./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/pcomp.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/pcomp.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 1472da9c0a8f011e4f758f37d66a1227b497d4a96142a431b3f2f304a275b1b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:11:06,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:11:06,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:11:06,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:11:06,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:11:06,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:11:06,376 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:11:06,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:11:06,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:11:06,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:11:06,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:11:06,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:11:06,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:11:06,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:11:06,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:11:06,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:11:06,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:11:06,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:11:06,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:11:06,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:11:06,400 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:11:06,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:11:06,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:11:06,402 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:11:06,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:11:06,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:11:06,409 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:11:06,409 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:11:06,410 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:11:06,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:11:06,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:11:06,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:11:06,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:11:06,414 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:11:06,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:11:06,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:11:06,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:11:06,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:11:06,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:11:06,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:11:06,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:11:06,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:11:06,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:11:06,440 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:11:06,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:11:06,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:11:06,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:11:06,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:11:06,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:11:06,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:11:06,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:11:06,443 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:11:06,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:11:06,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:11:06,445 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:11:06,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:11:06,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:11:06,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:11:06,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:11:06,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:11:06,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:11:06,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:11:06,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:11:06,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:11:06,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:11:06,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:11:06,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:11:06,447 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:11:06,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:11:06,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:11:06,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1472da9c0a8f011e4f758f37d66a1227b497d4a96142a431b3f2f304a275b1b7 [2022-07-13 11:11:06,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:11:06,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:11:06,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:11:06,635 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:11:06,636 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:11:06,637 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/pcomp.c [2022-07-13 11:11:06,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47847af41/d1909c8fbd5144f4b7487f0fd6e7e5e2/FLAG57cb20018 [2022-07-13 11:11:07,051 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:11:07,052 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcomp.c [2022-07-13 11:11:07,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47847af41/d1909c8fbd5144f4b7487f0fd6e7e5e2/FLAG57cb20018 [2022-07-13 11:11:07,461 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47847af41/d1909c8fbd5144f4b7487f0fd6e7e5e2 [2022-07-13 11:11:07,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:11:07,464 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:11:07,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:11:07,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:11:07,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:11:07,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44171661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07, skipping insertion in model container [2022-07-13 11:11:07,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:11:07,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:11:07,597 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/pcomp.c[588,601] [2022-07-13 11:11:07,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:11:07,620 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:11:07,628 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/pcomp.c[588,601] [2022-07-13 11:11:07,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:11:07,644 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:11:07,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07 WrapperNode [2022-07-13 11:11:07,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:11:07,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:11:07,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:11:07,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:11:07,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,656 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,686 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2022-07-13 11:11:07,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:11:07,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:11:07,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:11:07,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:11:07,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:11:07,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:11:07,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:11:07,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:11:07,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (1/1) ... [2022-07-13 11:11:07,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:11:07,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:11:07,757 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) [2022-07-13 11:11:07,763 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 [2022-07-13 11:11:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:11:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:11:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 11:11:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:11:07,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:11:07,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:11:07,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 11:11:07,870 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:11:07,872 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:11:08,018 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:11:08,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:11:08,023 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 11:11:08,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:11:08 BoogieIcfgContainer [2022-07-13 11:11:08,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:11:08,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:11:08,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:11:08,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:11:08,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:11:07" (1/3) ... [2022-07-13 11:11:08,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d89991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:11:08, skipping insertion in model container [2022-07-13 11:11:08,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:07" (2/3) ... [2022-07-13 11:11:08,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d89991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:11:08, skipping insertion in model container [2022-07-13 11:11:08,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:11:08" (3/3) ... [2022-07-13 11:11:08,030 INFO L111 eAbstractionObserver]: Analyzing ICFG pcomp.c [2022-07-13 11:11:08,041 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:11:08,041 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:11:08,078 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:11:08,090 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@36d83306, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7b19d36c [2022-07-13 11:11:08,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:11:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:08,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 11:11:08,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:08,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:08,107 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:08,117 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2022-07-13 11:11:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:11:08,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106437478] [2022-07-13 11:11:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:08,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:11:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:08,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:08,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:11:08,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106437478] [2022-07-13 