./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/egcd-ll_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 e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:04:28,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:04:28,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:04:28,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:04:28,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:04:28,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:04:28,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:04:28,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:04:28,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:04:28,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:04:28,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:04:28,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:04:28,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:04:28,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:04:28,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:04:28,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:04:28,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:04:28,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:04:28,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:04:28,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:04:28,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:04:28,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:04:28,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:04:28,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:04:28,354 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:04:28,355 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:04:28,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:04:28,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:04:28,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:04:28,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:04:28,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:04:28,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:04:28,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:04:28,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:04:28,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:04:28,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:04:28,365 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:04:28,365 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:04:28,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:04:28,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:04:28,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:04:28,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:04:28,403 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:04:28,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:04:28,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:04:28,404 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:04:28,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:04:28,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:04:28,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:04:28,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:04:28,406 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:04:28,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:04:28,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:04:28,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:04:28,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:04:28,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:04:28,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:04:28,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:04:28,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:04:28,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:04:28,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:04:28,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:04:28,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:04:28,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:04:28,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:04:28,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:04:28,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:04:28,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:04:28,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:04:28,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:04:28,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:04:28,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:04:28,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:04:28,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:04:28,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:04:28,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:04:28,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e89b4ab54b22145b4041cfb458aca993f2d791ac86940dcd03d48a90a5273393 [2021-12-14 14:04:28,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:04:28,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:04:28,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:04:28,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:04:28,722 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:04:28,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2021-12-14 14:04:28,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d515e4827/e5902da707f8495eb886a31a9643e0a3/FLAG739e919d0 [2021-12-14 14:04:29,259 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:04:29,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound2.c [2021-12-14 14:04:29,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d515e4827/e5902da707f8495eb886a31a9643e0a3/FLAG739e919d0 [2021-12-14 14:04:29,749 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d515e4827/e5902da707f8495eb886a31a9643e0a3 [2021-12-14 14:04:29,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:04:29,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:04:29,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:04:29,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:04:29,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:04:29,765 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:29" (1/1) ... [2021-12-14 14:04:29,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53acb3cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:29, skipping insertion in model container [2021-12-14 14:04:29,766 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:04:29" (1/1) ... [2021-12-14 14:04:29,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:04:29,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:04:29,933 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/egcd-ll_valuebound2.c[489,502] [2021-12-14 14:04:29,963 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:04:29,977 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:04:29,990 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/egcd-ll_valuebound2.c[489,502] [2021-12-14 14:04:30,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:04:30,013 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:04:30,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30 WrapperNode [2021-12-14 14:04:30,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:04:30,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:04:30,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:04:30,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:04:30,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,049 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-12-14 14:04:30,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:04:30,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:04:30,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:04:30,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:04:30,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:04:30,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:04:30,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:04:30,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:04:30,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (1/1) ... [2021-12-14 14:04:30,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:04:30,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:30,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 14:04:30,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 14:04:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:04:30,148 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 14:04:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 14:04:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:04:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:04:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:04:30,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 14:04:30,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 14:04:30,198 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:04:30,200 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:04:30,355 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:04:30,368 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:04:30,375 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:04:30,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:30 BoogieIcfgContainer [2021-12-14 14:04:30,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:04:30,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:04:30,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:04:30,398 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:04:30,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:04:29" (1/3) ... [2021-12-14 14:04:30,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5690dc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:04:30, skipping insertion in model container [2021-12-14 14:04:30,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:04:30" (2/3) ... [2021-12-14 14:04:30,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5690dc90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:04:30, skipping insertion in model container [2021-12-14 14:04:30,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:30" (3/3) ... [2021-12-14 14:04:30,401 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound2.c [2021-12-14 14:04:30,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:04:30,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:04:30,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:04:30,465 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 14:04:30,465 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:04:30,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-14 