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 63 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-21 18:16:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-12-21 18:16:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.6101694915254237) internal successors, (95), 89 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:42,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-12-21 18:16:42,982 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 22 [2021-12-21 18:16:42,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:42,983 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-12-21 18:16:42,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 18:16:42,984 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-12-21 18:16:42,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 18:16:42,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:42,985 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:42,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 18:16:42,985 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:42,986 INFO L85 PathProgramCache]: Analyzing trace with hash 157247510, now seen corresponding path program 1 times [2021-12-21 18:16:42,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:42,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90637505] [2021-12-21 18:16:42,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:42,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:16:43,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90637505] [2021-12-21 18:16:43,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90637505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:43,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923989662] [2021-12-21 18:16:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:43,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:43,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:16:43,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 18:16:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:43,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-21 18:16:43,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:43,251 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 18:16:43,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:43,263 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 18:16:43,285 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:16:43,285 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 14 [2021-12-21 18:16:43,320 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:16:43,321 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 14 [2021-12-21 18:16:43,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 18:16:43,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:16:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 18:16:43,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923989662] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 18:16:43,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 18:16:43,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 8 [2021-12-21 18:16:43,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736791858] [2021-12-21 18:16:43,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 18:16:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:16:43,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:43,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:16:43,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:16:43,440 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 18:16:43,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:43,516 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-12-21 18:16:43,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:16:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 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 27 [2021-12-21 18:16:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:43,518 INFO L225 Difference]: With dead ends: 96 [2021-12-21 18:16:43,518 INFO L226 Difference]: Without dead ends: 96 [2021-12-21 18:16:43,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:16:43,519 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 342 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:43,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [342 Valid, 74 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2021-12-21 18:16:43,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-21 18:16:43,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2021-12-21 18:16:43,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 83 states have internal predecessors, (89), 0 states have call successors, (0), 0 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 18:16:43,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-12-21 18:16:43,522 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2021-12-21 18:16:43,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:43,522 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-12-21 18:16:43,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.25) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 18:16:43,522 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-12-21 18:16:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-21 18:16:43,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:43,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:43,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 18:16:43,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:43,749 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:43,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:43,750 INFO L85 PathProgramCache]: Analyzing trace with hash 157247511, now seen corresponding path program 1 times [2021-12-21 18:16:43,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:43,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402501013] [2021-12-21 18:16:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:43,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:43,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 18:16:43,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:43,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402501013] [2021-12-21 18:16:43,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402501013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:43,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452358594] [2021-12-21 18:16:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:43,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:43,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:43,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:16:43,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 18:16:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:44,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-21 18:16:44,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:44,038 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 18:16:44,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:44,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 18:16:44,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:44,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 18:16:44,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:44,184 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 18:16:44,210 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:44,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 18:16:44,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452358594] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:44,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 18:16:44,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2021-12-21 18:16:44,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411838213] [2021-12-21 18:16:44,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:44,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 18:16:44,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:44,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 18:16:44,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 18:16:44,212 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 18:16:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:44,260 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2021-12-21 18:16:44,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:16:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 27 [2021-12-21 18:16:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:44,261 INFO L225 Difference]: With dead ends: 78 [2021-12-21 18:16:44,261 INFO L226 Difference]: Without dead ends: 78 [2021-12-21 18:16:44,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 18:16:44,262 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 115 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:44,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 51 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:44,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-21 18:16:44,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-21 18:16:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 77 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 