11:11:08,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106437478] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:11:08,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:11:08,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:11:08,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116927794] [2022-07-13 11:11:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:11:08,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 11:11:08,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:11:08,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 11:11:08,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:11:08,310 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:08,321 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-07-13 11:11:08,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 11:11:08,323 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 11:11:08,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:08,328 INFO L225 Difference]: With dead ends: 44 [2022-07-13 11:11:08,328 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 11:11:08,331 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 [2022-07-13 11:11:08,333 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2022-07-13 11:11:08,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:11:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 11:11:08,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-13 11:11:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-13 11:11:08,357 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-07-13 11:11:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:08,358 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-13 11:11:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-13 11:11:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 11:11:08,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:08,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:08,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:11:08,360 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2022-07-13 11:11:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:11:08,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929598029] [2022-07-13 11:11:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:11:08,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 11:11:08,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257952311] [2022-07-13 11:11:08,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:08,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:11:08,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:11:08,427 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) [2022-07-13 11:11:08,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 11:11:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:08,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 11:11:08,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:08,681 INFO L356 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2022-07-13 11:11:08,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 229 [2022-07-13 11:11:08,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-13 11:11:08,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-13 11:11:08,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-07-13 11:11:09,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,273 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-07-13 11:11:09,274 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 24 [2022-07-13 11:11:09,290 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 5 treesize of output 3 [2022-07-13 11:11:09,346 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,349 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 26 [2022-07-13 11:11:09,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,406 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-13 11:11:09,407 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 69 treesize of output 26 [2022-07-13 11:11:09,479 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,480 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 0 case distinctions, treesize of input 55 treesize of output 16 [2022-07-13 11:11:09,487 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 5 treesize of output 3 [2022-07-13 11:11:09,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,535 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,537 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 16 [2022-07-13 11:11:09,556 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:09,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 5 [2022-07-13 11:11:09,566 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 5 treesize of output 3 [2022-07-13 11:11:09,794 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 5 treesize of output 3 [2022-07-13 11:11:09,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:11:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929598029] [2022-07-13 11:11:09,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 11:11:09,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257952311] [2022-07-13 11:11:09,881 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-07-13 11:11:09,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 11:11:10,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:11:10,088 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraintForOnePosition(ArrayIndexEqualityManager.java:415) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.constructNestedStoreUpdateConstraint(ArrayIndexEqualityManager.java:449) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.constructWriteConstraints2(Elim1Store.java:975) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:314) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:164) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:152) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:764) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:725) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:643) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:335) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDistributivityAndPush(QuantifierPusher.java:409) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:354) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:176) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:251) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-13 11:11:10,092 INFO L158 Benchmark]: Toolchain (without parser) took 2627.76ms. Allocated memory is still 130.0MB. Free memory was 97.9MB in the beginning and 67.5MB in the end (delta: 30.3MB). Peak memory consumption was 62.5MB. Max. memory is 16.1GB. [2022-07-13 11:11:10,092 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 48.3MB in the end (delta: 47.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 11:11:10,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.38ms. Allocated memory is still 130.0MB. Free memory was 97.5MB in the beginning and 106.3MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 11:11:10,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.34ms. Allocated memory is still 130.0MB. Free memory was 106.3MB in the beginning and 104.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 11:11:10,093 INFO L158 Benchmark]: Boogie Preprocessor took 41.91ms. Allocated memory is still 130.0MB. Free memory was 104.7MB in the beginning and 103.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 11:11:10,093 INFO L158 Benchmark]: RCFGBuilder took 294.39ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 90.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 11:11:10,094 INFO L158 Benchmark]: TraceAbstraction took 2064.93ms. Allocated memory is still 130.0MB. Free memory was 90.2MB in the beginning and 67.5MB in the end (delta: 22.7MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. [2022-07-13 11:11:10,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 92.3MB. Free memory was 48.4MB in the beginning and 48.3MB in the end (delta: 47.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.38ms. Allocated memory is still 130.0MB. Free memory was 97.5MB in the beginning and 106.3MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.34ms. Allocated memory is still 130.0MB. Free memory was 106.3MB in the beginning and 104.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.91ms. Allocated memory is still 130.0MB. Free memory was 104.7MB in the beginning and 103.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 294.39ms. Allocated memory is still 130.0MB. Free memory was 103.0MB in the beginning and 90.7MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2064.93ms. Allocated memory is still 130.0MB. Free memory was 90.2MB in the beginning and 67.5MB in the end (delta: 22.7MB). Peak memory consumption was 56.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ClassCastException: class de.uni_freiburg.informatik.ultimate.logic.TermVariable cannot be cast to class de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm (de.uni_freiburg.informatik.ultimate.logic.TermVariable and de.uni_freiburg.informatik.ultimate.logic.ApplicationTerm are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @17f9344b): de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.MultiDimensionalSelect.(MultiDimensionalSelect.java:103) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-07-13 11:11:10,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/pcomp.