./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ms1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ms1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 10:33:14,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 10:33:14,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 10:33:14,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 10:33:14,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 10:33:14,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 10:33:14,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 10:33:14,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 10:33:14,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 10:33:14,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 10:33:14,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 10:33:14,440 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 10:33:14,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 10:33:14,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 10:33:14,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 10:33:14,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 10:33:14,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 10:33:14,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 10:33:14,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 10:33:14,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 10:33:14,450 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 10:33:14,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 10:33:14,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 10:33:14,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 10:33:14,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 10:33:14,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 10:33:14,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 10:33:14,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 10:33:14,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 10:33:14,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 10:33:14,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 10:33:14,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 10:33:14,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 10:33:14,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 10:33:14,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 10:33:14,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 10:33:14,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 10:33:14,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 10:33:14,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 10:33:14,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 10:33:14,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 10:33:14,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 10:33:14,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 10:33:14,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 10:33:14,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 10:33:14,479 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 10:33:14,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 10:33:14,480 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 10:33:14,480 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 10:33:14,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 10:33:14,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 10:33:14,481 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 10:33:14,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 10:33:14,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 10:33:14,483 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 10:33:14,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 10:33:14,483 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 10:33:14,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 10:33:14,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 10:33:14,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 10:33:14,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 10:33:14,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:33:14,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 10:33:14,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 10:33:14,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 10:33:14,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 10:33:14,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 10:33:14,485 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 10:33:14,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 10:33:14,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 10:33:14,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19b0f8887e7e48eabb6ce59c44b5494c064f6817a5ff1a77078d9e3a8f8600e [2022-07-19 10:33:14,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 10:33:14,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 10:33:14,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 10:33:14,672 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 10:33:14,672 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 10:33:14,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ms1.c [2022-07-19 10:33:14,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278784194/a7454d57e80b435e8cd38041be0c89e9/FLAG875f976e2 [2022-07-19 10:33:15,021 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 10:33:15,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ms1.c [2022-07-19 10:33:15,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278784194/a7454d57e80b435e8cd38041be0c89e9/FLAG875f976e2 [2022-07-19 10:33:15,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/278784194/a7454d57e80b435e8cd38041be0c89e9 [2022-07-19 10:33:15,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 10:33:15,452 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 10:33:15,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 10:33:15,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 10:33:15,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 10:33:15,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f4bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15, skipping insertion in model container [2022-07-19 10:33:15,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 10:33:15,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 10:33:15,609 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/array-fpi/ms1.c[586,599] [2022-07-19 10:33:15,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:33:15,633 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 10:33:15,643 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/array-fpi/ms1.c[586,599] [2022-07-19 10:33:15,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 10:33:15,664 INFO L208 MainTranslator]: Completed translation [2022-07-19 10:33:15,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15 WrapperNode [2022-07-19 10:33:15,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 10:33:15,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 10:33:15,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 10:33:15,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 10:33:15,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,698 INFO L137 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2022-07-19 10:33:15,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 10:33:15,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 10:33:15,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 10:33:15,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 10:33:15,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,727 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 10:33:15,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 10:33:15,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 10:33:15,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 10:33:15,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (1/1) ... [2022-07-19 10:33:15,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 10:33:15,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:15,768 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) [2022-07-19 10:33:15,840 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 [2022-07-19 10:33:15,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 10:33:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 10:33:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 10:33:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 10:33:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 10:33:15,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 10:33:15,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 10:33:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 10:33:15,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 10:33:15,903 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 10:33:15,904 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 10:33:15,995 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 10:33:15,999 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 10:33:15,999 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 10:33:16,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:33:16 BoogieIcfgContainer [2022-07-19 10:33:16,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 10:33:16,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 10:33:16,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 10:33:16,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 10:33:16,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:33:15" (1/3) ... [2022-07-19 10:33:16,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab94ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:33:16, skipping insertion in model container [2022-07-19 10:33:16,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:33:15" (2/3) ... [2022-07-19 