18:16:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-12-21 18:16:44,265 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 27 [2021-12-21 18:16:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:44,265 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-12-21 18:16:44,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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 18:16:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-12-21 18:16:44,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 18:16:44,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:44,266 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:44,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 18:16:44,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:44,484 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash 579705555, now seen corresponding path program 1 times [2021-12-21 18:16:44,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:44,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098326694] [2021-12-21 18:16:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:44,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:44,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:44,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098326694] [2021-12-21 18:16:44,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098326694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:44,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:44,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:16:44,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619336957] [2021-12-21 18:16:44,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:44,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:16:44,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:44,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:16:44,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:16:44,540 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 18:16:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:44,608 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2021-12-21 18:16:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:16:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 28 [2021-12-21 18:16:44,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:44,610 INFO L225 Difference]: With dead ends: 89 [2021-12-21 18:16:44,610 INFO L226 Difference]: Without dead ends: 89 [2021-12-21 18:16:44,611 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 18:16:44,612 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 159 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:44,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 88 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-21 18:16:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2021-12-21 18:16:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 76 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-12-21 18:16:44,614 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 28 [2021-12-21 18:16:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:44,615 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-12-21 18:16:44,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 18:16:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-12-21 18:16:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-21 18:16:44,617 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:44,617 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:44,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 18:16:44,618 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:44,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 579705556, now seen corresponding path program 1 times [2021-12-21 18:16:44,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:44,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208837087] [2021-12-21 18:16:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:44,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:44,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:44,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208837087] [2021-12-21 18:16:44,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208837087] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:44,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:44,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 18:16:44,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657037365] [2021-12-21 18:16:44,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:44,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 18:16:44,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:44,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 18:16:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 18:16:44,685 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 18:16:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:44,751 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-12-21 18:16:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 18:16:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 28 [2021-12-21 18:16:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:44,752 INFO L225 Difference]: With dead ends: 76 [2021-12-21 18:16:44,752 INFO L226 Difference]: Without dead ends: 76 [2021-12-21 18:16:44,752 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 18:16:44,753 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 164 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:44,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 67 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 18:16:44,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-21 18:16:44,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-12-21 18:16:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 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 18:16:44,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-12-21 18:16:44,755 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 28 [2021-12-21 18:16:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:44,755 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-12-21 18:16:44,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 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 18:16:44,755 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-12-21 18:16:44,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 18:16:44,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:44,757 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:44,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 18:16:44,758 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:44,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558015, now seen corresponding path program 1 times [2021-12-21 18:16:44,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:44,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040927659] [2021-12-21 18:16:44,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:44,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 18:16:44,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:44,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040927659] [2021-12-21 18:16:44,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040927659] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:44,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 18:16:44,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188469882] [2021-12-21 18:16:44,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:44,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-21 18:16:44,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-21 18:16:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-21 18:16:44,944 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:45,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:45,235 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2021-12-21 18:16:45,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:16:45,235 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-21 18:16:45,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:45,236 INFO L225 Difference]: With dead ends: 88 [2021-12-21 18:16:45,236 INFO L226 Difference]: Without dead ends: 88 [2021-12-21 18:16:45,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-12-21 18:16:45,237 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 203 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:45,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 218 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:16:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-21 18:16:45,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2021-12-21 18:16:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 74 states have internal predecessors, (80), 0 states have call successors, (0), 0 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 18:16:45,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-12-21 18:16:45,239 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 33 [2021-12-21 18:16:45,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:45,239 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-12-21 18:16:45,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:45,239 