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1472da9c0a8f011e4f758f37d66a1227b497d4a96142a431b3f2f304a275b1b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:11:11,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:11:11,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:11:11,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:11:11,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:11:11,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:11:11,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:11:11,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:11:11,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:11:11,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:11:11,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:11:11,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:11:11,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:11:11,782 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:11:11,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:11:11,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:11:11,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:11:11,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:11:11,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:11:11,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:11:11,795 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:11:11,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:11:11,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:11:11,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:11:11,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:11:11,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:11:11,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:11:11,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:11:11,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:11:11,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:11:11,803 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:11:11,804 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:11:11,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:11:11,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:11:11,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:11:11,805 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:11:11,805 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:11:11,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:11:11,806 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:11:11,806 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:11:11,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:11:11,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:11:11,815 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 11:11:11,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:11:11,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:11:11,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:11:11,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:11:11,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:11:11,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:11:11,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:11:11,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:11:11,843 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:11:11,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:11:11,843 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:11:11,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:11:11,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:11:11,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:11:11,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:11:11,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:11:11,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:11:11,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:11:11,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:11:11,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:11:11,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 11:11:11,853 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1472da9c0a8f011e4f758f37d66a1227b497d4a96142a431b3f2f304a275b1b7 [2022-07-13 11:11:12,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:11:12,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:11:12,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:11:12,137 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:11:12,138 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:11:12,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/pcomp.c [2022-07-13 11:11:12,192 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee4433e/186228ac19f643e6885ef61954c05abb/FLAG33ec3965b [2022-07-13 11:11:12,567 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:11:12,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/pcomp.c [2022-07-13 11:11:12,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee4433e/186228ac19f643e6885ef61954c05abb/FLAG33ec3965b [2022-07-13 11:11:12,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53ee4433e/186228ac19f643e6885ef61954c05abb [2022-07-13 11:11:12,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:11:12,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:11:12,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:11:12,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:11:12,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:11:12,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110e7e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12, skipping insertion in model container [2022-07-13 11:11:12,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:11:12,605 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:11:12,718 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/pcomp.c[588,601] [2022-07-13 11:11:12,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:11:12,782 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:11:12,792 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/pcomp.c[588,601] [2022-07-13 11:11:12,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:11:12,825 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:11:12,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12 WrapperNode [2022-07-13 11:11:12,826 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:11:12,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:11:12,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:11:12,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:11:12,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,867 INFO L137 Inliner]: procedures = 18, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2022-07-13 11:11:12,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:11:12,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:11:12,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:11:12,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:11:12,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:11:12,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:11:12,911 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:11:12,911 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:11:12,912 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (1/1) ... [2022-07-13 11:11:12,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:11:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:11:12,940 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) [2022-07-13 11:11:12,957 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 [2022-07-13 11:11:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:11:12,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 11:11:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-13 11:11:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 11:11:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:11:12,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:11:12,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-13 11:11:13,039 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:11:13,040 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:11:13,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:11:13,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:11:13,428 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-13 11:11:13,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:11:13 BoogieIcfgContainer [2022-07-13 11:11:13,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:11:13,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:11:13,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:11:13,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:11:13,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:11:12" (1/3) ... [2022-07-13 11:11:13,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b4bd69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:11:13, skipping insertion in model container [2022-07-13 11:11:13,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:11:12" (2/3) ... [2022-07-13 11:11:13,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b4bd69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:11:13, skipping insertion in model container [2022-07-13 11:11:13,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:11:13" (3/3) ... [2022-07-13 11:11:13,434 INFO L111 eAbstractionObserver]: Analyzing ICFG pcomp.c [2022-07-13 11:11:13,443 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:11:13,443 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:11:13,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:11:13,492 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@55e24e5a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2a07c755 [2022-07-13 11:11:13,493 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:11:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 11:11:13,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:13,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:13,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:13,514 INFO L85 PathProgramCache]: Analyzing trace with hash -592971038, now seen corresponding path program 1 times [2022-07-13 11:11:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:13,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500165271] [2022-07-13 11:11:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:13,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:13,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:13,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:13,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 11:11:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:13,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 11:11:13,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:13,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:11:13,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:13,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500165271] [2022-07-13 11:11:13,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500165271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:11:13,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:11:13,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:11:13,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787054759] [2022-07-13 11:11:13,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:11:13,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 11:11:13,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 11:11:13,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:11:13,690 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:13,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:13,702 INFO L93 Difference]: Finished difference Result 44 states and 62 transitions. [2022-07-13 11:11:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 11:11:13,704 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 11:11:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:13,709 INFO L225 Difference]: With dead ends: 44 [2022-07-13 11:11:13,710 INFO L226 Difference]: Without dead ends: 20 [2022-07-13 11:11:13,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 11:11:13,715 INFO L413 NwaCegarLoop]: 28 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, 28 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 [2022-07-13 11:11:13,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 11:11:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-07-13 11:11:13,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-07-13 