./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/nla-digbench-scaling/hard2_valuebound2.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 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:48:45,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:48:45,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:48:45,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:48:45,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:48:45,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:48:45,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:48:45,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:48:45,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:48:45,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:48:45,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:48:45,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:48:45,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:48:45,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:48:45,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:48:45,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:48:45,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:48:45,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:48:45,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:48:45,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:48:45,540 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:48:45,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:48:45,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:48:45,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:48:45,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:48:45,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:48:45,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:48:45,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:48:45,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:48:45,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:48:45,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:48:45,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:48:45,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:48:45,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:48:45,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:48:45,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:48:45,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:48:45,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:48:45,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:48:45,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:48:45,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:48:45,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:48:45,561 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:48:45,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:48:45,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:48:45,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:48:45,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:48:45,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:48:45,587 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:48:45,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:48:45,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:48:45,588 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:48:45,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:48:45,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:48:45,590 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:48:45,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:48:45,590 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:48:45,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:48:45,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:48:45,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:48:45,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:48:45,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:48:45,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:48:45,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:48:45,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:48:45,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:48:45,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:48:45,592 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:48:45,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:48:45,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:48:45,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39b9505d3a064a677b57bccb6de3a4c04e873275d34ee3c16e80371638b07149 [2022-07-21 03:48:45,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:48:45,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:48:45,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:48:45,897 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:48:45,897 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:48:45,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2022-07-21 03:48:45,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0d9b7f8/a1a8c6f07dbf472894c7e1e286df9ca4/FLAG16598db35 [2022-07-21 03:48:46,280 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:48:46,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound2.c [2022-07-21 03:48:46,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0d9b7f8/a1a8c6f07dbf472894c7e1e286df9ca4/FLAG16598db35 [2022-07-21 03:48:46,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e0d9b7f8/a1a8c6f07dbf472894c7e1e286df9ca4 [2022-07-21 03:48:46,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:48:46,713 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:48:46,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:48:46,714 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:48:46,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:48:46,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fc4de47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46, skipping insertion in model container [2022-07-21 03:48:46,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:48:46,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:48:46,828 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/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2022-07-21 03:48:46,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:48:46,843 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:48:46,856 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/nla-digbench-scaling/hard2_valuebound2.c[526,539] [2022-07-21 03:48:46,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:48:46,900 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:48:46,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46 WrapperNode [2022-07-21 03:48:46,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:48:46,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:48:46,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:48:46,907 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:48:46,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,916 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,931 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2022-07-21 03:48:46,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:48:46,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:48:46,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:48:46,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:48:46,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:48:46,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:48:46,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:48:46,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:48:46,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (1/1) ... [2022-07-21 03:48:46,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:48:46,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:48:46,984 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) [2022-07-21 03:48:47,005 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 [2022-07-21 03:48:47,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:48:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:48:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:48:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:48:47,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:48:47,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:48:47,062 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:48:47,063 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:48:47,193 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:48:47,197 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:48:47,197 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-21 