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-12-21 18:16:45,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-21 18:16:45,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:45,240 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:45,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 18:16:45,240 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558014, now seen corresponding path program 1 times [2021-12-21 18:16:45,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:45,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010200487] [2021-12-21 18:16:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:45,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:16:45,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:45,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010200487] [2021-12-21 18:16:45,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010200487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:45,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:45,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 18:16:45,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249924722] [2021-12-21 18:16:45,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:45,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 18:16:45,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:45,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 18:16:45,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-21 18:16:45,425 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:45,683 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-12-21 18:16:45,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 18:16:45,683 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-21 18:16:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:45,684 INFO L225 Difference]: With dead ends: 75 [2021-12-21 18:16:45,684 INFO L226 Difference]: Without dead ends: 75 [2021-12-21 18:16:45,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-12-21 18:16:45,684 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 191 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:45,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 101 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-21 18:16:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-12-21 18:16:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 73 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-12-21 18:16:45,686 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 33 [2021-12-21 18:16:45,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:45,686 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-12-21 18:16:45,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:45,686 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-12-21 18:16:45,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 18:16:45,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:45,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:45,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 18:16:45,687 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash 873417592, now seen corresponding path program 1 times [2021-12-21 18:16:45,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:45,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045846866] [2021-12-21 18:16:45,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:45,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:45,791 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:45,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:45,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045846866] [2021-12-21 18:16:45,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045846866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:45,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:45,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 18:16:45,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925753795] [2021-12-21 18:16:45,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:45,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 18:16:45,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:45,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 18:16:45,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 18:16:45,794 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 18:16:45,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:45,953 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2021-12-21 18:16:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 18:16:45,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-21 18:16:45,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:45,954 INFO L225 Difference]: With dead ends: 85 [2021-12-21 18:16:45,954 INFO L226 Difference]: Without dead ends: 85 [2021-12-21 18:16:45,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-21 18:16:45,954 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 199 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:45,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 163 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:45,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-21 18:16:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2021-12-21 18:16:45,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-12-21 18:16:45,957 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 36 [2021-12-21 18:16:45,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:45,957 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-12-21 18:16:45,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 18:16:45,957 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-12-21 18:16:45,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-21 18:16:45,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:45,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:45,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 18:16:45,957 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:45,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash 873417593, now seen corresponding path program 1 times [2021-12-21 18:16:45,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:45,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424506688] [2021-12-21 18:16:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:45,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:46,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 18:16:46,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:46,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424506688] [2021-12-21 18:16:46,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424506688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:46,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:46,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 18:16:46,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643348308] [2021-12-21 18:16:46,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:46,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 18:16:46,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:46,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 18:16:46,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 18:16:46,079 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 18:16:46,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:46,254 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-12-21 18:16:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 18:16:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-21 18:16:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:46,255 INFO L225 Difference]: With dead ends: 71 [2021-12-21 18:16:46,255 INFO L226 Difference]: Without dead ends: 71 [2021-12-21 18:16:46,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-21 18:16:46,256 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 172 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:46,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-21 18:16:46,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-12-21 18:16:46,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 68 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 18:16:46,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2021-12-21 18:16:46,258 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 36 [2021-12-21 18:16:46,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:46,258 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2021-12-21 18:16:46,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 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 18:16:46,258 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2021-12-21 18:16:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-21 18:16:46,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:46,258 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:46,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 18:16:46,258 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:46,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1835685655, now seen corresponding path program 1 times [2021-12-21 18:16:46,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:46,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242485962] [2021-12-21 