11:11:13,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:13,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-13 11:11:13,739 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2022-07-13 11:11:13,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:13,739 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-13 11:11:13,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:13,740 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-13 11:11:13,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 11:11:13,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:13,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:13,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 11:11:13,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:13,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:13,950 INFO L85 PathProgramCache]: Analyzing trace with hash 108093540, now seen corresponding path program 1 times [2022-07-13 11:11:13,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:13,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027358863] [2022-07-13 11:11:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:13,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:13,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:13,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:13,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 11:11:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:14,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 11:11:14,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:14,502 INFO L356 Elim1Store]: treesize reduction 159, result has 28.7 percent of original size [2022-07-13 11:11:14,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 250 treesize of output 302 [2022-07-13 11:11:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:14,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:14,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-07-13 11:11:14,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:14,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:14,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-07-13 11:11:14,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:14,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:14,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-07-13 11:11:15,564 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-13 11:11:15,565 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 28 [2022-07-13 11:11:15,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:15,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-07-13 11:11:15,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:15,711 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-07-13 11:11:15,711 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 50 [2022-07-13 11:11:15,855 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:15,880 INFO L356 Elim1Store]: treesize reduction 13, result has 38.1 percent of original size [2022-07-13 11:11:15,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 40 [2022-07-13 11:11:15,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:15,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-13 11:11:16,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:16,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-13 11:11:16,550 INFO L356 Elim1Store]: treesize reduction 47, result has 26.6 percent of original size [2022-07-13 11:11:16,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 66 treesize of output 41 [2022-07-13 11:11:16,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:16,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-07-13 11:11:16,664 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:11:16,665 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2022-07-13 11:11:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:16,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:11:16,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:16,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027358863] [2022-07-13 11:11:16,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027358863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:11:16,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:11:16,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 11:11:16,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801348565] [2022-07-13 11:11:16,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:11:16,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 11:11:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 11:11:16,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:11:16,683 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:17,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:17,176 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2022-07-13 11:11:17,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 11:11:17,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-07-13 11:11:17,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:17,177 INFO L225 Difference]: With dead ends: 39 [2022-07-13 11:11:17,177 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 11:11:17,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:11:17,178 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:17,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 65 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:11:17,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 11:11:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-07-13 11:11:17,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:17,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-07-13 11:11:17,183 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 14 [2022-07-13 11:11:17,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:17,183 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-07-13 11:11:17,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:17,183 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-07-13 11:11:17,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 11:11:17,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:17,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:17,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 11:11:17,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:17,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:17,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1850906398, now seen corresponding path program 1 times [2022-07-13 11:11:17,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:17,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36213154] [2022-07-13 11:11:17,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:17,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:17,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:17,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:17,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 11:11:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:17,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 11:11:17,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:17,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:11:17,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:17,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36213154] [2022-07-13 11:11:17,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36213154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:11:17,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:11:17,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 11:11:17,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526209928] [2022-07-13 11:11:17,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:11:17,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 11:11:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:17,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 11:11:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:11:17,643 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:18,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:18,195 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2022-07-13 11:11:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 11:11:18,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 11:11:18,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:18,212 INFO L225 Difference]: With dead ends: 54 [2022-07-13 11:11:18,212 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 11:11:18,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-13 11:11:18,213 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 73 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:18,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 23 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:11:18,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 11:11:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2022-07-13 11:11:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 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) [2022-07-13 11:11:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2022-07-13 11:11:18,218 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 16 [2022-07-13 11:11:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:18,218 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2022-07-13 11:11:18,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2022-07-13 11:11:18,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 11:11:18,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:18,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:18,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-13 11:11:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:18,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:18,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1060218526, now seen corresponding path program 1 times [2022-07-13 11:11:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537139] [2022-07-13 11:11:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:18,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:18,429 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:18,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 11:11:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:18,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 11:11:18,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:18,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:11:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:18,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537139] [2022-07-13 11:11:18,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537139] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:11:18,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:11:18,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2022-07-13 11:11:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730330075] [2022-07-13 11:11:18,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:11:18,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 