03:48:47,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:48:47 BoogieIcfgContainer [2022-07-21 03:48:47,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:48:47,200 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:48:47,200 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:48:47,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:48:47,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:48:46" (1/3) ... [2022-07-21 03:48:47,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd7358c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:48:47, skipping insertion in model container [2022-07-21 03:48:47,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:48:46" (2/3) ... [2022-07-21 03:48:47,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd7358c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:48:47, skipping insertion in model container [2022-07-21 03:48:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:48:47" (3/3) ... [2022-07-21 03:48:47,204 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound2.c [2022-07-21 03:48:47,214 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:48:47,214 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:48:47,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:48:47,279 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@70376c97, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@49fcf025 [2022-07-21 03:48:47,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:48:47,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-21 03:48:47,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 03:48:47,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:47,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:47,292 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:47,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2022-07-21 03:48:47,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:47,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785442002] [2022-07-21 03:48:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:47,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:47,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:48:47,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:47,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785442002] [2022-07-21 03:48:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785442002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:48:47,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:48:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:48:47,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106225150] [2022-07-21 03:48:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:48:47,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:48:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:48:47,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:48:47,447 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:48:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:48:47,464 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2022-07-21 03:48:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:48:47,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-21 03:48:47,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:48:47,473 INFO L225 Difference]: With dead ends: 49 [2022-07-21 03:48:47,474 INFO L226 Difference]: Without dead ends: 22 [2022-07-21 03:48:47,476 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 [2022-07-21 03:48:47,480 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-07-21 03:48:47,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:48:47,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-21 03:48:47,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-21 03:48:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:48:47,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2022-07-21 03:48:47,512 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2022-07-21 03:48:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:48:47,513 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2022-07-21 03:48:47,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:48:47,514 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2022-07-21 03:48:47,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 03:48:47,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:47,516 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:47,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 03:48:47,518 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:47,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2022-07-21 03:48:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837329358] [2022-07-21 03:48:47,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:47,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:48:47,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:47,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837329358] [2022-07-21 03:48:47,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837329358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:48:47,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:48:47,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:48:47,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403051719] [2022-07-21 03:48:47,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:48:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:48:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:48:47,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:48:47,620 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:48:47,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:48:47,683 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-07-21 03:48:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:48:47,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-21 03:48:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:48:47,684 INFO L225 Difference]: With dead ends: 35 [2022-07-21 03:48:47,685 INFO L226 Difference]: Without dead ends: 33 [2022-07-21 03:48:47,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:48:47,686 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:48:47,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:48:47,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-07-21 03:48:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2022-07-21 03:48:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:48:47,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-07-21 03:48:47,693 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2022-07-21 03:48:47,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:48:47,694 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-07-21 03:48:47,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:48:47,694 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-07-21 03:48:47,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 03:48:47,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:47,695 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:47,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 03:48:47,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:47,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:47,699 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2022-07-21 03:48:47,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:47,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263646378] [2022-07-21 03:48:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:47,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:47,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 03:48:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:48:47,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:47,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263646378] [2022-07-21 03:48:47,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263646378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:48:47,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:48:47,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:48:47,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367523181] [2022-07-21 03:48:47,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:48:47,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:48:47,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:47,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:48:47,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:48:47,764 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:48:47,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:48:47,836 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2022-07-21 03:48:47,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:48:47,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-21 