10:33:16,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab94ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:33:16, skipping insertion in model container [2022-07-19 10:33:16,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:33:16" (3/3) ... [2022-07-19 10:33:16,016 INFO L111 eAbstractionObserver]: Analyzing ICFG ms1.c [2022-07-19 10:33:16,026 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 10:33:16,026 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 10:33:16,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 10:33:16,078 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@54d16d70, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@745c8f44 [2022-07-19 10:33:16,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 10:33:16,082 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 10:33:16,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:16,086 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:16,087 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 356661439, now seen corresponding path program 1 times [2022-07-19 10:33:16,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:16,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7068102] [2022-07-19 10:33:16,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:16,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:16,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:16,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7068102] [2022-07-19 10:33:16,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7068102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:33:16,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:33:16,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 10:33:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108081098] [2022-07-19 10:33:16,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:33:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 10:33:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:16,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 10:33:16,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:33:16,256 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:16,266 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-07-19 10:33:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 10:33:16,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-19 10:33:16,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:16,271 INFO L225 Difference]: With dead ends: 34 [2022-07-19 10:33:16,272 INFO L226 Difference]: Without dead ends: 15 [2022-07-19 10:33:16,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 10:33:16,281 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:16,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:33:16,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-19 10:33:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-19 10:33:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-07-19 10:33:16,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-07-19 10:33:16,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:16,301 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-07-19 10:33:16,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,301 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-07-19 10:33:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-19 10:33:16,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:16,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:16,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 10:33:16,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:16,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash -452685187, now seen corresponding path program 1 times [2022-07-19 10:33:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:16,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313179785] [2022-07-19 10:33:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:16,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313179785] [2022-07-19 10:33:16,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313179785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:33:16,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:33:16,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:33:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882955303] [2022-07-19 10:33:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:33:16,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:33:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:16,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:33:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:33:16,409 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:16,453 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2022-07-19 10:33:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:33:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-19 10:33:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:16,455 INFO L225 Difference]: With dead ends: 28 [2022-07-19 10:33:16,455 INFO L226 Difference]: Without dead ends: 20 [2022-07-19 10:33:16,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:33:16,457 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:16,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:33:16,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-19 10:33:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-07-19 10:33:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-07-19 10:33:16,465 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2022-07-19 10:33:16,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:16,466 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-07-19 10:33:16,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-07-19 10:33:16,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-19 10:33:16,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:16,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:16,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 10:33:16,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash 623611495, now seen corresponding path program 1 times [2022-07-19 10:33:16,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:16,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56692170] [2022-07-19 10:33:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 10:33:16,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:16,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56692170] [2022-07-19 10:33:16,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56692170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 10:33:16,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 10:33:16,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 10:33:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775742918] [2022-07-19 10:33:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 10:33:16,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 10:33:16,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:16,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 10:33:16,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 10:33:16,547 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-07-19 10:33:16,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:16,574 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-07-19 10:33:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 10:33:16,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-19 10:33:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:16,577 INFO L225 Difference]: With dead ends: 25 [2022-07-19 10:33:16,577 INFO L226 Difference]: Without dead ends: 21 [2022-07-19 10:33:16,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 10:33:16,582 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:16,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 41 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:33:16,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-19 10:33:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-07-19 10:33:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2022-07-19 10:33:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-07-19 10:33:16,590 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2022-07-19 10:33:16,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:16,590 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-07-19 10:33:16,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) [2022-07-19 10:33:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-07-19 10:33:16,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 10:33:16,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:16,592 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:16,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 10:33:16,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:16,593 INFO L85 PathProgramCache]: Analyzing trace with hash -422196611, now seen corresponding path program 1 times [2022-07-19 10:33:16,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:16,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439827724] [2022-07-19 10:33:16,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:16,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:16,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:16,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439827724] [2022-07-19 10:33:16,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439827724] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16885386] [2022-07-19 10:33:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:16,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:16,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:16,698 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) [2022-07-19 