11:11:18,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:18,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 11:11:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-07-13 11:11:18,881 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2022-07-13 11:11:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:19,921 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2022-07-13 11:11:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 11:11:19,922 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 11:11:19,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:19,923 INFO L225 Difference]: With dead ends: 76 [2022-07-13 11:11:19,924 INFO L226 Difference]: Without dead ends: 62 [2022-07-13 11:11:19,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2022-07-13 11:11:19,925 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 159 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:19,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 44 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:11:19,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-13 11:11:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 42. [2022-07-13 11:11:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.170731707317073) internal successors, (48), 41 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) [2022-07-13 11:11:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-07-13 11:11:19,929 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 16 [2022-07-13 11:11:19,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:19,930 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-07-13 11:11:19,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) [2022-07-13 11:11:19,930 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-07-13 11:11:19,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 11:11:19,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:19,931 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:19,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 11:11:20,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:20,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1120615462, now seen corresponding path program 1 times [2022-07-13 11:11:20,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:20,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597541996] [2022-07-13 11:11:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:20,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:20,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:20,142 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:20,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 11:11:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:20,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 11:11:20,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:20,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:11:20,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:20,631 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:20,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597541996] [2022-07-13 11:11:20,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597541996] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:11:20,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:11:20,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2022-07-13 11:11:20,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586146267] [2022-07-13 11:11:20,631 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:11:20,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 11:11:20,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:20,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 11:11:20,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-13 11:11:20,632 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:21,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:21,254 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2022-07-13 11:11:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 11:11:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 11:11:21,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:21,267 INFO L225 Difference]: With dead ends: 53 [2022-07-13 11:11:21,267 INFO L226 Difference]: Without dead ends: 37 [2022-07-13 11:11:21,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-07-13 11:11:21,268 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:21,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 31 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:11:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-13 11:11:21,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-07-13 11:11:21,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:21,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-07-13 11:11:21,272 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 18 [2022-07-13 11:11:21,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:21,272 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-07-13 11:11:21,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-07-13 11:11:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-13 11:11:21,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:21,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:21,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 11:11:21,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:21,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:21,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:21,481 INFO L85 PathProgramCache]: Analyzing trace with hash 615941150, now seen corresponding path program 1 times [2022-07-13 11:11:21,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:21,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285502791] [2022-07-13 11:11:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:21,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:21,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:21,483 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:21,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 11:11:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:21,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 11:11:21,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:21,826 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 11:11:21,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-07-13 11:11:21,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:21,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:21,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-07-13 11:11:21,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:21,853 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:21,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-07-13 11:11:21,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-07-13 11:11:21,966 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 25 treesize of output 25 [2022-07-13 11:11:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:22,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:22,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:22,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:22,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:22,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:22,048 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:11:22,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2022-07-13 11:11:22,110 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:11:22,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2022-07-13 11:11:22,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:22,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:11:24,288 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_214 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 64) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_214) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))))) is different from false [2022-07-13 11:11:24,315 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_213 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_214 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_214) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))) (_ bv0 64))) is different from false [2022-07-13 11:11:24,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-13 11:11:24,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:24,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285502791] [2022-07-13 11:11:24,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285502791] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:11:24,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:11:24,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-13 11:11:24,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267095068] [2022-07-13 11:11:24,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:11:24,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-13 11:11:24,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:24,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-13 11:11:24,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=99, Unknown=2, NotChecked=42, Total=182 [2022-07-13 11:11:24,330 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:26,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:26,598 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2022-07-13 11:11:26,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 11:11:26,612 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-13 11:11:26,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:26,612 INFO L225 Difference]: With dead ends: 59 [2022-07-13 11:11:26,612 INFO L226 Difference]: Without dead ends: 57 [2022-07-13 11:11:26,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=87, Invalid=225, Unknown=2, NotChecked=66, Total=380 [2022-07-13 11:11:26,613 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 37 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:26,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 128 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 54 Invalid, 0 Unknown, 76 Unchecked, 1.8s Time] [2022-07-13 11:11:26,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-07-13 11:11:26,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2022-07-13 11:11:26,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.146341463414634) internal successors, (47), 41 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) [2022-07-13 11:11:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2022-07-13 11:11:26,618 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 20 [2022-07-13 11:11:26,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:26,619 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2022-07-13 11:11:26,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2022-07-13 11:11:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 11:11:26,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:26,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:26,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-13 