03:48:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:48:47,837 INFO L225 Difference]: With dead ends: 39 [2022-07-21 03:48:47,837 INFO L226 Difference]: Without dead ends: 37 [2022-07-21 03:48:47,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:48:47,838 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:48:47,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:48:47,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-21 03:48:47,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-07-21 03:48:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-21 03:48:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-07-21 03:48:47,844 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2022-07-21 03:48:47,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:48:47,844 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-21 03:48:47,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:48:47,844 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-07-21 03:48:47,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 03:48:47,845 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:47,845 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:47,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 03:48:47,845 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:47,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:47,845 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2022-07-21 03:48:47,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:47,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517643562] [2022-07-21 03:48:47,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:47,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:47,871 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:48:47,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530152278] [2022-07-21 03:48:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:47,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:47,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:48:47,882 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) [2022-07-21 03:48:47,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:48:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:47,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:48:47,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:48:48,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 03:48:48,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:48:48,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:48,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517643562] [2022-07-21 03:48:48,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:48:48,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530152278] [2022-07-21 03:48:48,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530152278] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:48:48,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:48:48,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:48:48,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852721671] [2022-07-21 03:48:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:48:48,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:48:48,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:48:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:48:48,048 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:48:48,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:48:48,116 INFO L93 Difference]: Finished difference Result 58 states and 76 transitions. [2022-07-21 03:48:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:48:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-21 03:48:48,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:48:48,117 INFO L225 Difference]: With dead ends: 58 [2022-07-21 03:48:48,117 INFO L226 Difference]: Without dead ends: 44 [2022-07-21 03:48:48,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:48:48,119 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:48:48,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 96 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:48:48,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-21 03:48:48,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-07-21 03:48:48,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 28 states have internal predecessors, (31), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-21 03:48:48,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2022-07-21 03:48:48,126 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 19 [2022-07-21 03:48:48,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:48:48,126 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2022-07-21 03:48:48,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 03:48:48,126 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2022-07-21 03:48:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 03:48:48,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:48,127 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:48,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:48:48,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:48,333 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:48,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:48,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2022-07-21 03:48:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:48,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786817290] [2022-07-21 03:48:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:48,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:48,342 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:48:48,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109233890] [2022-07-21 03:48:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:48,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:48,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:48:48,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:48:48,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 03:48:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:48,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:48:48,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:48:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 03:48:48,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:48:48,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:48,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786817290] [2022-07-21 03:48:48,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:48:48,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109233890] [2022-07-21 03:48:48,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109233890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:48:48,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:48:48,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:48:48,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027142989] [2022-07-21 03:48:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:48:48,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:48:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:48,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:48:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:48:48,468 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 03:48:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:48:48,522 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2022-07-21 03:48:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:48:48,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-07-21 03:48:48,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:48:48,527 INFO L225 Difference]: With dead ends: 57 [2022-07-21 03:48:48,527 INFO L226 Difference]: Without dead ends: 50 [2022-07-21 03:48:48,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:48:48,530 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:48:48,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:48:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-21 03:48:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2022-07-21 03:48:48,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-21 03:48:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2022-07-21 03:48:48,544 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 26 [2022-07-21 03:48:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:48:48,544 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2022-07-21 03:48:48,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 03:48:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2022-07-21 03:48:48,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-21 