14:04:30,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 14:04:30,485 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:30,486 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:30,486 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:30,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2021-12-14 14:04:30,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:30,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309350171] [2021-12-14 14:04:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:30,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 14:04:30,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:30,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 14:04:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-14 14:04:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:30,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-14 14:04:30,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:04:30,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:30,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309350171] [2021-12-14 14:04:30,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309350171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:04:30,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:04:30,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 14:04:30,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521061819] [2021-12-14 14:04:30,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:04:30,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:04:30,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:30,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:04:30,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:04:30,803 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 14:04:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:30,835 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2021-12-14 14:04:30,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:04:30,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-12-14 14:04:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:30,844 INFO L225 Difference]: With dead ends: 61 [2021-12-14 14:04:30,845 INFO L226 Difference]: Without dead ends: 28 [2021-12-14 14:04:30,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:04:30,858 INFO L933 BasicCegarLoop]: 42 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, 42 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 [2021-12-14 14:04:30,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:04:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-14 14:04:30,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-14 14:04:30,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 14:04:30,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-12-14 14:04:30,912 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2021-12-14 14:04:30,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:30,914 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-12-14 14:04:30,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 14:04:30,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-12-14 14:04:30,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 14:04:30,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:30,918 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:30,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 14:04:30,919 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:30,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2021-12-14 14:04:30,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:30,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135522678] [2021-12-14 14:04:30,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:30,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:30,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:30,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115653458] [2021-12-14 14:04:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:30,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:30,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:30,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:30,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:04:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:31,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 14:04:31,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:04:31,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:04:31,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:31,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135522678] [2021-12-14 14:04:31,282 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:31,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115653458] [2021-12-14 14:04:31,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115653458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:04:31,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:04:31,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 14:04:31,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524077875] [2021-12-14 14:04:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:04:31,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:04:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:04:31,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 14:04:31,295 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 14:04:31,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:31,385 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2021-12-14 14:04:31,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:04:31,386 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), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-12-14 14:04:31,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:31,389 INFO L225 Difference]: With dead ends: 44 [2021-12-14 14:04:31,389 INFO L226 Difference]: Without dead ends: 42 [2021-12-14 14:04:31,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:04:31,396 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:31,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 139 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:04:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-14 14:04:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-12-14 14:04:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-14 14:04:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2021-12-14 14:04:31,422 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2021-12-14 14:04:31,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:31,423 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2021-12-14 14:04:31,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-14 14:04:31,423 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2021-12-14 14:04:31,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-14 14:04:31,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:31,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:31,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:31,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:31,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2021-12-14 14:04:31,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:31,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5689074] [2021-12-14 14:04:31,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:31,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:31,658 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:31,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [663647358] [2021-12-14 14:04:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:31,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:31,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:31,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:31,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:04:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:31,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-14 14:04:31,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-14 14:04:32,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:04:32,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:32,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5689074] [2021-12-14 14:04:32,045 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:32,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663647358] [2021-12-14 14:04:32,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663647358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:04:32,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:04:32,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 14:04:32,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001098309] [2021-12-14 14:04:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:04:32,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:04:32,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:04:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:04:32,048 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-14 14:04:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:32,204 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-12-14 14:04:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:04:32,205 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 34 [2021-12-14 14:04:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:32,209 INFO L225 Difference]: With dead ends: 66 [2021-12-14 14:04:32,209 INFO L226 Difference]: Without dead ends: 64 [2021-12-14 14:04:32,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:04:32,213 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:32,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 206 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:04:32,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-14 14:04:32,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-12-14 14:04:32,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-14 14:04:32,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-12-14 14:04:32,228 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2021-12-14 14:04:32,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:32,228 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-12-14 14:04:32,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-14 14:04:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-12-14 14:04:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-14 14:04:32,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:32,230 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:32,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:32,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-14 