10:33:16,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 10:33:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:16,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 10:33:16,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:16,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:16,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16885386] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:33:16,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:33:16,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-19 10:33:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405138227] [2022-07-19 10:33:16,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:33:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 10:33:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 10:33:16,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-19 10:33:16,835 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2022-07-19 10:33:16,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:16,908 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-07-19 10:33:16,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 10:33:16,908 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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 19 [2022-07-19 10:33:16,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:16,909 INFO L225 Difference]: With dead ends: 39 [2022-07-19 10:33:16,909 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 10:33:16,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2022-07-19 10:33:16,910 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:16,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 28 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:33:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 10:33:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2022-07-19 10:33:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-07-19 10:33:16,914 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2022-07-19 10:33:16,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:16,914 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-07-19 10:33:16,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 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) [2022-07-19 10:33:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-07-19 10:33:16,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-19 10:33:16,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:16,915 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:16,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 10:33:17,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:17,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:17,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 692240447, now seen corresponding path program 2 times [2022-07-19 10:33:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:17,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022168547] [2022-07-19 10:33:17,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:17,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:17,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022168547] [2022-07-19 10:33:17,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022168547] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:17,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321200666] [2022-07-19 10:33:17,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 10:33:17,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:17,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:17,424 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) [2022-07-19 10:33:17,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 10:33:17,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 10:33:17,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:33:17,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-19 10:33:17,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:17,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 10:33:17,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:17,605 INFO L390 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 23 treesize of output 22 [2022-07-19 10:33:17,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:17,673 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-19 10:33:17,673 INFO L390 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 1 case distinctions, treesize of input 44 treesize of output 38 [2022-07-19 10:33:17,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:17,849 INFO L356 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2022-07-19 10:33:17,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 28 [2022-07-19 10:33:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:17,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:20,102 INFO L390 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 92 treesize of output 84 [2022-07-19 10:33:20,195 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:20,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321200666] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:33:20,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:33:20,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2022-07-19 10:33:20,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581408303] [2022-07-19 10:33:20,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:33:20,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-19 10:33:20,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-19 10:33:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=724, Unknown=2, NotChecked=0, Total=870 [2022-07-19 10:33:20,198 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:20,754 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2022-07-19 10:33:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 10:33:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-07-19 10:33:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:20,756 INFO L225 Difference]: With dead ends: 58 [2022-07-19 10:33:20,756 INFO L226 Difference]: Without dead ends: 47 [2022-07-19 10:33:20,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=330, Invalid=1474, Unknown=2, NotChecked=0, Total=1806 [2022-07-19 10:33:20,757 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 38 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:20,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 71 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 221 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2022-07-19 10:33:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-19 10:33:20,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-07-19 10:33:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.162162162162162) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-07-19 10:33:20,762 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 21 [2022-07-19 10:33:20,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:20,763 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-07-19 10:33:20,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 30 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-07-19 10:33:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 10:33:20,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:20,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:20,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 10:33:20,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:20,978 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:20,979 INFO L85 PathProgramCache]: Analyzing trace with hash -301520475, now seen corresponding path program 3 times [2022-07-19 10:33:20,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:20,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829905882] [2022-07-19 10:33:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:20,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:21,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:21,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829905882] [2022-07-19 10:33:21,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829905882] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:21,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238556171] [2022-07-19 10:33:21,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 10:33:21,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:21,056 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) [2022-07-19 10:33:21,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 10:33:21,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-19 10:33:21,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:33:21,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 10:33:21,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:21,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:21,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238556171] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:33:21,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:33:21,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-07-19 10:33:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023628439] [2022-07-19 10:33:21,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:33:21,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 10:33:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:21,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 10:33:21,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2022-07-19 10:33:21,199 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) [2022-07-19 10:33:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:21,258 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2022-07-19 10:33:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 10:33:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 