03:48:48,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:48,545 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:48,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 03:48:48,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:48,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:48,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash -979933353, now seen corresponding path program 1 times [2022-07-21 03:48:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:48,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776140112] [2022-07-21 03:48:48,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:48,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:48,764 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:48:48,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439127111] [2022-07-21 03:48:48,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:48,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:48,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:48:48,766 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:48:48,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 03:48:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:48,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 03:48:48,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:48:48,875 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 03:48:48,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:48:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 03:48:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776140112] [2022-07-21 03:48:48,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:48:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439127111] [2022-07-21 03:48:48,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439127111] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 03:48:48,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 03:48:48,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-07-21 03:48:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758679887] [2022-07-21 03:48:48,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:48:48,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:48:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:48:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 03:48:48,947 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 03:48:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:48:49,159 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2022-07-21 03:48:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:48:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-07-21 03:48:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:48:49,161 INFO L225 Difference]: With dead ends: 61 [2022-07-21 03:48:49,161 INFO L226 Difference]: Without dead ends: 59 [2022-07-21 03:48:49,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 03:48:49,162 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 8 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 03:48:49,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 80 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 03:48:49,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-21 03:48:49,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2022-07-21 03:48:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 37 states have internal predecessors, (40), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-21 03:48:49,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2022-07-21 03:48:49,169 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 36 [2022-07-21 03:48:49,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:48:49,175 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2022-07-21 03:48:49,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 03:48:49,176 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2022-07-21 03:48:49,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 03:48:49,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:48:49,178 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:48:49,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:48:49,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:49,379 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:48:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:48:49,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2022-07-21 03:48:49,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:48:49,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026139015] [2022-07-21 03:48:49,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:49,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:48:49,387 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:48:49,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819074755] [2022-07-21 03:48:49,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:48:49,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:48:49,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:48:49,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:48:49,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 03:48:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:48:49,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-21 03:48:49,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:48:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 03:48:49,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:48:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-21 03:48:50,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:48:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026139015] [2022-07-21 03:48:50,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:48:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819074755] [2022-07-21 03:48:50,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819074755] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:48:50,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:48:50,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-07-21 03:48:50,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287354299] [2022-07-21 03:48:50,288 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:48:50,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 03:48:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:48:50,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 03:48:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 03:48:50,289 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 03:48:57,829 WARN L233 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 54 DAG size of output: 52 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-21 03:49:00,087 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:49:02,143 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-21 03:49:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:49:02,449 INFO L93 Difference]: Finished difference Result 146 states and 202 transitions. [2022-07-21 03:49:02,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 03:49:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 56 [2022-07-21 03:49:02,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:49:02,451 INFO L225 Difference]: With dead ends: 146 [2022-07-21 03:49:02,451 INFO L226 Difference]: Without dead ends: 117 [2022-07-21 03:49:02,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 99 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:49:02,452 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 34 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 68 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 03:49:02,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 138 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 319 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-07-21 03:49:02,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-21 03:49:02,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 105. [2022-07-21 03:49:02,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 1.234375) internal successors, (79), 68 states have internal predecessors, (79), 30 states have call successors, (30), 10 states have call predecessors, (30), 10 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-21 03:49:02,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 138 transitions. [2022-07-21 03:49:02,464 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 138 transitions. Word has length 56 [2022-07-21 03:49:02,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:49:02,465 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 138 transitions. [2022-07-21 03:49:02,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 states