14:04:32,448 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2021-12-14 14:04:32,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:32,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914217562] [2021-12-14 14:04:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:32,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:32,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:32,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276514491] [2021-12-14 14:04:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:32,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:32,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:32,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:32,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:04:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:32,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-14 14:04:32,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:04:32,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:04:32,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:32,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914217562] [2021-12-14 14:04:32,827 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:32,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276514491] [2021-12-14 14:04:32,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276514491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:04:32,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:04:32,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 14:04:32,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389604666] [2021-12-14 14:04:32,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:04:32,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:04:32,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:32,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:04:32,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:04:32,831 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-14 14:04:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:33,005 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2021-12-14 14:04:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:04:33,005 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2021-12-14 14:04:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:33,006 INFO L225 Difference]: With dead ends: 64 [2021-12-14 14:04:33,006 INFO L226 Difference]: Without dead ends: 60 [2021-12-14 14:04:33,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:04:33,008 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 20 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:33,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 206 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:04:33,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-14 14:04:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-12-14 14:04:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 14:04:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2021-12-14 14:04:33,033 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2021-12-14 14:04:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:33,033 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2021-12-14 14:04:33,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-14 14:04:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2021-12-14 14:04:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-14 14:04:33,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:33,035 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:33,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 14:04:33,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:33,236 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:33,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2021-12-14 14:04:33,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:33,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135093676] [2021-12-14 14:04:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:33,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:33,246 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:33,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808994838] [2021-12-14 14:04:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:33,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:33,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:33,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:33,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:04:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 14:04:33,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-14 14:04:33,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:04:33,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:33,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135093676] [2021-12-14 14:04:33,376 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:33,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808994838] [2021-12-14 14:04:33,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808994838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:04:33,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:04:33,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 14:04:33,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128612244] [2021-12-14 14:04:33,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:04:33,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:04:33,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:04:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 14:04:33,378 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 14:04:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:33,439 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2021-12-14 14:04:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:04:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2021-12-14 14:04:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:33,441 INFO L225 Difference]: With dead ends: 66 [2021-12-14 14:04:33,441 INFO L226 Difference]: Without dead ends: 64 [2021-12-14 14:04:33,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:04:33,442 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:33,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:04:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-12-14 14:04:33,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-12-14 14:04:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 14:04:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2021-12-14 14:04:33,453 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2021-12-14 14:04:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:33,453 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2021-12-14 14:04:33,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 14:04:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2021-12-14 14:04:33,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 14:04:33,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:33,455 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:33,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:33,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:33,671 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:33,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2021-12-14 14:04:33,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:33,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981097115] [2021-12-14 14:04:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:33,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:33,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002018194] [2021-12-14 14:04:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:33,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:33,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:33,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:33,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:04:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:33,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 14:04:33,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-14 14:04:33,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:04:33,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:33,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981097115] [2021-12-14 14:04:33,843 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:33,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002018194] [2021-12-14 14:04:33,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002018194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:04:33,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:04:33,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 14:04:33,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373856742] [2021-12-14 14:04:33,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:04:33,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:04:33,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:04:33,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 14:04:33,845 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 14:04:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:33,891 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2021-12-14 14:04:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:04:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2021-12-14 14:04:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:33,894 INFO L225 Difference]: With dead ends: 80 [2021-12-14 14:04:33,894 INFO L226 Difference]: Without dead ends: 78 [2021-12-14 14:04:33,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:04:33,895 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:33,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:04:33,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-14 14:04:33,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-12-14 14:04:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-12-14 14:04:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-12-14 14:04:33,907 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2021-12-14 14:04:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:33,908 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-12-14 14:04:33,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 14:04:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-12-14 14:04:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 14:04:33,910 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:33,910 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:33,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-14 