11:11:26,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:26,826 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash 803751580, now seen corresponding path program 2 times [2022-07-13 11:11:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:26,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666354100] [2022-07-13 11:11:26,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 11:11:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:26,828 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:26,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 11:11:27,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 11:11:27,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:11:27,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 11:11:27,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:27,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 11:11:27,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:11:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 11:11:27,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666354100] [2022-07-13 11:11:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666354100] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:11:27,561 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:11:27,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2022-07-13 11:11:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447507156] [2022-07-13 11:11:27,561 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:11:27,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 11:11:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:27,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 11:11:27,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-07-13 11:11:27,562 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:29,721 INFO L93 Difference]: Finished difference Result 108 states and 123 transitions. [2022-07-13 11:11:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 11:11:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-13 11:11:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:29,722 INFO L225 Difference]: With dead ends: 108 [2022-07-13 11:11:29,722 INFO L226 Difference]: Without dead ends: 91 [2022-07-13 11:11:29,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 11:11:29,724 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 189 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:29,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 71 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 11:11:29,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-13 11:11:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 56. [2022-07-13 11:11:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 55 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2022-07-13 11:11:29,730 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 22 [2022-07-13 11:11:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:29,731 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2022-07-13 11:11:29,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2022-07-13 11:11:29,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 11:11:29,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:29,732 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:29,742 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-13 11:11:29,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:29,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash 678263444, now seen corresponding path program 1 times [2022-07-13 11:11:29,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:29,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606345357] [2022-07-13 11:11:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:11:29,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:29,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:29,951 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:29,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 11:11:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:11:30,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-13 11:11:30,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:30,596 INFO L356 Elim1Store]: treesize reduction 47, result has 40.5 percent of original size [2022-07-13 11:11:30,596 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 73 [2022-07-13 11:11:30,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 78 [2022-07-13 11:11:30,765 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 11:11:30,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-07-13 11:11:30,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-07-13 11:11:30,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,832 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 17 [2022-07-13 11:11:30,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-07-13 11:11:30,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:30,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:31,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:31,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:31,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:31,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:31,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 69 [2022-07-13 11:11:33,709 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-13 11:11:33,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 116 treesize of output 56 [2022-07-13 11:11:33,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:11:33,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:11:48,425 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_320 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_322 (_ BitVec 32)) (v_ArrVal_321 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_320))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse1 (let ((.cse3 (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse2 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv8 32)) v_ArrVal_322) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv12 32)) v_ArrVal_321)) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse3 |c_ULTIMATE.start_main_~c~0#1.offset|))))) (or (= (_ bv1 64) (let ((.cse0 (bvadd .cse1 (concat (select .cse2 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv4 32))) (select .cse2 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (concat ((_ extract 63 32) .cse0) ((_ extract 31 0) .cse0)))) (not (= (_ bv0 64) .cse1))))))) is different from false [2022-07-13 11:11:48,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-07-13 11:11:48,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:48,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606345357] [2022-07-13 11:11:48,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606345357] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:11:48,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:11:48,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-07-13 11:11:48,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183364748] [2022-07-13 11:11:48,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:11:48,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-13 11:11:48,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:48,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-13 11:11:48,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=347, Unknown=1, NotChecked=38, Total=462 [2022-07-13 11:11:48,454 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 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) [2022-07-13 11:11:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:11:55,814 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2022-07-13 11:11:55,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 11:11:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 11:11:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:11:55,815 INFO L225 Difference]: With dead ends: 66 [2022-07-13 11:11:55,815 INFO L226 Difference]: Without dead ends: 64 [2022-07-13 11:11:55,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=97, Invalid=458, Unknown=1, NotChecked=44, Total=600 [2022-07-13 11:11:55,816 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:11:55,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 97 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 53 Unchecked, 3.6s Time] [2022-07-13 11:11:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-13 11:11:55,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2022-07-13 11:11:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:11:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-07-13 11:11:55,822 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 24 [2022-07-13 11:11:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:11:55,822 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-07-13 11:11:55,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 22 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) [2022-07-13 11:11:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-07-13 11:11:55,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 11:11:55,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:11:55,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:11:55,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 11:11:56,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:11:56,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:11:56,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:11:56,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1304966232, now seen corresponding path program 3 times [2022-07-13 11:11:56,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:11:56,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513024189] [2022-07-13 11:11:56,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 11:11:56,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:11:56,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:11:56,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:11:56,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 11:11:56,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 11:11:56,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:11:56,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 11:11:56,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:11:56,567 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 15 treesize of output 13 [2022-07-13 11:11:56,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,593 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 11:11:56,594 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 1 case distinctions, treesize of input 24 treesize of output 30 [2022-07-13 11:11:56,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:11:56,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-07-13 11:11:56,625 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 25 treesize of output 25 [2022-07-13 11:11:56,652 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 