have internal predecessors, (27), 6 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-21 03:49:02,465 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 138 transitions. [2022-07-21 03:49:02,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-21 03:49:02,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:49:02,467 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:49:02,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 03:49:02,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:02,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:49:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:49:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2022-07-21 03:49:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:49:02,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144895796] [2022-07-21 03:49:02,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:02,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:49:02,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:49:02,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525852327] [2022-07-21 03:49:02,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:02,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:02,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:49:02,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:49:02,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 03:49:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:49:02,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-21 03:49:02,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:49:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-21 03:49:03,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:49:03,180 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 68 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-21 03:49:03,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:49:03,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144895796] [2022-07-21 03:49:03,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:49:03,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525852327] [2022-07-21 03:49:03,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525852327] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:49:03,180 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:49:03,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2022-07-21 03:49:03,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420415197] [2022-07-21 03:49:03,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:49:03,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 03:49:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:49:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 03:49:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-21 03:49:03,184 INFO L87 Difference]: Start difference. First operand 105 states and 138 transitions. Second operand has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 8 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-21 03:49:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:49:03,588 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2022-07-21 03:49:03,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 03:49:03,589 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 8 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) Word has length 67 [2022-07-21 03:49:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:49:03,589 INFO L225 Difference]: With dead ends: 161 [2022-07-21 03:49:03,590 INFO L226 Difference]: Without dead ends: 107 [2022-07-21 03:49:03,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-07-21 03:49:03,591 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 03:49:03,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 129 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 03:49:03,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-21 03:49:03,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 93. [2022-07-21 03:49:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 61 states have internal predecessors, (68), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 03:49:03,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2022-07-21 03:49:03,605 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 67 [2022-07-21 03:49:03,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:49:03,606 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2022-07-21 03:49:03,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 8 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 7 states have call predecessors, (17), 6 states have call successors, (17) [2022-07-21 03:49:03,606 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2022-07-21 03:49:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-21 03:49:03,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:49:03,612 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:49:03,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 03:49:03,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:03,823 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:49:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:49:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1842513023, now seen corresponding path program 1 times [2022-07-21 03:49:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:49:03,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037893275] [2022-07-21 03:49:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:03,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:49:03,830 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:49:03,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [966870768] [2022-07-21 03:49:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:03,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:03,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:49:03,831 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:49:03,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 03:49:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:49:03,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 03:49:03,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:49:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2022-07-21 03:49:03,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:49:03,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:49:03,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037893275] [2022-07-21 03:49:03,952 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:49:03,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966870768] [2022-07-21 03:49:03,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966870768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:49:03,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:49:03,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:49:03,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846486308] [2022-07-21 03:49:03,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:49:03,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:49:03,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:49:03,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:49:03,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:49:03,954 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 03:49:03,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:49:03,996 INFO L93 Difference]: Finished difference Result 107 states and 128 transitions. [2022-07-21 03:49:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:49:03,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 76 [2022-07-21 03:49:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:49:03,997 INFO L225 Difference]: With dead ends: 107 [2022-07-21 03:49:03,997 INFO L226 Difference]: Without dead ends: 95 [2022-07-21 03:49:03,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:49:03,998 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:49:03,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 83 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:49:03,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-21 03:49:04,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-07-21 03:49:04,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 60 states have (on average 1.15) internal successors, (69), 61 states have internal predecessors, (69), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-21 03:49:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2022-07-21 03:49:04,007 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 76 [2022-07-21 03:49:04,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:49:04,008 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2022-07-21 