14:04:34,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:34,132 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2021-12-14 14:04:34,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:34,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469815754] [2021-12-14 14:04:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:34,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:34,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203409922] [2021-12-14 14:04:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:34,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:34,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:34,145 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:34,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:04:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:34,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 14:04:34,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:34,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-14 14:04:34,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:04:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-14 14:04:34,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:34,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469815754] [2021-12-14 14:04:34,513 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:34,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203409922] [2021-12-14 14:04:34,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203409922] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:04:34,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 14:04:34,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-12-14 14:04:34,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294019021] [2021-12-14 14:04:34,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 14:04:34,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:04:34,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:04:34,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 14:04:34,515 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 14:04:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:34,650 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2021-12-14 14:04:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 14:04:34,651 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2021-12-14 14:04:34,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:34,652 INFO L225 Difference]: With dead ends: 84 [2021-12-14 14:04:34,652 INFO L226 Difference]: Without dead ends: 80 [2021-12-14 14:04:34,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:04:34,654 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:34,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 151 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:04:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-14 14:04:34,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-12-14 14:04:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-14 14:04:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2021-12-14 14:04:34,669 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2021-12-14 14:04:34,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:34,672 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2021-12-14 14:04:34,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-14 14:04:34,673 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2021-12-14 14:04:34,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 14:04:34,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:34,678 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:34,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:34,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:34,892 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2021-12-14 14:04:34,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912091494] [2021-12-14 14:04:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:34,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:34,908 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:34,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1341444625] [2021-12-14 14:04:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:34,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:34,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:34,911 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:34,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 14:04:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:34,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-14 14:04:34,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:35,326 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-14 14:04:35,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:04:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-14 14:04:35,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:35,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912091494] [2021-12-14 14:04:35,580 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:35,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341444625] [2021-12-14 14:04:35,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341444625] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:04:35,580 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 14:04:35,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 16 [2021-12-14 14:04:35,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746207203] [2021-12-14 14:04:35,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 14:04:35,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 14:04:35,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:35,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 14:04:35,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:04:35,582 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-14 14:04:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:36,204 INFO L93 Difference]: Finished difference Result 115 states and 149 transitions. [2021-12-14 14:04:36,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 14:04:36,205 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) Word has length 52 [2021-12-14 14:04:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:36,207 INFO L225 Difference]: With dead ends: 115 [2021-12-14 14:04:36,207 INFO L226 Difference]: Without dead ends: 113 [2021-12-14 14:04:36,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-12-14 14:04:36,208 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:36,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 175 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 14:04:36,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-14 14:04:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2021-12-14 14:04:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 57 states have internal predecessors, (61), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-14 14:04:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 110 transitions. [2021-12-14 14:04:36,222 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 110 transitions. Word has length 52 [2021-12-14 14:04:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:36,223 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 110 transitions. [2021-12-14 14:04:36,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 14 states have internal predecessors, (31), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-14 14:04:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 110 transitions. [2021-12-14 14:04:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 14:04:36,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:36,225 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:36,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:36,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:36,449 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1226126935, now seen corresponding path program 2 times [2021-12-14 14:04:36,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:36,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087811232] [2021-12-14 14:04:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:36,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:36,458 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:36,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216756831] [2021-12-14 14:04:36,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 14:04:36,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:36,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:36,460 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:36,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 14:04:36,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 14:04:36,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:04:36,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 14:04:36,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-14 14:04:36,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:04:36,809 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-14 14:04:36,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:36,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087811232] [2021-12-14 14:04:36,811 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:36,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216756831] [2021-12-14 14:04:36,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216756831] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:04:36,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 14:04:36,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-12-14 14:04:36,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155894800] [2021-12-14 14:04:36,814 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 14:04:36,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:04:36,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:04:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:04:36,817 INFO L87 Difference]: Start difference. First operand 92 states and 110 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-14 14:04:38,108 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-14 14:04:38,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:38,187 INFO L93 Difference]: Finished difference Result 117 states and 150 transitions. [2021-12-14 14:04:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:04:38,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 57 [2021-12-14 14:04:38,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:38,189 INFO L225 Difference]: With dead ends: 117 [2021-12-14 14:04:38,189 INFO L226 Difference]: Without dead ends: 107 [2021-12-14 