24 [2022-07-19 10:33:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:21,259 INFO L225 Difference]: With dead ends: 60 [2022-07-19 10:33:21,259 INFO L226 Difference]: Without dead ends: 43 [2022-07-19 10:33:21,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-07-19 10:33:21,262 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 37 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:21,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 32 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 10:33:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-19 10:33:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2022-07-19 10:33:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-07-19 10:33:21,271 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 24 [2022-07-19 10:33:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:21,271 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-07-19 10:33:21,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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) [2022-07-19 10:33:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-07-19 10:33:21,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 10:33:21,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:21,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:21,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 10:33:21,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:21,504 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:21,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:21,504 INFO L85 PathProgramCache]: Analyzing trace with hash 937529923, now seen corresponding path program 4 times [2022-07-19 10:33:21,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:21,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126556279] [2022-07-19 10:33:21,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:21,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:21,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:21,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126556279] [2022-07-19 10:33:21,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126556279] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:21,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771357463] [2022-07-19 10:33:21,561 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 10:33:21,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:21,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:21,562 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) [2022-07-19 10:33:21,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 10:33:21,600 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 10:33:21,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:33:21,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 10:33:21,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:21,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:21,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771357463] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:33:21,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:33:21,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2022-07-19 10:33:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238230493] [2022-07-19 10:33:21,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:33:21,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 10:33:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 10:33:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-07-19 10:33:21,698 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 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) [2022-07-19 10:33:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:21,857 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-07-19 10:33:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 10:33:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 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 25 [2022-07-19 10:33:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:21,860 INFO L225 Difference]: With dead ends: 59 [2022-07-19 10:33:21,860 INFO L226 Difference]: Without dead ends: 47 [2022-07-19 10:33:21,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2022-07-19 10:33:21,861 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:21,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 48 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:33:21,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-19 10:33:21,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-07-19 10:33:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2022-07-19 10:33:21,871 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 25 [2022-07-19 10:33:21,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:21,871 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2022-07-19 10:33:21,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 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) [2022-07-19 10:33:21,872 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2022-07-19 10:33:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 10:33:21,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:21,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:21,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 10:33:22,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:22,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:22,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:22,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1384678109, now seen corresponding path program 5 times [2022-07-19 10:33:22,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:22,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500768541] [2022-07-19 10:33:22,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:22,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500768541] [2022-07-19 10:33:22,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500768541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290089437] [2022-07-19 10:33:22,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 10:33:22,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:22,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:22,521 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) [2022-07-19 10:33:22,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 10:33:22,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-07-19 10:33:22,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:33:22,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-19 10:33:22,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:22,613 INFO L390 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 10 treesize of output 8 [2022-07-19 10:33:22,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-19 10:33:22,704 INFO L356 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2022-07-19 10:33:22,705 INFO L390 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 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-19 10:33:22,758 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 10:33:22,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 36 [2022-07-19 10:33:22,827 INFO L356 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2022-07-19 10:33:22,828 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 52 [2022-07-19 10:33:22,891 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 10:33:22,891 INFO L390 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 1 case distinctions, treesize of input 53 treesize of output 41 [2022-07-19 10:33:22,945 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 10:33:22,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 34 [2022-07-19 10:33:22,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:22,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:23,887 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))))) 0)) is different from false [2022-07-19 10:33:25,233 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 0 1))))) (let ((.cse1 (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse2)))) 0)) is different from false [2022-07-19 10:33:26,162 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4) (mod 0 1))))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse0 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) 0)) is different from false [2022-07-19 10:33:26,212 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 10:33:26,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53564 treesize of output 49148 [2022-07-19 10:33:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-19 10:33:32,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290089437] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:33:32,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:33:32,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 13] total 36 [2022-07-19 10:33:32,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966815377] [2022-07-19 10:33:32,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:33:32,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 10:33:32,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:32,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 10:33:32,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=919, Unknown=3, NotChecked=192, Total=1260 [2022-07-19 10:33:32,790 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:36,860 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-07-19 10:33:36,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 10:33:36,861 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-19 10:33:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:36,861 INFO L225 Difference]: With dead ends: 51 [2022-07-19 10:33:36,861 INFO L226 Difference]: Without dead ends: 47 [2022-07-19 10:33:36,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=325, Invalid=1940, Unknown=3, NotChecked=282, Total=2550 [2022-07-19 10:33:36,862 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:36,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 103 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 270 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-07-19 10:33:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-19 10:33:36,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2022-07-19 10:33:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.0689655172413792) internal successors, (31), 29 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) [2022-07-19 10:33:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2022-07-19 10:33:36,866 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2022-07-19 10:33:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:36,867 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2022-07-19 10:33:36,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2022-07-19 10:33:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 10:33:36,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:36,868 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:36,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 10:33:37,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:37,079 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash -483356095, now seen corresponding path program 6 times [2022-07-19 10:33:37,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:37,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768032542] [2022-07-19 10:33:37,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:37,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:37,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768032542] [2022-07-19 10:33:37,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768032542] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:37,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110248659] [2022-07-19 10:33:37,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 10:33:37,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:37,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:37,149 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) [2022-07-19 10:33:37,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 10:33:37,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-19 10:33:37,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 10:33:37,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 10:33:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:37,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:37,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110248659] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 10:33:37,325 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 10:33:37,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2022-07-19 10:33:37,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776082444] [2022-07-19 10:33:37,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 10:33:37,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 10:33:37,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 10:33:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 10:33:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-07-19 10:33:37,327 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 10:33:37,432 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2022-07-19 10:33:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 10:33:37,432 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-07-19 10:33:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 10:33:37,433 INFO L225 Difference]: With dead ends: 53 [2022-07-19 10:33:37,433 INFO L226 Difference]: Without dead ends: 35 [2022-07-19 10:33:37,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-07-19 10:33:37,433 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 10:33:37,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 47 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 10:33:37,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-19 10:33:37,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-07-19 10:33:37,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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) [2022-07-19 10:33:37,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-07-19 10:33:37,440 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 29 [2022-07-19 10:33:37,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 10:33:37,441 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-07-19 10:33:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 10:33:37,441 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-07-19 10:33:37,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-19 10:33:37,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 10:33:37,443 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 10:33:37,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-19 10:33:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:37,652 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 10:33:37,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 10:33:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1023492733, now seen corresponding path program 7 times [2022-07-19 10:33:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 10:33:37,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820601945] [2022-07-19 10:33:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 10:33:37,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 10:33:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:38,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 10:33:38,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820601945] [2022-07-19 10:33:38,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820601945] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 10:33:38,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619700728] [2022-07-19 10:33:38,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-19 10:33:38,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 10:33:38,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 10:33:38,299 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) [2022-07-19 10:33:38,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 10:33:38,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 10:33:38,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 57 conjunts are in the unsatisfiable core [2022-07-19 10:33:38,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 10:33:38,351 INFO L390 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 10 treesize of output 8 [2022-07-19 10:33:38,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-07-19 10:33:38,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,395 INFO L390 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 32 treesize of output 27 [2022-07-19 10:33:38,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,444 INFO L390 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 44 treesize of output 42 [2022-07-19 10:33:38,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,585 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 52 [2022-07-19 10:33:38,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:33:38,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,704 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 61 [2022-07-19 10:33:38,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,849 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:33:38,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 56 [2022-07-19 10:33:38,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 10:33:38,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:38,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2022-07-19 10:33:39,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:39,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:39,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 10:33:39,029 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 40 [2022-07-19 10:33:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 10:33:39,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 10:33:40,170 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse3 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse3 |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| .cse2)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse3 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse3 12 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse2)))) 0)) is different from false [2022-07-19 10:33:41,010 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse0 .cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|)))))) 0)) is different from false [2022-07-19 10:33:42,558 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|) (mod 0 1))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| .cse1)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|))))))) 0)) is different from false [2022-07-19 10:34:10,535 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (= (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse5 (mod 0 1))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset| 4) .cse5) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse5))))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse0 .cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 12 |c_ULTIMATE.start_main_~a~0#1.offset|))))))) 0)) is different from false [2022-07-19 10:34:10,589 INFO L356 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-07-19 10:34:10,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47031094 treesize of output 45409078