03:49:04,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-21 03:49:04,008 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2022-07-21 03:49:04,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 03:49:04,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:49:04,009 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:49:04,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 03:49:04,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:04,226 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:49:04,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:49:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2022-07-21 03:49:04,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:49:04,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893917445] [2022-07-21 03:49:04,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:04,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:49:04,233 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:49:04,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787593767] [2022-07-21 03:49:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:04,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:04,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:49:04,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:49:04,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 03:49:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:49:04,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 03:49:04,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:49:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-07-21 03:49:04,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:49:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:49:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893917445] [2022-07-21 03:49:04,386 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:49:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787593767] [2022-07-21 03:49:04,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787593767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:49:04,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:49:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 03:49:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160152321] [2022-07-21 03:49:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:49:04,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 03:49:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:49:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 03:49:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:49:04,388 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 03:49:04,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:49:04,469 INFO L93 Difference]: Finished difference Result 131 states and 159 transitions. [2022-07-21 03:49:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 03:49:04,470 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-07-21 03:49:04,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:49:04,470 INFO L225 Difference]: With dead ends: 131 [2022-07-21 03:49:04,470 INFO L226 Difference]: Without dead ends: 97 [2022-07-21 03:49:04,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 03:49:04,471 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:49:04,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:49:04,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-07-21 03:49:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2022-07-21 03:49:04,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-21 03:49:04,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 98 transitions. [2022-07-21 03:49:04,479 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 98 transitions. Word has length 86 [2022-07-21 03:49:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:49:04,480 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 98 transitions. [2022-07-21 03:49:04,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 03:49:04,480 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 98 transitions. [2022-07-21 03:49:04,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 03:49:04,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:49:04,481 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:49:04,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 03:49:04,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:04,702 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:49:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:49:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2022-07-21 03:49:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:49:04,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714981171] [2022-07-21 03:49:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:04,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:49:04,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:49:04,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328839267] [2022-07-21 03:49:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 03:49:04,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:49:04,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:49:04,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 03:49:04,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 03:49:04,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:49:04,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 03:49:04,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:49:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-07-21 03:49:04,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:49:05,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:49:05,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714981171] [2022-07-21 03:49:05,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:49:05,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328839267] [2022-07-21 03:49:05,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328839267] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 03:49:05,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-21 03:49:05,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-07-21 03:49:05,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287195582] [2022-07-21 03:49:05,310 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-21 03:49:05,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 03:49:05,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:49:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 03:49:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-21 03:49:05,311 INFO L87 Difference]: Start difference. First operand 86 states and 98 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 03:49:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:49:05,538 INFO L93 Difference]: Finished difference Result 149 states and 176 transitions. [2022-07-21 03:49:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 03:49:05,539 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-07-21 03:49:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:49:05,544 INFO L225 Difference]: With dead ends: 149 [2022-07-21 03:49:05,544 INFO L226 Difference]: Without dead ends: 93 [2022-07-21 03:49:05,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-07-21 03:49:05,545 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 43 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 03:49:05,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 153 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 03:49:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-07-21 03:49:05,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2022-07-21 03:49:05,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 56 states have (on average 1.0892857142857142) internal successors, (61), 57 states have internal predecessors, (61), 19 states have call successors, (19), 11 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-21 03:49:05,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 98 transitions. [2022-07-21 03:49:05,552 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 98 transitions. Word has length 86 [2022-07-21 03:49:05,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:49:05,553 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 98 transitions. [2022-07-21 03:49:05,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-21 03:49:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 98 transitions. [2022-07-21 03:49:05,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-21 03:49:05,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:49:05,554 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:49:05,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-21 