14:04:38,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:04:38,190 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:38,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 202 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-14 14:04:38,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-14 14:04:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 92. [2021-12-14 14:04:38,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 57 states have (on average 1.105263157894737) internal successors, (63), 59 states have internal predecessors, (63), 21 states have call successors, (21), 13 states have call predecessors, (21), 13 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-12-14 14:04:38,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2021-12-14 14:04:38,209 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 57 [2021-12-14 14:04:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:38,210 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2021-12-14 14:04:38,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-14 14:04:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2021-12-14 14:04:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 14:04:38,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:38,212 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:38,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-14 14:04:38,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-14 14:04:38,428 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:38,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:38,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2021-12-14 14:04:38,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:38,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789536036] [2021-12-14 14:04:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:38,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:38,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:38,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153611396] [2021-12-14 14:04:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:38,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:38,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:38,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:38,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 14:04:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:04:38,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 14:04:38,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:38,667 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-14 14:04:38,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:04:38,867 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-14 14:04:38,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:38,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789536036] [2021-12-14 14:04:38,867 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:38,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153611396] [2021-12-14 14:04:38,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153611396] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:04:38,868 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 14:04:38,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-12-14 14:04:38,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901941837] [2021-12-14 14:04:38,868 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 14:04:38,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:04:38,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:38,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:04:38,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:04:38,870 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-14 14:04:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:38,995 INFO L93 Difference]: Finished difference Result 123 states and 137 transitions. [2021-12-14 14:04:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:04:38,995 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) Word has length 65 [2021-12-14 14:04:38,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:38,996 INFO L225 Difference]: With dead ends: 123 [2021-12-14 14:04:38,996 INFO L226 Difference]: Without dead ends: 71 [2021-12-14 14:04:38,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:04:38,997 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:38,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 199 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:04:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-14 14:04:39,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-12-14 14:04:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 45 states have internal predecessors, (47), 16 states have call successors, (16), 10 states have call predecessors, (16), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-14 14:04:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2021-12-14 14:04:39,005 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 65 [2021-12-14 14:04:39,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:39,006 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2021-12-14 14:04:39,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 5 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-14 14:04:39,006 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2021-12-14 14:04:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 14:04:39,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:04:39,007 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:39,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:39,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 14:04:39,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:04:39,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:04:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1045444891, now seen corresponding path program 2 times [2021-12-14 14:04:39,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:04:39,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526695955] [2021-12-14 14:04:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:04:39,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:04:39,241 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:04:39,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402099209] [2021-12-14 14:04:39,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 14:04:39,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:04:39,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:04:39,243 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:04:39,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 14:04:39,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 14:04:39,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:04:39,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 14:04:39,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:04:39,473 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-14 14:04:39,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:04:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-14 14:04:39,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:04:39,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526695955] [2021-12-14 14:04:39,668 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:04:39,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402099209] [2021-12-14 14:04:39,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402099209] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:04:39,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 14:04:39,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-12-14 14:04:39,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439964368] [2021-12-14 14:04:39,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 14:04:39,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:04:39,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:04:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:04:39,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:04:39,670 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-14 14:04:39,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:04:39,783 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2021-12-14 14:04:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:04:39,784 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 65 [2021-12-14 14:04:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:04:39,785 INFO L225 Difference]: With dead ends: 75 [2021-12-14 14:04:39,785 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 14:04:39,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:04:39,786 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 10 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:04:39,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 151 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:04:39,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 14:04:39,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 14:04:39,787 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) [2021-12-14 14:04:39,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 14:04:39,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2021-12-14 14:04:39,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:04:39,788 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 14:04:39,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 7 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-14 14:04:39,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 14:04:39,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 14:04:39,791 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 14:04:39,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 14:04:40,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 14:04:40,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 14:04:42,290 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse5 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| .cse5)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| .cse5)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3 .cse4) (and .cse0 (<= |ULTIMATE.start_main_~y~0#1| 2) (= (+ |ULTIMATE.start_main_~q~0#1| 1) 0) (= |ULTIMATE.start_main_~r~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse4)))) [2021-12-14 14:04:42,290 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 14:04:42,290 INFO L861 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-12-14 14:04:42,291 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-14 14:04:42,291 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~s~0#1| 1)) (let ((.cse4 