18:16:46,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:46,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:16:46,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242485962] [2021-12-21 18:16:46,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242485962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:46,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:46,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 18:16:46,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424691574] [2021-12-21 18:16:46,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:46,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 18:16:46,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 18:16:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-21 18:16:46,434 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 18:16:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:46,673 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-12-21 18:16:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 18:16:46,674 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 38 [2021-12-21 18:16:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:46,674 INFO L225 Difference]: With dead ends: 69 [2021-12-21 18:16:46,674 INFO L226 Difference]: Without dead ends: 69 [2021-12-21 18:16:46,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2021-12-21 18:16:46,675 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 159 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:46,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 181 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 18:16:46,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-21 18:16:46,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-21 18:16:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 68 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-12-21 18:16:46,676 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 38 [2021-12-21 18:16:46,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:46,676 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-12-21 18:16:46,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 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 18:16:46,677 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-12-21 18:16:46,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-21 18:16:46,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:46,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:46,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 18:16:46,677 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1288796870, now seen corresponding path program 1 times [2021-12-21 18:16:46,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:46,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376538473] [2021-12-21 18:16:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:46,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 18:16:47,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:47,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376538473] [2021-12-21 18:16:47,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376538473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:47,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:47,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-21 18:16:47,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395715683] [2021-12-21 18:16:47,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:47,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 18:16:47,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 18:16:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-21 18:16:47,006 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 18:16:47,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:47,694 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-12-21 18:16:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 18:16:47,694 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 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 41 [2021-12-21 18:16:47,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:47,695 INFO L225 Difference]: With dead ends: 81 [2021-12-21 18:16:47,695 INFO L226 Difference]: Without dead ends: 81 [2021-12-21 18:16:47,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-12-21 18:16:47,696 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 249 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:47,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 242 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 18:16:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-21 18:16:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-12-21 18:16:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 68 states have internal predecessors, (72), 0 states have call successors, (0), 0 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 18:16:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-12-21 18:16:47,703 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 41 [2021-12-21 18:16:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:47,703 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-12-21 18:16:47,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 18:16:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-12-21 18:16:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-21 18:16:47,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:47,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:47,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 18:16:47,704 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:47,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:47,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1835035530, now seen corresponding path program 1 times [2021-12-21 18:16:47,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:47,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908694882] [2021-12-21 18:16:47,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:47,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:48,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 18:16:48,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:48,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908694882] [2021-12-21 18:16:48,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908694882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:48,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:48,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-21 18:16:48,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642574498] [2021-12-21 18:16:48,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:48,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-21 18:16:48,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-21 18:16:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-21 18:16:48,099 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 18:16:48,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:48,952 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2021-12-21 18:16:48,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 18:16:48,952 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-21 18:16:48,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:48,953 INFO L225 Difference]: With dead ends: 101 [2021-12-21 18:16:48,953 INFO L226 Difference]: Without dead ends: 101 [2021-12-21 18:16:48,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-12-21 18:16:48,954 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 351 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:48,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 261 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 18:16:48,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-21 18:16:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2021-12-21 18:16:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:48,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-12-21 18:16:48,956 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 44 [2021-12-21 18:16:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:48,956 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-12-21 18:16:48,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 18:16:48,956 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-12-21 18:16:48,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-21 18:16:48,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:48,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:48,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 18:16:48,957 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:48,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1835035531, now seen corresponding path program 1 times [2021-12-21 18:16:48,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:48,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747752480] [2021-12-21 18:16:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:48,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:16:49,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:49,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747752480] [2021-12-21 