03:49:05,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 03:49:05,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:49:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:49:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1373298297, now seen corresponding path program 2 times [2022-07-21 03:49:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:49:05,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759163171] [2022-07-21 03:49:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:49:05,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:49:05,776 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:49:05,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697261667] [2022-07-21 03:49:05,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 03:49:05,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:05,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:49:05,778 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 03:49:05,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 03:49:05,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 03:49:05,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 03:49:05,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-21 03:49:05,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:49:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 03:49:05,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:49:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 28 proven. 26 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 03:49:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:49:33,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759163171] [2022-07-21 03:49:33,058 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:49:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697261667] [2022-07-21 03:49:33,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697261667] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:49:33,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:49:33,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 17 [2022-07-21 03:49:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491193275] [2022-07-21 03:49:33,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:49:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 03:49:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:49:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 03:49:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-21 03:49:33,062 INFO L87 Difference]: Start difference. First operand 87 states and 98 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 9 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-07-21 03:49:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:49:33,752 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-07-21 03:49:33,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 03:49:33,753 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 9 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) Word has length 91 [2022-07-21 03:49:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:49:33,753 INFO L225 Difference]: With dead ends: 109 [2022-07-21 03:49:33,753 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 03:49:33,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-21 03:49:33,754 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 27 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 03:49:33,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 182 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 03:49:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 03:49:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 03:49:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:49:33,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 03:49:33,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 91 [2022-07-21 03:49:33,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:49:33,755 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 03:49:33,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 9 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (28), 9 states have call predecessors, (28), 9 states have call successors, (28) [2022-07-21 03:49:33,755 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 03:49:33,755 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 03:49:33,757 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:49:33,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 03:49:33,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:49:33,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 03:49:35,775 INFO L902 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2022-07-21 03:49:35,775 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2022-07-21 03:49:35,775 INFO L899 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2022-07-21 03:49:35,775 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L895 garLoopResultBuilder]: At program point L44-1(lines 44 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) (= |ULTIMATE.start_main_~A~0#1| (+ (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|)) .cse0 .cse1 .cse2) (and .cse0 .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) .cse2) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) .cse0 .cse1 (<= 0 |ULTIMATE.start_main_~r~0#1|) (<= |ULTIMATE.start_main_~A~0#1| 2) (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse2 (<= 0 |ULTIMATE.start_main_~A~0#1|)))) [2022-07-21 03:49:35,776 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse7 (div |ULTIMATE.start_main_~p~0#1| 2)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 (<= 1 (div .cse7 2)) (= (+ (* |ULTIMATE.start_main_~B~0#1| .cse7) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse8 |ULTIMATE.start_main_~A~0#1|)) .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse8 |ULTIMATE.start_main_~r~0#1|))))) [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse13 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse16 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse4 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse13 .cse16 |ULTIMATE.start_main_~r~0#1|))) (.cse5 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse3 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse12 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse8 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse11 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse6 (= .cse16 |ULTIMATE.start_main_~d~0#1|)) (.cse7 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2) (and .cse3 .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 .cse2) (and .cse5 .cse6 .cse4 .cse7 .cse2) (let ((.cse9 (* 2 |ULTIMATE.start_main_~B~0#1|)) (.cse10 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse8 .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse9) (<= .cse10 2) .cse5 (<= .cse9 .cse10) .cse11 .cse12 (= 2 |ULTIMATE.start_main_~d~0#1|))) (and .cse8 (= |ULTIMATE.start_main_~A~0#1| (+ .cse13 |ULTIMATE.start_main_~r~0#1|)) .cse3 .cse1 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse11 .cse2 .cse12) (let ((.cse14 (div |ULTIMATE.start_main_~p~0#1| 2)) (.cse15 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse8 .cse11 .cse6 (<= 1 (div .cse14 2)) (= (+ (* |ULTIMATE.start_main_~B~0#1| .cse14) .cse13 |ULTIMATE.start_main_~r~0#1|) (+ .cse15 |ULTIMATE.start_main_~A~0#1|)) .cse7 .cse2 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse15 |ULTIMATE.start_main_~r~0#1|)))))) [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L895 garLoopResultBuilder]: At program point L45-1(line 45) the Hoare annotation is: (let ((.cse12 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse15 (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|))) (let ((.cse0 (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ .cse12 .cse15 |ULTIMATE.start_main_~r~0#1|))) (.cse5 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse9 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse8 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse7 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse3 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse6 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse10 (= .cse15 |ULTIMATE.start_main_~d~0#1|)) (.cse11 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2) (let ((.cse4 (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|))) (and .cse3 .cse0 (<= .cse4 2) .cse5 (<= (* 2 |ULTIMATE.start_main_~B~0#1|) .cse4) .cse6 .cse2 .cse7 (= 2 |ULTIMATE.start_main_~d~0#1|))) (and .cse8 .