25 treesize of output 25 [2022-07-13 11:11:56,701 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 25 treesize of output 25 [2022-07-13 11:11:56,719 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 25 treesize of output 25 [2022-07-13 11:11:56,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,776 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:11:56,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 50 [2022-07-13 11:11:56,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:11:56,816 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:11:56,819 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 43 [2022-07-13 11:11:56,871 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 11:11:56,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 29 [2022-07-13 11:11:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 11:11:56,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:11:58,901 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_389 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_389) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))) (_ bv0 64))) is different from false [2022-07-13 11:11:58,926 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_387 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_389 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 64) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_387) |c_ULTIMATE.start_main_~b~0#1.base| v_ArrVal_389) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse0 |c_ULTIMATE.start_main_~c~0#1.offset|))))) is different from false [2022-07-13 11:11:58,942 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-07-13 11:11:58,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:11:58,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513024189] [2022-07-13 11:11:58,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513024189] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:11:58,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:11:58,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2022-07-13 11:11:58,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576052015] [2022-07-13 11:11:58,943 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:11:58,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-13 11:11:58,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:11:58,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-13 11:11:58,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=159, Unknown=2, NotChecked=54, Total=272 [2022-07-13 11:11:58,944 INFO L87 Difference]: Start difference. First operand 60 states and 66 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) [2022-07-13 11:12:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:12:06,424 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2022-07-13 11:12:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 11:12:06,439 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 26 [2022-07-13 11:12:06,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:12:06,440 INFO L225 Difference]: With dead ends: 91 [2022-07-13 11:12:06,440 INFO L226 Difference]: Without dead ends: 89 [2022-07-13 11:12:06,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=157, Invalid=499, Unknown=2, NotChecked=98, Total=756 [2022-07-13 11:12:06,441 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:12:06,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 90 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 97 Invalid, 0 Unknown, 121 Unchecked, 1.8s Time] [2022-07-13 11:12:06,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-13 11:12:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 65. [2022-07-13 11:12:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.140625) internal successors, (73), 64 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:12:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-07-13 11:12:06,449 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 26 [2022-07-13 11:12:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:12:06,449 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-07-13 11:12:06,449 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) [2022-07-13 11:12:06,450 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-07-13 11:12:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 11:12:06,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:12:06,450 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:12:06,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 11:12:06,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:12:06,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:12:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:12:06,674 INFO L85 PathProgramCache]: Analyzing trace with hash -231193078, now seen corresponding path program 2 times [2022-07-13 11:12:06,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:12:06,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881642055] [2022-07-13 11:12:06,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 11:12:06,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:12:06,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:12:06,675 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:12:06,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 11:12:07,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 11:12:07,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:12:07,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 11:12:07,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:12:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 11:12:07,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:12:07,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 11:12:07,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:12:07,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881642055] [2022-07-13 11:12:07,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881642055] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:12:07,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:12:07,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2022-07-13 11:12:07,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058246811] [2022-07-13 11:12:07,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:12:07,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 11:12:07,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:12:07,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 11:12:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-07-13 11:12:07,743 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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) [2022-07-13 11:12:09,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:12:09,257 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2022-07-13 11:12:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 11:12:09,269 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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 28 [2022-07-13 11:12:09,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:12:09,270 INFO L225 Difference]: With dead ends: 83 [2022-07-13 11:12:09,270 INFO L226 Difference]: Without dead ends: 59 [2022-07-13 11:12:09,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2022-07-13 11:12:09,272 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 151 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:12:09,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 72 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:12:09,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-13 11:12:09,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 52. [2022-07-13 11:12:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 51 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:12:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2022-07-13 11:12:09,277 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 28 [2022-07-13 11:12:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:12:09,278 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2022-07-13 11:12:09,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.888888888888889) internal successors, (52), 18 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) [2022-07-13 11:12:09,278 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2022-07-13 11:12:09,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-13 11:12:09,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:12:09,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:12:09,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-07-13 11:12:09,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:12:09,481 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:12:09,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:12:09,482 INFO L85 PathProgramCache]: Analyzing trace with hash 341343694, now seen corresponding path program 3 times [2022-07-13 11:12:09,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:12:09,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375881203] [2022-07-13 11:12:09,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 11:12:09,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:12:09,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:12:09,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:12:09,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 11:12:10,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-13 11:12:10,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:12:10,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-13 11:12:10,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:12:10,214 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-13 11:12:10,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2022-07-13 11:12:10,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,234 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:10,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2022-07-13 11:12:10,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 42 [2022-07-13 11:12:10,317 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-13 11:12:10,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 37 [2022-07-13 11:12:10,379 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-07-13 11:12:10,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 48 [2022-07-13 11:12:10,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 41 [2022-07-13 11:12:10,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:10,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:10,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 101 [2022-07-13 11:12:10,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:10,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 17 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 93 [2022-07-13 11:12:12,943 INFO L356 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2022-07-13 11:12:12,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 116 treesize of output 56 [2022-07-13 11:12:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:12:12,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:12:39,302 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_508 (_ BitVec 32)) (v_ArrVal_512 (_ BitVec 32)) (v_ArrVal_511 (_ BitVec 32)) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_509 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_506))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse2 (let ((.cse3 (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store .cse1 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv8 32)) v_ArrVal_509) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv12 32)) v_ArrVal_508) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv16 32)) v_ArrVal_512) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv20 32)) v_ArrVal_511)) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse3 |c_ULTIMATE.start_main_~c~0#1.offset|))))) (or (= (_ bv1 64) (let ((.cse0 (bvadd (concat (select .cse1 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv4 32))) (select .