18:16:49,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747752480] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:49,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:49,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-21 18:16:49,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518926834] [2021-12-21 18:16:49,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:49,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 18:16:49,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 18:16:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-21 18:16:49,517 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:50,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:50,925 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2021-12-21 18:16:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-21 18:16:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-21 18:16:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:50,928 INFO L225 Difference]: With dead ends: 117 [2021-12-21 18:16:50,928 INFO L226 Difference]: Without dead ends: 117 [2021-12-21 18:16:50,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2021-12-21 18:16:50,929 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 600 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:50,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 236 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 18:16:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-21 18:16:50,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2021-12-21 18:16:50,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 72 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:16:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-12-21 18:16:50,931 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 44 [2021-12-21 18:16:50,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:50,932 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-12-21 18:16:50,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:50,932 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-12-21 18:16:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 18:16:50,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:50,933 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:50,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 18:16:50,933 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:50,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:50,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1051525325, now seen corresponding path program 1 times [2021-12-21 18:16:50,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:50,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610191893] [2021-12-21 18:16:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:50,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:51,327 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 18:16:51,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:51,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610191893] [2021-12-21 18:16:51,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610191893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 18:16:51,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 18:16:51,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 18:16:51,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435202580] [2021-12-21 18:16:51,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 18:16:51,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 18:16:51,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:51,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 18:16:51,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-21 18:16:51,329 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 18:16:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:52,334 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-12-21 18:16:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 18:16:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2021-12-21 18:16:52,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:52,335 INFO L225 Difference]: With dead ends: 88 [2021-12-21 18:16:52,335 INFO L226 Difference]: Without dead ends: 88 [2021-12-21 18:16:52,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=271, Invalid=989, Unknown=0, NotChecked=0, Total=1260 [2021-12-21 18:16:52,336 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 365 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:52,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 285 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 18:16:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-21 18:16:52,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2021-12-21 18:16:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 72 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 18:16:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-12-21 18:16:52,337 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 45 [2021-12-21 18:16:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:52,338 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-12-21 18:16:52,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 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 18:16:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-12-21 18:16:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-21 18:16:52,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:52,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:52,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-21 18:16:52,338 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1460157775, now seen corresponding path program 1 times [2021-12-21 18:16:52,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:52,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839392918] [2021-12-21 18:16:52,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:52,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:53,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:53,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839392918] [2021-12-21 18:16:53,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839392918] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:53,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612557017] [2021-12-21 18:16:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:53,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:53,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:53,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:16:53,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 18:16:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:53,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 123 conjunts are in the unsatisfiable core [2021-12-21 18:16:53,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:53,342 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 18:16:53,395 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:16:53,398 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 14 [2021-12-21 18:16:53,594 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-21 18:16:53,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-21 18:16:53,706 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 18:16:53,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:53,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 18:16:53,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:53,820 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 18:16:53,880 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 14 treesize of output 16 [2021-12-21 18:16:54,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,108 INFO L353 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-21 18:16:54,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2021-12-21 18:16:54,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,204 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 34 treesize of output 32 [2021-12-21 18:16:54,208 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 18 treesize of output 20 [2021-12-21 18:16:54,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,224 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 14 treesize of output 16 [2021-12-21 18:16:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,253 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 34 treesize of output 32 [2021-12-21 18:16:54,256 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 18 treesize of output 20 [2021-12-21 18:16:54,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,270 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 14 treesize of output 16 [2021-12-21 18:16:54,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,301 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 18:16:54,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,307 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 34 treesize of output 32 [2021-12-21 18:16:54,311 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 18 treesize of output 20 [2021-12-21 18:16:54,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,558 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-12-21 18:16:54,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-12-21 18:16:54,579 