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) .cse9 .cse2) (and .cse5 .cse10 .cse9 .cse11 .cse2) (and .cse3 (= |ULTIMATE.start_main_~A~0#1| (+ .cse12 |ULTIMATE.start_main_~r~0#1|)) .cse8 .cse1 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse6 .cse2 .cse7) (let ((.cse13 (div |ULTIMATE.start_main_~p~0#1| 2)) (.cse14 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse3 .cse6 .cse10 (<= 1 (div .cse13 2)) (= (+ (* |ULTIMATE.start_main_~B~0#1| .cse13) .cse12 |ULTIMATE.start_main_~r~0#1|) (+ .cse14 |ULTIMATE.start_main_~A~0#1|)) .cse11 .cse2 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse14 |ULTIMATE.start_main_~r~0#1|)))))) [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point L37(lines 34 42) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (= |ULTIMATE.start_main_~B~0#1| 1)) [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point L46(lines 44 56) no Hoare annotation was computed. [2022-07-21 03:49:35,776 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse7 (div |ULTIMATE.start_main_~p~0#1| 2)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 (<= 1 (div .cse7 2)) (= (+ (* |ULTIMATE.start_main_~B~0#1| .cse7) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse8 |ULTIMATE.start_main_~A~0#1|)) .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse8 |ULTIMATE.start_main_~r~0#1|))))) [2022-07-21 03:49:35,776 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2022-07-21 03:49:35,777 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse7 (div |ULTIMATE.start_main_~p~0#1| 2)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 (<= 1 (div .cse7 2)) (= (+ (* |ULTIMATE.start_main_~B~0#1| .cse7) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse8 |ULTIMATE.start_main_~A~0#1|)) .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse8 |ULTIMATE.start_main_~r~0#1|))))) [2022-07-21 03:49:35,777 INFO L895 garLoopResultBuilder]: At program point L35-1(line 35) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse6 (<= 0 |ULTIMATE.start_main_~A~0#1|)) (.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 2)) (.cse2 (= (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~p~0#1|) |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= (+ (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (= 2 |ULTIMATE.start_main_~d~0#1|)) (let ((.cse7 (div |ULTIMATE.start_main_~p~0#1| 2)) (.cse8 (div |ULTIMATE.start_main_~d~0#1| 2))) (and .cse0 .cse1 .cse2 (<= 1 (div .cse7 2)) (= (+ (* |ULTIMATE.start_main_~B~0#1| .cse7) (* |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) (+ .cse8 |ULTIMATE.start_main_~A~0#1|)) .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (<= .cse8 |ULTIMATE.start_main_~r~0#1|))))) [2022-07-21 03:49:35,777 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-21 03:49:35,777 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-21 03:49:35,777 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-21 03:49:35,777 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-21 03:49:35,777 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-21 03:49:35,777 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-21 03:49:35,779 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:49:35,780 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:49:35,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:49:35 BoogieIcfgContainer [2022-07-21 03:49:35,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:49:35,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:49:35,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:49:35,804 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:49:35,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:48:47" (3/4) ... [2022-07-21 03:49:35,806 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 03:49:35,810 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 03:49:35,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-21 03:49:35,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 03:49:35,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 03:49:35,815 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 03:49:35,843 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:49:35,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:49:35,843 INFO L158 Benchmark]: Toolchain (without parser) took 49130.44ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 37.8MB in the beginning and 60.2MB in the end (delta: -22.4MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2022-07-21 03:49:35,844 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:49:35,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.01ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 42.9MB in the end (delta: -5.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 03:49:35,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.52ms. Allocated memory is still 58.7MB. Free memory was 42.7MB in the beginning and 41.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:49:35,844 INFO L158 Benchmark]: Boogie Preprocessor took 28.63ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 40.2MB in the end (delta: 978.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:49:35,845 INFO L158 Benchmark]: RCFGBuilder took 237.00ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 30.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 03:49:35,845 INFO L158 Benchmark]: TraceAbstraction took 48602.91ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 30.1MB in the beginning and 63.3MB in the end (delta: -33.2MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-07-21 03:49:35,845 INFO L158 Benchmark]: Witness Printer took 39.50ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 60.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:49:35,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory was 40.8MB in the beginning and 40.8MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 193.01ms. Allocated memory is still 58.7MB. Free memory was 37.6MB in the beginning and 42.9MB in the end (delta: -5.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.52ms. Allocated memory is still 58.7MB. Free memory was 42.7MB in the beginning and 41.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.63ms. Allocated memory is still 58.7MB. Free memory was 41.2MB in the beginning and 40.2MB in the end (delta: 978.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 237.00ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 30.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 48602.91ms. Allocated memory was 58.7MB in the beginning and 92.3MB in the end (delta: 33.6MB). Free memory was 30.1MB in the beginning and 63.3MB in the end (delta: -33.2MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 39.50ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 60.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.5s, OverallIterations: 12, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 263 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 1229 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 809 mSDsCounter, 296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1680 IncrementalHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 296 mSolverCounterUnsat, 420 mSDtfsCounter, 1680 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 837 GetRequests, 733 SyntacticMatches, 9 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 12.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=7, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 61 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 99 PreInvPairs, 132 NumberOfFragments, 940 HoareAnnotationTreeSize, 99 FomulaSimplifications, 1130 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 2682 FormulaSimplificationTreeSizeReductionInter, 1.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 29.8s InterpolantComputationTime, 575 NumberOfCodeBlocks, 575 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 809 ConstructedInterpolants, 0 QuantifiedInterpolants, 17024 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1352 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 2584/2687 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && B == d) && A <= 2) && B * p == d) && A == r) && d * q + r == A) && B == 1) && 0 <= A) || (((((((cond == 1 && A <= 2) && B * p == d) && A == r) && d * q + r == A) && B == 1) && 0 <= A) && 2 == d)) || ((((((((cond == 1 && A <= 2) && B * p == d) && 1 <= p / 2 / 2) && B * (p / 2) + B * q + r == d / 2 + A) && d * q + r == A) && B == 1) && d % 2 == 0) && d / 2 <= r) RESULT: Ultimate proved your program to be correct! [2022-07-21 03:49:35,911 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 Writing output log to file Ultimate.log Result: TRUE