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse2))) (concat ((_ extract 63 32) .cse0) ((_ extract 31 0) .cse0)))) (not (= (_ bv0 64) .cse2))))))) is different from false [2022-07-13 11:12:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2022-07-13 11:12:39,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:12:39,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375881203] [2022-07-13 11:12:39,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375881203] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:12:39,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:12:39,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2022-07-13 11:12:39,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903258736] [2022-07-13 11:12:39,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:12:39,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 11:12:39,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:12:39,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 11:12:39,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=695, Unknown=1, NotChecked=54, Total=870 [2022-07-13 11:12:39,378 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:12:41,897 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_508 (_ BitVec 32)) (v_ArrVal_512 (_ BitVec 32)) (v_ArrVal_511 (_ BitVec 32)) (v_ArrVal_506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_509 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_506))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse2 (let ((.cse3 (select (store .cse4 |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store .cse1 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv8 32)) v_ArrVal_509) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv12 32)) v_ArrVal_508) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv16 32)) v_ArrVal_512) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv20 32)) v_ArrVal_511)) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse3 |c_ULTIMATE.start_main_~c~0#1.offset|))))) (or (= (_ bv1 64) (let ((.cse0 (bvadd (concat (select .cse1 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv4 32))) (select .cse1 |c_ULTIMATE.start_main_~b~0#1.offset|)) .cse2))) (concat ((_ extract 63 32) .cse0) ((_ extract 31 0) .cse0)))) (not (= (_ bv0 64) .cse2))))))) (forall ((v_ArrVal_508 (_ BitVec 32)) (v_ArrVal_512 (_ BitVec 32)) (v_ArrVal_511 (_ BitVec 32)) (v_ArrVal_509 (_ BitVec 32))) (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|))) (let ((.cse6 (let ((.cse8 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (store .cse7 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv8 32)) v_ArrVal_509) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv12 32)) v_ArrVal_508) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv16 32)) v_ArrVal_512) (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv20 32)) v_ArrVal_511)) |c_ULTIMATE.start_main_~c~0#1.base|))) (concat (select .cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~c~0#1.offset|)) (select .cse8 |c_ULTIMATE.start_main_~c~0#1.offset|))))) (or (= (let ((.cse5 (bvadd .cse6 (concat (select .cse7 (bvadd |c_ULTIMATE.start_main_~b~0#1.offset| (_ bv4 32))) (select .cse7 |c_ULTIMATE.start_main_~b~0#1.offset|))))) (concat ((_ extract 63 32) .cse5) ((_ extract 31 0) .cse5))) (_ bv1 64)) (not (= (_ bv0 64) .cse6))))))) is different from false [2022-07-13 11:12:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:12:50,711 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2022-07-13 11:12:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-13 11:12:50,712 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 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 30 [2022-07-13 11:12:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:12:50,712 INFO L225 Difference]: With dead ends: 78 [2022-07-13 11:12:50,712 INFO L226 Difference]: Without dead ends: 76 [2022-07-13 11:12:50,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=182, Invalid=1084, Unknown=2, NotChecked=138, Total=1406 [2022-07-13 11:12:50,713 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:12:50,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 108 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 99 Unchecked, 2.4s Time] [2022-07-13 11:12:50,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-07-13 11:12:50,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 57. [2022-07-13 11:12:50,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 56 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:12:50,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-07-13 11:12:50,724 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 30 [2022-07-13 11:12:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:12:50,724 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-07-13 11:12:50,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 30 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 11:12:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-07-13 11:12:50,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-13 11:12:50,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:12:50,725 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:12:50,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-13 11:12:50,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 11:12:50,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:12:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:12:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash 505093188, now seen corresponding path program 4 times [2022-07-13 11:12:50,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 11:12:50,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753293520] [2022-07-13 11:12:50,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 11:12:50,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 11:12:50,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 11:12:50,940 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 11:12:50,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-13 11:12:51,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 11:12:51,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 11:12:51,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-13 11:12:51,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:12:51,908 INFO L356 Elim1Store]: treesize reduction 2, result has 75.0 percent of original size [2022-07-13 11:12:51,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 97 [2022-07-13 11:12:51,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:51,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:51,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28 [2022-07-13 11:12:51,980 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-13 11:12:51,980 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 1 case distinctions, treesize of input 28 treesize of output 34 [2022-07-13 11:12:52,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,043 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2022-07-13 11:12:52,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 8 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 43 [2022-07-13 11:12:52,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:52,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,311 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:52,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 103 [2022-07-13 11:12:52,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 18 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 95 [2022-07-13 11:12:52,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:52,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:52,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:52,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:52,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:52,839 INFO L356 Elim1Store]: treesize reduction 65, result has 34.3 percent of original size [2022-07-13 11:12:52,839 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 285 treesize of output 185 [2022-07-13 11:12:53,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 11:12:53,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:53,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-13 11:12:53,672 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-07-13 11:12:53,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 16 case distinctions, treesize of input 219 treesize of output 167 [2022-07-13 11:13:15,502 INFO L356 Elim1Store]: treesize reduction 52, result has 20.0 percent of original size [2022-07-13 11:13:15,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 15 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 291 treesize of output 127 [2022-07-13 11:13:15,605 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:13:15,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:14:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:14:46,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 11:14:46,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753293520] [2022-07-13 11:14:46,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753293520] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:14:46,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-13 11:14:46,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 39 [2022-07-13 11:14:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434729778] [2022-07-13 11:14:46,133 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-13 11:14:46,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-13 11:14:46,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 11:14:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-13 11:14:46,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1322, Unknown=9, NotChecked=0, Total=1482 [2022-07-13 11:14:46,134 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 39 states, 39 states have (on average 1.6153846153846154) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)