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 20 treesize of output 22 [2021-12-21 18:16:54,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,871 INFO L353 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-21 18:16:54,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 82 [2021-12-21 18:16:54,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-21 18:16:54,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,890 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-21 18:16:54,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2021-12-21 18:16:54,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,977 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 0 case distinctions, treesize of input 58 treesize of output 35 [2021-12-21 18:16:54,982 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 24 treesize of output 26 [2021-12-21 18:16:54,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:54,989 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 0 case distinctions, treesize of input 32 treesize of output 27 [2021-12-21 18:16:55,280 INFO L353 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-12-21 18:16:55,280 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 122 treesize of output 53 [2021-12-21 18:16:55,284 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Unexpected substitution problem. [2021-12-21 18:16:55,284 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-21 18:16:55,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-12-21 18:16:55,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404852163] [2021-12-21 18:16:55,284 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-21 18:16:55,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 18:16:55,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 18:16:55,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 18:16:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1450, Unknown=0, NotChecked=0, Total=1560 [2021-12-21 18:16:55,285 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 18:16:56,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 18:16:56,806 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2021-12-21 18:16:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-21 18:16:56,806 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-21 18:16:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 18:16:56,807 INFO L225 Difference]: With dead ends: 93 [2021-12-21 18:16:56,807 INFO L226 Difference]: Without dead ends: 93 [2021-12-21 18:16:56,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=348, Invalid=3434, Unknown=0, NotChecked=0, Total=3782 [2021-12-21 18:16:56,808 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 247 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 887 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 18:16:56,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 331 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 887 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 18:16:56,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-21 18:16:56,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-12-21 18:16:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.203125) internal successors, (77), 73 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 18:16:56,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-12-21 18:16:56,815 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 48 [2021-12-21 18:16:56,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 18:16:56,816 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-12-21 18:16:56,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 0 states have call successors, (0), 0 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 18:16:56,816 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-12-21 18:16:56,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 18:16:56,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 18:16:56,816 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 18:16:56,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 18:16:57,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-21 18:16:57,017 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-21 18:16:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 18:16:57,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1979749756, now seen corresponding path program 1 times [2021-12-21 18:16:57,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 18:16:57,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345403396] [2021-12-21 18:16:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:57,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 18:16:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:16:57,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 18:16:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345403396] [2021-12-21 18:16:57,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345403396] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 18:16:57,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144749390] [2021-12-21 18:16:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 18:16:57,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 18:16:57,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 18:16:57,862 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 18:16:57,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 18:16:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 18:16:58,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-21 18:16:58,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 18:16:58,043 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 18:16:58,081 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:16:58,083 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 14 [2021-12-21 18:16:58,211 INFO L353 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-21 18:16:58,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-21 18:16:58,353 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 13 treesize of output 9 [2021-12-21 18:16:58,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-21 18:16:58,475 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 18:16:58,475 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-21 18:16:58,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,710 INFO L353 Elim1Store]: treesize reduction 88, result has 32.8 percent of original size [2021-12-21 18:16:58,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 65 [2021-12-21 18:16:58,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,828 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 18:16:58,828 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 61 [2021-12-21 18:16:58,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 18:16:58,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,879 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 18:16:58,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,894 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 18:16:58,894 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 61 [2021-12-21 18:16:58,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,939 INFO L353 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-21 18:16:58,940 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 61 [2021-12-21 18:16:58,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:58,955 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 18:16:59,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,231 INFO L353 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-21 18:16:59,231 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 53 [2021-12-21 18:16:59,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,258 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-12-21 18:16:59,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,595 INFO L353 Elim1Store]: treesize reduction 49, result has 15.5 percent of original size [2021-12-21 18:16:59,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 125 treesize of output 74 [2021-12-21 18:16:59,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,602 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-21 18:16:59,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,690 INFO L353 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-21 18:16:59,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 56 [2021-12-21 18:16:59,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:16:59,698 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 0 case distinctions, treesize of input 32 treesize of output 27 [2021-12-21 18:17:00,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 18:17:00,124 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 141 [2021-12-21 18:17:00,396 INFO L353 Elim1Store]: treesize reduction 55, result has 12.7 percent of original size [2021-12-21 18:17:00,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 129 treesize of output 49 [2021-12-21 18:17:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 18:17:00,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 18:17:01,452 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2028 Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse3 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_2027))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse0 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base|) (+ |c_ULTIMATE.start_dll_prepend_#t~mem10#1.offset| 8) v_ArrVal_2028)))) (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ 4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (or (= (select |c_#valid| (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (< (select (select .cse3 .cse1) .cse2) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|))))) is different from false [2021-12-21 18:17:01,525 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2028 Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse3 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_2027))) (store .