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) .cse2 (= |ULTIMATE.start_main_~b~0#1| .cse4) .cse3 (= |ULTIMATE.start_main_~a~0#1| .cse4))))) [2021-12-14 14:04:42,291 INFO L854 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse5 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| .cse5)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| .cse5)) (.cse4 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3 .cse4) (and .cse0 (<= |ULTIMATE.start_main_~y~0#1| 2) (= (+ |ULTIMATE.start_main_~q~0#1| 1) 0) (= |ULTIMATE.start_main_~r~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse4)))) [2021-12-14 14:04:42,291 INFO L858 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2021-12-14 14:04:42,291 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse4 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (< 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse0 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) .cse4 .cse5) (and .cse0 .cse6 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse1 .cse7 .cse2 .cse3 .cse8 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (< |ULTIMATE.start_main_~b~0#1| 2) .cse6 .cse7 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse2 .cse8 .cse4 .cse5))) [2021-12-14 14:04:42,291 INFO L854 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse4 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (< 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse0 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) .cse4 .cse5) (and .cse0 .cse6 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse1 .cse7 .cse2 .cse3 .cse8 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (< |ULTIMATE.start_main_~b~0#1| 2) .cse6 .cse7 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse2 .cse8 .cse4 .cse5))) [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2021-12-14 14:04:42,292 INFO L854 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-14 14:04:42,292 INFO L854 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2021-12-14 14:04:42,292 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and .cse0 .cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 (<= |ULTIMATE.start_main_~x~0#1| 2) .cse3) (let ((.cse4 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and .cse0 .cse1 (= (+ |ULTIMATE.start_main_~q~0#1| 1) 0) (= |ULTIMATE.start_main_~r~0#1| 0) .cse2 (= |ULTIMATE.start_main_~b~0#1| .cse4) (= |ULTIMATE.start_main_~a~0#1| .cse4) (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) .cse3)))) [2021-12-14 14:04:42,292 INFO L861 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-12-14 14:04:42,292 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-12-14 14:04:42,293 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse4 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse5 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (< 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse0 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) .cse4 .cse5) (and .cse0 .cse6 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse1 .cse7 .cse2 .cse3 .cse8 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (< |ULTIMATE.start_main_~b~0#1| 2) .cse6 .cse7 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse2 .cse8 .cse4 .cse5))) [2021-12-14 14:04:42,293 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse1 (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|)))) (.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse8 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse5 (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (.cse6 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (< 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) .cse0 .cse1 .cse2 .cse3 .cse4 (< |ULTIMATE.start_main_~a~0#1| 2) .cse5 .cse6) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~b~0#1| 2) .cse2 .cse7 .cse3 .cse4 .cse8 .cse5 .cse6) (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 (< |ULTIMATE.start_main_~b~0#1| 2) .cse1 .cse7 (< 0 |ULTIMATE.start_main_~a~0#1|) .cse3 .cse8 .cse5 .cse6))) [2021-12-14 14:04:42,293 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-12-14 14:04:42,293 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-12-14 14:04:42,293 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2021-12-14 14:04:42,293 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-12-14 14:04:42,293 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2021-12-14 14:04:42,294 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-12-14 14:04:42,294 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-12-14 14:04:42,294 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2021-12-14 14:04:42,294 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2021-12-14 14:04:42,294 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-14 14:04:42,296 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:04:42,297 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 14:04:42,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:04:42 BoogieIcfgContainer [2021-12-14 14:04:42,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 14:04:42,311 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 14:04:42,311 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 14:04:42,312 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 14:04:42,312 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:04:30" (3/4) ... [2021-12-14 14:04:42,314 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 14:04:42,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-14 14:04:42,318 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-14 14:04:42,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-14 14:04:42,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-14 14:04:42,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 14:04:42,322 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 14:04:42,352 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 14:04:42,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 14:04:42,353 INFO L158 Benchmark]: Toolchain (without parser) took 12599.01ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 72.0MB in the beginning and 75.7MB in the end (delta: -3.7MB). Peak memory consumption was 16.9MB. Max. memory is 16.1GB. [2021-12-14 14:04:42,353 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 56.4MB in the end (delta: 26.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:04:42,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.52ms. Allocated memory is still 102.8MB. Free memory was 72.0MB in the beginning and 79.6MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 14:04:42,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.60ms. Allocated memory is still 102.8MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:04:42,354 INFO L158 Benchmark]: Boogie Preprocessor took 29.19ms. Allocated memory is still 102.8MB. Free memory was 78.0MB in the beginning and 77.0MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 14:04:42,354 INFO L158 Benchmark]: RCFGBuilder took 297.56ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 67.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 14:04:42,355 INFO L158 Benchmark]: TraceAbstraction took 11931.98ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 78.8MB in the end (delta: -12.4MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2021-12-14 14:04:42,355 INFO L158 Benchmark]: Witness Printer took 41.31ms. Allocated memory is still 123.7MB. Free memory was 78.8MB in the beginning and 75.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:04:42,356 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 83.9MB. Free memory was 56.4MB in the beginning and 56.4MB in the end (delta: 26.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.52ms. Allocated memory is still 102.8MB. Free memory was 72.0MB in the beginning and 79.6MB in the end (delta: -7.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.60ms. Allocated memory is still 102.8MB. Free memory was 79.6MB in the beginning and 78.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.19ms. Allocated memory is still 102.8MB. Free memory was 78.0MB in the beginning and 77.0MB in the end (delta: 1.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 297.56ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 67.0MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11931.98ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 66.5MB in the beginning and 78.8MB in the end (delta: -12.4MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. * Witness Printer took 41.31ms. Allocated memory is still 123.7MB. Free memory was 78.8MB in the beginning and 75.7MB 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: 13]: 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 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.8s, OverallIterations: 11, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 208 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 165 mSDsluCounter, 1741 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1366 mSDsCounter, 199 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1044 IncrementalHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 199 mSolverCounterUnsat, 375 mSDtfsCounter, 1044 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 796 GetRequests, 687 SyntacticMatches, 6 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=8, InterpolantAutomatonStates: 87, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 47 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 62 PreInvPairs, 90 NumberOfFragments, 818 HoareAnnotationTreeSize, 62 FomulaSimplifications, 243 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2926 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 512 NumberOfCodeBlocks, 512 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 2368 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1263 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 909/1002 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: 35]: Loop Invariant Derived loop invariant: ((((((((((0 < b && y <= 2) && 1 <= y) && b == x * q + y * s) && r == 0) && 1 <= x) && a == x) && a < 2) && a == x * p + y * r) && s == 1) || (((((((((1 <= y && b == y) && b <= 2) && r == 0) && q == 0) && 1 <= x) && a == x) && x <= 2) && a == x * p + y * r) && s == 1)) || (((((((((p == 1 && 1 <= y) && b < 2) && b == y) && q == 0) && 0 < a) && 1 <= x) && x <= 2) && a == x * p + y * r) && s == 1) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-14 14:04:42,376 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