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse0 (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse5 (store (select |c_#memory_$Pointer$.base| .cse5) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8) v_ArrVal_2028)))) (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (= (select |c_#valid| (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1) (not (<= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10|)) (< (select (select .cse3 .cse1) .cse2) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|)))))) is different from false [2021-12-21 18:17:01,921 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2024 Int) (v_ArrVal_2028 Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse9 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse9 |c_ULTIMATE.start_dll_prepend_#t~mem8#1.base|)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse9 v_ArrVal_2024))) (.cse7 (select (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse4 (let ((.cse8 (store .cse0 .cse7 v_ArrVal_2027))) (store .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse1 (let ((.cse5 (store .cse6 .cse7 (store (select .cse6 .cse7) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8) v_ArrVal_2028)))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (not (<= (select (select .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10|)) (not (<= v_ArrVal_2024 |c_ULTIMATE.start_dll_prepend_#t~mem8#1.offset|)) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (= (select |c_#valid| (select (select .cse1 (select (select .cse1 .cse2) .cse3)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1) (< (select (select .cse4 .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|)))))))) is different from false [2021-12-21 18:17:02,120 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2024 Int) (v_ArrVal_2028 Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse9 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse9 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse9 v_ArrVal_2024))) (.cse7 (select (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse4 (let ((.cse8 (store .cse0 .cse7 v_ArrVal_2027))) (store .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse1 (let ((.cse5 (store .cse6 .cse7 (store (select .cse6 .cse7) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8) v_ArrVal_2028)))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ 4 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (or (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) v_ArrVal_2024) (not (<= (select (select .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10|)) (= (select |c_#valid| (select (select .cse1 (select (select .cse1 .cse2) .cse3)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (< (select (select .cse4 .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|)))))))) is different from false [2021-12-21 18:17:02,324 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2024 Int) (v_ArrVal_2028 Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse9 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base|) .cse9 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base|) .cse9 v_ArrVal_2024))) (.cse7 (select (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse1 (let ((.cse8 (store .cse0 .cse7 v_ArrVal_2027))) (store .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse4 (let ((.cse5 (store .cse6 .cse7 (store (select .cse6 .cse7) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8) v_ArrVal_2028)))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_#res#1.base|))))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (not (<= (select (select .cse0 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10|)) (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) v_ArrVal_2024) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (< (select (select .cse1 .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|) (= (select |c_#valid| (select (select .cse4 (select (select .cse4 .cse2) .cse3)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1)))))))) is different from false [2021-12-21 18:17:02,523 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2024 Int) (v_ArrVal_2028 Int) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse9 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse9 v_ArrVal_2024))) (.cse7 (select (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse3 (let ((.cse8 (store .cse4 .cse7 v_ArrVal_2027))) (store .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse0 (let ((.cse5 (store .cse6 .cse7 (store (select .cse6 .cse7) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8) v_ArrVal_2028)))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ 4 (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (or (< (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) v_ArrVal_2024) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (= (select |c_#valid| (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1) (< (select (select .cse3 .cse1) .cse2) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|) (not (<= (select (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10|))))))))) is different from false [2021-12-21 18:17:02,782 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| Int) (v_ArrVal_2027 (Array Int Int)) (v_ArrVal_2024 Int) (v_ArrVal_2022 (Array Int Int)) (v_ArrVal_2028 Int) (v_ArrVal_2021 (Array Int Int)) (|ULTIMATE.start_dll_prepend_~new_head~1#1.offset| Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_18| Int)) (let ((.cse9 (+ |ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_2022 .cse9 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2022) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_2021 .cse9 v_ArrVal_2024))) (.cse7 (select (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse0 (let ((.cse8 (store .cse3 .cse7 v_ArrVal_2027))) (store .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |ULTIMATE.start_dll_prepend_~new_head~1#1.offset|)))) (.cse4 (let ((.cse5 (store .cse6 .cse7 (store (select .cse6 .cse7) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10| 8) v_ArrVal_2028)))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse1 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (or (< (select (select .cse0 .cse1) .cse2) |v_ULTIMATE.start_main_~ptr~0#1.offset_18|) (< (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_2021) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) v_ArrVal_2024) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 1) 0) (not (<= (select (select .cse3 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|) |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_10|)) (= (select |c_#valid| (select (select .cse4 (select (select .cse4 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_18| 4))) 1)))))))) is different from false [2021-12-21 18:17:03,463 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 2166 treesize of output 2144 [2021-12-21 18:17:03,481 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 2161 treesize of output 2157 [2021-12-21 18:17:03,519 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-21 18:17:03,519 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 1223 treesize of output 1195 [2021-12-21 18:17:03,559 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 2416 treesize of output 2296 [2021-12-21 18:17:19,401 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:19,401 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125 [2021-12-21 18:17:22,277 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:22,277 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125 [2021-12-21 18:17:24,004 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:24,004 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125 [2021-12-21 18:17:27,362 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:27,362 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125 [2021-12-21 18:17:29,272 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:29,272 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125 [2021-12-21 18:17:32,456 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:32,456 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125 [2021-12-21 18:17:34,329 INFO L353 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2021-12-21 18:17:34,329 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 125